Java for intermediate users

Java for Intermediate Users
Prepare for advanced Java

Build on programming basics, by using
the world’s most popular language to:
• Maintain your advantage
• Refine your skills
• Write functional code
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Marius Claassen,
Java Intermediate

About me
Marius Claassen, Java Developer and Teacher
I am a self-taught Java developer. Having been a teacher for many
years, I am now working full-time as an independent Java instructor,
making video tutorials. It is my mission to help others learn
programming in general and Java in particular.
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Marius Claassen,
Java Intermediate

Benefits
• Read Java code
• Develop useful Java applications
• Devise Java solutions when given a
problem statement
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Marius Claassen,
Java Intermediate

Major components
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
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Marius Claassen,
Java Intermediate

Lecture outline
• 51 Lectures
• 5 minutes
1. Coding exercise
2. Lecture description
3. PDF
4. Video
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Marius Claassen,
Java Intermediate

Ideal student
* Completed Java beginner course
* You want to improve your skills by:
• watching live coding
• doing coding exercises
• checking answers against solutions
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Marius Claassen,
Java Intermediate

Enrolment
30-day money back guarantee
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Marius Claassen,
Java Intermediate

To buy this course:
• mariusclaassen@gmail.com
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Marius Claassen,
Java Intermediate

TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
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Marius Claassen,
Java Intermediate

Lecture 2: Development tools
• JDK (SE 8 or SE 9)
http://www.oracle.com/technetwork/java/javase/downloads/index.html
• IDE (IntelliJ IDEA)
https://www.jetbrains.com/idea/
• Internet browser (Google Chrome)
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Java Intermediate

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Java Intermediate

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Java Intermediate

TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
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Java Intermediate

Lecture 3: Numeric types example
Numeric types problem statement:
Print the numeric data types int and float with
their names and values
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Java Intermediate

Lecture 3: Numeric types example
public class Lecture3 {
public static void main(String[] args) {
int intNumber = 308_000;
float floatNumber = 9_000f;
System.out.print(“intNumber: ” + intNumber);
System.out.print(“tfloatNumber: ” + floatNumber);
}
} // intNumber: 308000 floatNumber: 9000.0
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Java Intermediate

Lecture 3: Numeric types exercise
Print the numeric data type long initialized as
6 000 000
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Marius Claassen,
Java Intermediate

Lecture 3: Numeric types exercise
long longNumber = 6_000_000;
// TODO: Print the name and value of ‘longNumber’
}
}
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Marius Claassen,
Java Intermediate

Lecture 4: Numeric types solution
long longNumber = 6_000_000;
System.out.print(“longNumber: ” + longNumber);
}
} // longNumber: 6000000
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Java Intermediate

Lecture 5: Textual type example
Textual types problem statement:
Implement the textual data type ‘String’ and
print its name and value
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Lecture 5: Textual type example
String string = “Java is everywhere.”;
System.out.print(“Text: ” + string);
}
} // Text: Java is everywhere.
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Java Intermediate

Lecture 5: Textual type exercise
Print the textual data type ‘String’ initialized
as ‘Java continues to dominate.’
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Lecture 5: Textual type exercise
String myString = “Java continues to dominate.”;
// TODO: Print the name and value of ‘myString’
}
}
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Java Intermediate

Lecture 6: Textual type solution
String myString = “Java continues to dominate.”;
System.out.print(“myString: ” + myString);
}
} // myString: Java continues to dominate.
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Java Intermediate

Lecture 7: Convert types example
Converting types problem statement:
Convert a String to a float and a double to a
String
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Lecture 7: Convert types example
String stringText = “7.7”;
float floatNumber = Float.parseFloat(stringText);
System.out.print(“String to float: ” + floatNumber);
double doubleNumber = 200;
String text1 = Double.toString(doubleNumber);
System.out.print(“ndouble to String: ” + text1); } }
// String to float: 7.7
// double to String: 200.0
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Java Intermediate

