01 Java Language And OOP Part I LAB

Java Language and OOP
Part I LAB
By Hari Christian

Agenda
• 01 Java Keyword
• 02 Primitive Data Type
• 03 Wrapper Class
• 04 Variabel or Identifier
• 05 Expression Statement
• 06 Comment in Java
• 07 Comment Single Line
• 08 Comment Multiple Line
• 09 Casting
• 10 Overflow

LAB 1 – Hello World
public class Lab1 {
public static void main(String[] args) {
System.out.println(“Hello World!!!”);
}
}

LAB 2 – Primitive Data Type
public class Lab2 {
byte a = 1; // ini adalah literal value
short b = 2; // juga dapat disebut assignment
int c = 3; // juga dapat disebut statement
long d;
d = a + b + c;
System.out.println("hasilnya = " + d);
}
}

public class Lab3 {
double pi = 3.14;
double r = 2.12;
double luas;
luas = pi * r * r;
System.out.println("Luas Lingkaran = " + luas);
}
}

public class Lab4 {
char ch1 = 65;
char ch2 = 'B';
System.out.println("ch1 = " + ch1);
System.out.println("ch2 = " + ch2);
}
}

public class Lab5 {
boolean b = true;
System.out.println ("Nilai b = " +b);
if (b) {
System.out.println("Statemen ke-1 dieksekusi");
}
b = false;
System.out.println("Nilai b = " +b);
if (b) {
System.out.println("Statemen ke-2 tidak dieksekusi");
}
if (!b) {
System.out.println("Statemen ke-3 dieksekusi");
}
System.out.println ("5 <= 10 mengembalikan nilai = " + (5 <= 10));
System.out.println("4 > 6 mengembalikan nilai " + (4 > 6));
}

LAB 6 – Expression Statement
public class Lab6 {
int i = 4;
int j = 6;
int x = i++ + ++i - --j + ++j + j++;
System.out.println(“x = “ + x);
System.out.println(“i = “ + i);
System.out.println(“j = “ + j);
}
}

LAB 7 – Comment
/**
* Ini adalah latihan praktikum PBO
* PBO di ISTB menggunakan Java
* Lab 7 ini menjelaskan tentang comment
*/
public class Lab7 {
// ini comment satu baris
/*
ini comment
dua baris
atau lebih
*/
}
}

LAB 8 – Casting Identity
public class Lab8 {
int i = 5;
int j = i;
System.out.println(“Isi dari j yaitu = ” + j);
}
}

LAB 9 – Casting Widening
public class Lab9 {
int i = 5;
double d = i;
System.out.println(“Isi dari d yaitu = ” + d);
}
}

LAB 10 – Casting Narrowing
public class Lab10 {
double d = 5.6;
int i = (int) d;
System.out.println(“Isi dari i yaitu = ” + i);
}
}

LAB 11 – Wrapper Class
int min = Integer.MIN_VALUE;
int max = Integer.MAX_VALUE;
System.out.println(“min = ” + min);
System.out.println(“max = ” + max);
}
}

LAB 12 – Wrapper Class
Integer a = 5;
Integer b = 7;
Integer c = a + b;
System.out.println(c);
}
}

LAB 13 – Overflow
int min = Integer.MIN_VALUE;
int max = Integer.MAX_VALUE;
int over1 = max + 1;
System.out.println(over1);
int over2 = min - 1;
System.out.println(over2);
}
}

01 Java Language And OOP Part I LAB

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01 Java Language And OOP Part I LAB