JAVA_SAMPLE CODING, JAVA BASICS PROGRAMS.pptx

JAVA_SAMPLE CODING, JAVA BASICS PROGRAMS.pptx

• 1.
  UNIT – INPUTTYPE IN JAVA Input Types In the example above, we used the nextLine() method, which is used to read Strings. To read other types, look at the table below: Method Description nextBoolean() Reads a boolean value from the user nextByte() Reads a byte value from the user nextDouble() Reads a double value from the user nextFloat() Reads a float value from the user nextInt() Reads a int value from the user nextLine() Reads a String value from the user nextLong() Reads a long value from the user nextShort() Reads a short value from the user
• 2.
  UNIT1 – INPUTTYPE IN JAVA import java.util.Scanner; class Main1 { public static void main(String[] args) { Scanner myObj = new Scanner(System.in); System.out.println("Enter name, age and salary:"); // String input String name = myObj.nextLine(); // Numerical input int age = myObj.nextInt(); double salary = myObj.nextDouble(); // Output input by user System.out.println("Name: " + name); System.out.println("Age: " + age); System.out.println("Salary: " + salary); } }
• 3.
  UNIT1 – INPUTTYPE IN JAVA
• 4.
  UNIT1 – INPUTTYPE IN JAVA import java.util.Scanner; // Import the Scanner class class MyClass { public static void main(String[] args) { int x, y, sum; Scanner myObj = new Scanner(System.in); // Create a Scanner object System.out.println("Type a number:"); x = myObj.nextInt(); // Read user input System.out.println("Type another number:"); y = myObj.nextInt(); // Read user input sum = x + y; // Calculate the sum of x + y System.out.println("Sum is: " + sum); // Print the sum }}
• 5.
  UNIT1 – INPUTTYPE IN JAVA
• 6.
  ADD TWO NUMBERS classMain2 { public static void main(String[] args) { System.out.println("Enter two numbers"); int first = 10; int second = 20; System.out.println(first + " " + second); // add two numbers int sum = first + second; System.out.println("The sum is: " + sum); } }
• 7.
  ADD TWO NUMBERS
• 8.
  Multiply Two Floating-PointNumbers public class MultiplyTwoNumbers { public static void main(String[] args) { float first = 1.5f; float second = 2.0f; float product = first * second; System.out.println("The product is: " + product); } } Output: The product is: 3.0
• 9.
  Swap two numbersusing temporary variable public class SwapNumbers { public static void main(String[] args) { float first = 1.20f, second = 2.45f; System.out.println("--Before swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); // Value of first is assigned to temporary float temporary = first; // Value of second is assigned to first first = second; // Value of temporary (which contains the initial value of first) is assigned to second second = temporary; System.out.println("--After swap--"); System.out.println("First number = " + first); System.out.println("Second number = " + second); } }
• 10.
  Swap two numbersusing temporary variable • Output: --Before swap– First number = 1.2 Second number = 2.45 --After swap– First number = 2.45 Second number = 1.2
• 11.
  References • Java TheComplete Reference, Mc Graw Hill Edition, Ninth Edition Herbert Schildt 2016