Lecture 7: Convert types exercise
Convert an int to a String named ‘text’
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Lecture 7: Convert types exercise
int value = 1_000;
// TODO: Convert int ‘value’ to a String ‘text’
System.out.print(“int to String: ” + text);
}
}
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Lecture 8: Convert types solution
int value = 1_000;
String text = Integer.toString(value);
System.out.print(“int to String: ” + text);
}
} // int to String: 1000
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Java Intermediate

Lecture 9: Keyboard input example
Keyboard input problem statement:
Implement keyboard input to print the name
of the world’s largest economy
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Lecture 9: Keyboard input example
System.out.print(“Name the world’s largest economy ”);
Scanner scanner = new Scanner(System.in);
String largestEconomy = scanner.next;
System.out.print(largestEconomy+“ has the largest economy.”);}}
// Name the world’s largest economy ***?
// USA has the largest economy.
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Lecture 9: Keyboard input exercise
Create a Scanner object named ‘scanner1’
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Java Intermediate

Lecture 9: Keyboard input exercise
System.out.print(“Name the world’s most populous country ”);
// TODO: Create a Scanner object named ‘scanner1’
String largestPopulation = scanner1.next;
System.out.print(largestPopulation+“ has the largest population”); } }
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Lecture 10: Keyboard input solution
System.out.print(“Name the world’s most populous country ”);
Scanner scanner1 = new Scanner(System.in);
String largestPopulation = scanner1.next;
System.out.print(largestPopulation+“ has the largest population”); } }
// Name the world’s most populous country ***?
// China has the largest population
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TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
Marius Claassen,
Java Intermediate

Lecture 11: Import example
Import problem statement:
Implement import statements for the
‘LocalDate’ and ‘Month’ classes
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Lecture 11: Import example
import java.time.LocalDate;
import java.time.Month;
LocalDate jdk1Release = LocalDate.of(1996, Month.JANUARY, 21);
System.out.print(“JDK 1.0 release date: ” + jdk1Release); } }
// JDK 1.0 release date: 1996-01-21
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Lecture 11: Import exercise
Implement an import statement for the
‘LocalDate’ class
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Lecture 11: Import exercise
// TODO: Import the ‘LocalDate’ class
LocalDate jdk9ReleaseDate
= LocalDate.of(2017, Month. SEPTEMBER, 21);
System.out.print(“JDK SE 9 release date: ” + jdk9ReleaseDate); } }
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Lecture 12: Import solution
import java.time.LocalDate;
LocalDate jdk9ReleaseDate
= LocalDate.of(2017, Month. SEPTEMBER, 21);
System.out.print(“JDK SE 9 release date: ” + jdk9ReleaseDate); } }
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Lecture 13: Package example
Package statement problem statement:
Implement the package statement ‘courses’
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Lecture 13: Package example
package courses;
BeginnerJava beginnerJava = new BeginnerJava();
beginnerJava.printBeginnerJava();
IntermediateJava intermediateJava = new IntermediateJava();
intermediateJava.printIntermediateJava(); } }
// Java Beginner course published
// Java Intermediate course completed
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package courses;
public class BeginnerJava {
public void printBeginnerJava() {
System.out.print(“Java Beginner course published”);
}
}
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Java Intermediate

package courses;
public class IntermediateJava {
public void printIntermediateJava() {
System.out.print(“nJava Intermediate course completed”);
}
}
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Java Intermediate

Lecture 13: Package exercise
Implement the package statement
‘intermediatejava’
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Java Intermediate

Lecture 13: Package exercise
// TODO: Implement the package statement ‘intermediatejava’
Introduction introduction = new Introduction();
introduction.printIntroduction();
Contents contents = new Contents();
contents.printContents(); } }
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Java Intermediate

public class Introduction {
public void printIntroduction() {
System.out.print(“Introduction completed, ”);
}
}
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Java Intermediate

public class Contents {
public void printContents() {
System.out.print(“Contents started”);
}
}
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Java Intermediate

Lecture 14: Package solution
package intermediatejava;
Introduction introduction = new Introduction();
introduction.printIntroduction();
Contents contents = new Contents();
contents.printContents(); } }
// Introduction completed, Contents started
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public class Introduction {
public void printIntroduction() {
System.out.print(“Introduction completed, ”);
}
}
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Java Intermediate

public class Contents {
public void printContents() {
System.out.print(“Contents started”);
}
}
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Java Intermediate

Lecture 15: String class example
String class problem statement:
Declare a String named ‘businessName’
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Lecture 15: String class example
String businessName = “AlefTav Coding”;
System.out.print(“My business is named ” + businessName);
}
}
// My business is named AlefTav Coding
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Lecture 15: String class exercise
Declare a String, ‘courseTitle’ initialized as
‘Java for Intermediate Users’
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Lecture 15: String class exercise
// TODO: Declare a String, ‘courseTitle’ initialized as ‘Java for
// Intermediate Users’
System.out.print(“The title of this course: ” + courseTitle);
}
}
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Lecture 16: String class solution
String courseTitle = “Java for Intermediate Users”;
System.out.print(“The title of this course is ” + courseTitle);
}
}
// The title of this course is Java for Intermediate Users
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Lecture 17: Random class example
Random class problem statement:
Generate 4 random integers between 1 and
600, with a seed value of 3
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Lecture 17: Random class example
Random random = new Random(3);
System.out.print(“Four random integers between 1 and 600: ”);
for (int i = 0; i < 4; i++) { System.out.print(random.nextInt(600) + “ ”); }
}
}
// Four random integers between 1 and 600: 134 260 210 181
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Lecture 17: Random class exercise
Implement an object named ‘random’ with
seed value 9
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// TODO: Implement an object named, ‘random’ with seed value 9
System.out.print(“Five random integers between 1 and 200: ”);
}
}
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Java Intermediate

Implement an object named ‘random’ with
seed value 9
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// TODO: Implement an object named, ‘random’ with seed value 9
}
}
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Lecture 18: Random class solution
Random random = new Random(9);
}
}
// Five random integers between 1 and 200: 189 196 148 135 159
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Java Intermediate

Lecture 19: Math class example
Math class problem statement:
Print the answer to ‘baseValue’ 15.6, raised
to ‘powerValue’ 4.7
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Marius Claassen,
Java Intermediate

Lecture 19: Math class example
double baseValue = 15.6;
double powerValue = 4.7;
System.out.printf(“15.6⁴˙⁷: %.3f” + Math.pow(baseValue, powerValue));
}
}
// 405215.092
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Lecture 19: Math class exercise
Print to four decimal places the square root
of 1511
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Lecture 19: Math class exercise
double x = 1511;
// TODO: Print to 4 decimal places the square root of 1511
}
}
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Lecture 20: Math class solution
double x = 1511;
System.out.printf(“%.4f”, Math.sqrt(x));
}
}
// 38.8716
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TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
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Lecture 21: Java class example
Java class problem statement:
Implement a class named ‘Dog’
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Lecture 21: Java class example
Dog dog1 = new Dog();
dog1.getName();
}
}
// The dog’s name is ‘Faithful’.
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public class Dog {
public void getName() {
System.out.print(“The dog’s name is ‘Faithful’.” );
}
}
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Lecture 21: Java class exercise
Implement a class named ‘Person’
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Lecture 21: Java class exercise
Person person1 = new Person();
person1.saySomething();
}
}
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// TODO: Implement a class named ‘Person’
{
public void saySomething() {
System.out.print(“I am a person.” );
}
}
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Lecture 22: Java class solution
Person person1 = new Person();
person1.saySomething();
}
}
// I am a person.
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public class Person
{
public void saySomething() {
System.out.print(“I am a person.” );
}
}
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Lecture 23: Java Object example
Instantiate an object problem statement:
Instantiate an object named ‘mobilePhone’
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Lecture 23: Java Object example
MobilePhone mobilePhone = new MobilePhone();
mobilePhone.getName();
}
}
// Samsung or iPhone
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public class MobilePhone {
public void getName() {
System.out.print(“Samsung or iPhone” );
}
}
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Lecture 23: Java Object exercise
Instantiate an object named ‘person’
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Lecture 23: Java Object exercise
// TODO: Instantiate an object named ‘person’
person.speak();
}
}
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public class Person {
public void speak() {
System.out.print(“What a wonderful world!” );
}
}
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Lecture 24: Java Object solution
Person person = new Person();
person.speak();
}
}
// What a wonderful world!
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Java Intermediate

public void speak() {
System.out.print(“What a wonderful world!” );
}
}
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Lecture 25: Constructor example
Constructor problem statement:
Implement the constructor of the class
‘MobilePhone’
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Lecture 25: Constructor example
MobilePhone mobilePhone = new MobilePhone(“Samsung”, 1000);
}
}
// Name: Samsung
// Price: $1000.00
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String name;
double price;
public MobilePhone(String newName, double newPrice) { // constructor
name = newName;
price = newPrice;
System.out.printf(“Name: %snPrice: $%.2f”, name, price);
}
}
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Lecture 25: Constructor exercise
Implement the constructor of the ‘Person’
class
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Lecture 25: Constructor exercise
Person person = new Person(“Sarah”, 50);
}
}
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String name;
int age;
// TODO: Implement the constructor of the ‘Person’ class
{
name = newName;
age = newAge;
System.out.print(“Name: ” + name + “, ” + “Age: ” + age); } }
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Lecture 26: Constructor solution
Person person = new Person(“Sarah”, 50);
}
}
// Name: Sarah, Age: 50
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String name;
int age;
public Person(String newName, int newAge)
{
name = newName;
age = newAge;
System.out.print(“Name: ” + name + “, ” + “Age: ” + age); } }
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Lecture 27: Encapsulation example
Encapsulation problem statement:
Declare a private field ‘price’ and implement
a public method ‘setPrice’ with one
parameter ‘newPrice’
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Lecture 27: Encapsulation example
MobilePhone mobilePhone = new MobilePhone(300);
}
}
// Mobile phone price: $300.00
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private double price;
public void setPrice(double newPrice) {
price = newPrice;
System.out.printf(“Mobile phone price: $%.2f”, price);
}
}
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Lecture 27: Encapsulation exercise
Declare a private field ‘name’ and implement
a public method ‘setName’ with one
parameter ‘newName’
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Lecture 27: Encapsulation exercise
person.setName(“David”);
}
}
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// TODO: Declare a private field ‘name’
// TODO: Implement a public method ‘setName’ with one parameter
// ‘newName’
{
name = newName;
System.out.printf(“Name: %s”, name); } }
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Lecture 28: Encapsulation solution
person.setName(“David”);
}
}
// Name: David
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private String name;
public void setName(String newName)
{
name = newName;
System.out.printf(“Name: %s”, name); } }
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Java Intermediate

Lecture 29: ArrayList example
ArrayList problem statement:
Implement an ArrayList of type String, named
‘planets’
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Lecture 29: ArrayList example
ArrayList<String> planets = new ArrayList<>();
planets.add(“Mercury”);
planets.add(“Venus”);
planets.add(“Earth”);
planets.add(“Mars”);
for (String planet : planets) { System.out.print(planet + “ ”); } } }
// Mercury Venus Earth Mars
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Lecture 29: ArrayList exercise
Implement an ArrayList of type String, named
‘currencies’
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Lecture 29: ArrayList exercise
// TODO: Implement an ArrayList of type String , named ‘currencies’
currencies.add(“US Dollar”);
currencies.add(“Indian Rupee”);
currencies.add(“Thai Baht”);
for (String currency : currencies) { System.out.print(currency + “ ”); } } }
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Lecture 30: ArrayList solution
ArrayList<String> currencies = new ArrayList<>();
currencies.add(“US Dollar”);
currencies.add(“Indian Rupee”);
currencies.add(“Thai Baht”);
for (String currency : currencies) { System.out.print(currency + “ ”); } } }
// US Dollar Indian Rupee Thai Baht
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Lecture 31: Debugging example
Debugging problem statement:
Implement debugging to handle the
exception, StackOverflowError
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Lecture 31: Debugging example
int y = 8;
System.out.print(“Fibonacci value at index ” + y + “: ” + getFibonacci(y));
}
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private static long getFibonacci(int x) {
return x <= 2 ? 1 : getFibonacci(x - 1) + getFibonacci(x - 2) ;
}
}
// Fibonacci value at index 8: 21
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Lecture 31: Debugging exercise
Implement debugging to handle the
exception, StackOverflowError
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Lecture 31: Debugging exercise
int y = 10;
}
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// TODO: Implement debugging to handle the exception,
// StackOverflowError
return getFibonacci(x - 1) + getFibonacci(x - 2);
}
}
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Lecture 32: Debugging solution
int y = 10;
}
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return x <= 2 ? 1 : getFibonacci(x - 1) + getFibonacci(x - 2) ;
}
}
// Fibonacci value at index 10: 55
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TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
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Lecture 33: Lambda Part 1 example
Lambda part 1 problem statement:
Implement a lambda expression to print
‘Hello, lambda’
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Thread thread1 = new Thread( () -> System.out.print(“Hello, lambda”); )
thread1.run();
}
}
// Hello, lambda
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Lecture 33: Lambda Part 1 exercise
Implement a lambda object named ‘thread’ to
print ‘My first lambda’
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// TODO: Implement a lambda object named ‘thread’ to print,
// ‘My first lambda’
thread.run();
}
}
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Lecture 34: Lambda Part 1 solution
Thread thread = new Thread( () -> System.out.print(“My first lambda”); )
thread.run();
}
}
// My first lambda
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Lambda Part 2 problem statement:
Implement a lambda to remove even numbers
from a list
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import java.util.ArrayList; import java.util.Arrays;
ArrayList<Integer> values = new ArrayList<>(Arrays.asList(
1, 2, 3, 4, 5, 6, 7) );
values.removeIf(i -> i % 2 == 0);
values.forEach(i -> System.out.print(i + “ ”) ); } }
// 1 3 5 7
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Implement a lambda to remove odd numbers
from a list
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ArrayList<Integer> numbers = new ArrayList<>(Arrays.asList(
5, 6, 7, 8, 9, 10) );
// TODO: Implement a lambda to remove odd numbers from a list
numbers.forEach(i -> System.out.print(i + “ ”) ); } }
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Lecture 36: Lambda Part 2 solution
5, 6, 7, 8, 9, 10) );
numbers.removeIf(i -> i % 2 != 0);
numbers.forEach(i -> System.out.print(i + “ ”) ); } }
// 6 8 10
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Lecture 37: Streams Part 1 example
Streams Part 1 problem statement:
Implement the stream() to print words in
alphabetical order
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import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator;
ArrayList<String> cities = new ArrayList<>(Arrays.asList(“Mumbai”,
“Karachi”, “Los Angeles”, “Nonthaburi City”, “Kolkata”, “New York”) );
cities.stream().sorted(Comparator.naturalOrder())
.forEach(s -> System.out.print(s + “ ”) ); } }
// Karachi Kolkata Los Angeles Mumbai New York Nonthaburi City
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Lecture 37: Streams Part1 exercise
Implement the stream() to print words in
reverse order
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ArrayList<String> capitalCities = new ArrayList<>(Arrays.asList(
“Delhi”, “Islamabad”, “Bangkok”, “Washington”, “Jakarta”) );
// TODO: Implement the stream()
// TODO: to print words
// TODO: in reverse order
} }
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Lecture 38: Streams Part 1 solution
ArrayList<String> capitalCities = new ArrayList<>(Arrays.asList(
“Delhi”, “Islamabad”, “Bangkok”, “Washington”, “Jakarta”) );
capitalCities.stream().sorted(Comparator.reverseOrder())
.forEach(s -> System.out.print(s + “ ”) ); } }
// Washington Jakarta Islamabad Delhi Bangkok
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Streams Part 2 problem statement:
Implement the stream() to print an int using
the filter, map, reduce pattern
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6, 7, 8, 9) );
int sum = numbers.stream().filter(i -> i < 8).map(e -> e * 3)
.reduce(0, (partAnswer, y) -> partAnswer + y);
System.out.print(sum); } }
// 39
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Implement the stream() to print an int using
the filter, map, reduce pattern
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1, 2, 3, 4, 5) );
// TODO: Square each value larger than 3 and get their sum
// TODO:
// TODO:
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Marius Claassen,
Java Intermediate

Lecture 40: Streams Part 2 solution
1, 2, 3, 4, 5) );
int sum = values.stream().filter(i -> i > 3).map(e -> e * e)
.reduce(0, (partAnswer, y) -> partAnswer + y);
// 41
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Java Intermediate

Lecture 41: JavaFX Colors example
JavaFX colors problem statement:
Implement the ColorPicker class to display
colours and their web # values
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Marius Claassen,
Java Intermediate

Lecture 41: JavaFX Colors example
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ColorPicker;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
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Marius Claassen,
Java Intermediate

public class Lecture41 extends Application {
@Override public void start(Stage stage) {
ColorPicker colorPicker1 = new ColorPicker();
colorPicker1.setOnAction(event -> colorPicker1.getValue() );
HBox hBox = new HBox(colorPicker1);
hBox.setStyle(“-fx-background-color: #d3d3d3”);
stage.setTitle(“JavaFX Colors Example”);
stage.setScene(new Scene(hBox, 400, 400) );
stage.show(); } }
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Java Intermediate

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ColorPicker
Marius Claassen,
Java Intermediate

Lecture 41: JavaFX Colors exercise
Implement an object named ‘colorPicker’ to
display colours and their web # values
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Marius Claassen,
Java Intermediate

Lecture 41: JavaFX Colors exercise
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Marius Claassen,
Java Intermediate

// TODO: Implement an object named ‘colorPicker’
// TODO: to display colours and their # web values
HBox hBox = new HBox(colorPicker);
stage.setTitle(“JavaFX Colors Solution”);
stage.show(); } }
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Marius Claassen,
Java Intermediate

Lecture 42: JavaFX Colors solution
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Marius Claassen,
Java Intermediate

ColorPicker colorPicker = new ColorPicker();
colorPicker.setOnAction(event -> colorPicker.getValue() );
HBox hBox = new HBox(colorPicker);
stage.setTitle(“JavaFX Colors Solution”);
stage.show(); } }
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Java Intermediate

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ColorPicker
Marius Claassen,
Java Intermediate

Lecture 43: JavaFX shape example
JavaFX shapes problem statement:
Create a gray rectangle with dimensions 0, 0,
230, 150
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Marius Claassen,
Java Intermediate

Lecture 43: JavaFX shape example
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
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Java Intermediate

Rectangle rectangle1 = new Rectangle(0, 0, 230, 150);
rectangle1.setFill(Color.GRAY);
VBox vBox = new VBox();
vBox.getChildren().add(rectangle1);
stage.setTitle(“JavaFX Shapes Example”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
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Java Intermediate

185
Rectangle
Marius Claassen,
Java Intermediate

Lecture 43: JavaFX shape exercise
Create a gray rectangle named ‘rectangle’
with dimensions 0, 0, 390, 100
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Marius Claassen,
Java Intermediate

Lecture 43: JavaFX shape exercise
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Marius Claassen,
Java Intermediate

// TODO: Create a gray rectangle named ‘rectangle’
// TODO: with dimensions 0, 0, 390, 100
vBox.getChildren().add(rectangle);
stage.setTitle(“JavaFX Shapes Solution”);
stage.show(); } }
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Marius Claassen,
Java Intermediate

Lecture 44: JavaFX shapes solution
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Marius Claassen,
Java Intermediate

Rectangle rectangle = new Rectangle(0, 0, 390, 100);
rectangle.setFill(Color.GRAY);
vBox.getChildren().add(rectangle);
stage.setTitle(“JavaFX Shapes Solution”);
stage.show(); } }
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Marius Claassen,
Java Intermediate

191
Rectangle
Marius Claassen,
Java Intermediate

Lecture 45: JavaFX 3D graphics
JavaFX graphics problem statement:
Create an object named ‘sphere’ with radius
of 200. Wrap the ‘phongMaterial’ object onto
the sphere and add the sphere to the ‘vBox’
object
https://en.wikipedia.org/wiki/Behrmann_projection#/media/File:Behrmann_projection_SW.jpg
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Marius Claassen,
Java Intermediate

Lecture 45: JavaFX 3D graphics
import javafx.scene.image.Image;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Sphere;
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Marius Claassen,
Java Intermediate

Image image = new Image(Lecture45.class.getResource(
“worldmap1.jpg”).toExternalForm() );
PhongMaterial phongMaterial = new PhongMaterial();
phongMaterial.setDiffuseColor(Color.WHITE);
phongMaterial.setDiffuseMap(image);
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Marius Claassen,
Java Intermediate

Sphere sphere = new Sphere(200);
sphere.setMaterial(phongMaterial);
vBox.getChildren().add(sphere);
stage.setTitle(“JavaFX Graphics Example”);
stage.show(); } }
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Java Intermediate

196
3D Graphic
Marius Claassen,
Java Intermediate

Lecture 45: JavaFX graphics exercise
Create an object named ‘sphere’ with radius
of 200. Wrap the ‘phongMaterial’ object onto
the sphere and add the sphere to the ‘vBox’
object
https://en.wikipedia.org/wiki/List_of_map_projections#/media/File:Equirectangular_projection_SW.jpg
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Marius Claassen,
Java Intermediate

Lecture 45: JavaFX graphics
exercise
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Java Intermediate

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Marius Claassen,
Java Intermediate

// TODO: Create an object named ‘sphere’ with radius of 200.
// TODO: Wrap the ‘phongMaterial’ object onto the sphere
// TODO: and add the sphere to the vBox
stage.setTitle(“JavaFX Graphics Example”);
stage.show(); } }
200
Marius Claassen,
Java Intermediate

Lecture 46: JavaFX graphics
solution
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Java Intermediate

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Marius Claassen,
Java Intermediate

Sphere sphere = new Sphere(200);
sphere.setMaterial(phongMaterial);
vBox.getChildren().add(sphere);
stage.setTitle(“JavaFX Graphics Solution”);
stage.show(); } }
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Java Intermediate

204
3D Graphic
Marius Claassen,
Java Intermediate

Lecture 47: JavaFX video example
JavaFX video problem statement:
Create a video player by implementing the 3
objects ‘media1’, ‘mediaPlayer1’ and
‘mediaView1’.
https://www.youtube.com/watch?v=zg79C7XM1Xs
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Marius Claassen,
Java Intermediate

Lecture 47: JavaFX video example
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import java.io.File;
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Marius Claassen,
Java Intermediate

final String PATH = “C:/videos/Java is what Java does video.mp4”;
File file = new File(PATH);
Media media1 = new Media(file.toURI().toString() );
MediaPlayer mediaPlayer1 = new MediaPlayer(media1);
mediaPlayer1.setAutoPlay(true);
MediaView mediaView1 = new MediaView(mediaPlayer1);
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Marius Claassen,
Java Intermediate

mediaView.setFitWidth(800);
mediaView.setFitHeight(500);
StackPane stackPane = new StackPane(mediaView1);
stage.setTitle(“JavaFX Video Example”);
stage.setScene(new Scene(stackPane) );
stage.show(); } }
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Marius Claassen,
Java Intermediate

209
Video
Marius Claassen,
Java Intermediate

Lecture 47: JavaFX video exercise
Create a video player by implementing the 3
objects ‘media’, ‘mediaPlayer’ and
‘mediaView’
https://www.youtube.com/watch?v=b-Cr0EWwaTk
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Marius Claassen,
Java Intermediate

Lecture 47: JavaFX video exercise
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Marius Claassen,
Java Intermediate

final String PATH = “C:/videos/Java life video.mp4”;
// TODO: Create a media player by implementing the 3 objects ‘media’
// TODO: ‘mediaPlayer’
mediaPlayer.setAutoPlay(true);
// TODO: and ‘mediaView’
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Java Intermediate

StackPane stackPane = new StackPane(mediaView);
stage.setTitle(“JavaFX Video Solution”);
stage.show(); } }
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Marius Claassen,
Java Intermediate

Lecture 48: JavaFX video solution
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Marius Claassen,
Java Intermediate

final String PATH = “C:/videos/Java life video.mp4”;
Media media = new Media(file.toURI().toString() );
MediaPlayer mediaPlayer = new MediaPlayer(media);
mediaPlayer.setAutoPlay(true);
MediaView mediaView = new MediaView(mediaPlayer);
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Marius Claassen,
Java Intermediate

StackPane stackPane = new StackPane(mediaView);
stage.setTitle(“JavaFX Video Solution”);
stage.show(); } }
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Java Intermediate

217
Video
Marius Claassen,
Java Intermediate

Lecture 49: KeyPressed example
JavaFX KeyPressed problem statement:
Implement the setOnKeyPressed() method to
print whether or not the letter ‘B’ is pressed
218
Marius Claassen,
Java Intermediate

Lecture 49: KeyPressed example
import javafx.geometry.Pos;
import javafx.scene.input.KeyCode;
import javafx.scene.text.Text;
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Marius Claassen,
Java Intermediate

HBox hBox = new HBox();
Text text = new Text();
hBox.getChilden().add(text);
hBox.setAlignment(Pos.CENTER);
Scene scene = new Scene(hBox, 400, 400);
scene.setFill(Color.LIME);
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Marius Claassen,
Java Intermediate

scene.setOnKeyPressed(event -> text.setText(
event.getCode() == KeyCode.B ? “Letter B” : ”Not letter B”) );
stage.setTitle(“JavaFX KeyPressed Event Example”);
stage.setScene(scene);
stage.show(); } }
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Java Intermediate

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KeyPressed Event
Marius Claassen,
Java Intermediate

Lecture 49: keyPressed exercise
Implement the setOnKeyPressed() method to
print whether or not the TAB key is pressed
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Marius Claassen,
Java Intermediate

Lecture 49: keyPressed exercise
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Java Intermediate

scene.setFill(Color.GREENYELLOW);
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Marius Claassen,
Java Intermediate

// TODO: Implement the setOnKeyPressed() to print whether or not
// TODO: the TAB key is pressed
stage.setTitle(“JavaFX KeyPressed Event Solution”);
stage.show(); } }
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Marius Claassen,
Java Intermediate

Lecture 50: keyPressed solution
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Marius Claassen,
Java Intermediate

scene.setFill(Color.GREENYELLOW);
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Java Intermediate

scene.setOnKeyPressed(event -> text.setText(
event.getCode() == KeyCode.TAB ? “TAB key” : ”Not TAB key”) );
stage.setTitle(“JavaFX KeyPressed Event Solution”);
stage.show(); } }
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Java Intermediate

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KeyPressed Event
Marius Claassen,
Java Intermediate

TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
6. JavaFX
7. Conclusion
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Java Intermediate

Lecture 51: Final remarks
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Java Intermediate

To buy this course:
• mariusclaassen@gmail.com
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Marius Claassen,
Java Intermediate

Java for intermediate users

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