Java Programming Examples

Compile and Execute Java Online

java

public class ABC
{
    public void disp()
    {
        System.out.println("hello");
    }
    public static void main(String args[])
    {
        ABC obj=null;
        obj.disp();
    }
}

Compile and Execute Java Online

java

public class hello
{
   class Employee
   {
       int salary =400000;
       class programmer extends Employee
   }

relation.........demo....

java

import java.util.*;
interface operation
{
  double square(double a);
  double cube(double a);
  double sine(double a);
  double cosine(double a);


}
public class HelloWorld implements operation
{

    public double square(double a)
     {
        return Math.pow(a,2);

     }
      public double cube(double a)
     {
        return Math.pow(a,3);

     }
     public double sine(double a)
     {
       double z=Math.toRadians(a);
        return Math.sin(z);

     }
     public double cosine(double a)
     {
       double y=Math.toRadians(a);
        return Math.cos(y);

     }
public static void main(String args[])
{
    Double x;
   HelloWorld i=new HelloWorld(); 
  operation a=new HelloWorld();
  Scanner sc=new Scanner(System.in);
  //System.out.println("enter no");
 // x=sc.nextDouble();
 System.out.println("square is="+a.square(5));
 System.out.println("cube is="+a.cube(6));
System.out.println("sine is="+a.sine(45));
System.out.println("cosine is="+a.cosine(90));

    
}
}

Compile and Execute Java Online

java

import java.util.Scanner;
public class profile{

     public static void main(String []args){
        Scanner input = new Scanner(System.in);
        
        System.out.print("Your name: ");
        String name = input.nextLine();
        System.out.println(name);
        
        System.out.print("Your Surname: ");
        String surname = input.nextLine();
        System.out.println(surname);
        
      System.out.print("Your nickname: ");
        String nickname = input.nextLine();
        System.out.println(nickname);
        
        System.out.print("Your Age: ");
        String age = input.nextLine();
        System.out.println(age);
        
       
     }
}

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

java

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
             java.lang.Object
        java.util.AbstractCollection<E>
            java.util.AbstractList<E>
                java.util.ArrayList<E> 


     }
}

RateSpielmitSchleifen

java

public class RateSpielmitSchleifen {
  
  public static void main(String[] args) {

int erlaubteVersuche = 0;
while (erlaubteVersuche < 1 || erlaubteVersuche > 8) {
  System.out.Println ("Wieviele Versuche? Zahl zwischen 1 - 8");
  erlaubteVersuche = Konsole.Read.int;
};

int zufallsZahl = (int)(Math.random() * 100) + 1; 
int versuchsZaehler = 0;

while (versuchsZaehler < erlaubteVersuche && gerateneZahl != zufallsZahl ) {
  versuchsZaehler++;
  System.out.Println("Versuch: " + versuchsZaehler);
  System.out.Println("Raten Sie mal");
  int gerateneZahl = Konsole.Read.int;
  
  if (gerateneZahl < zufallsZahl) {
      System.out.Println("Kleiner");
      }
  else if (gerateneZahl > zufallsZahl) {
    Sytstem.out.Println("Größer");
  }
  else {
        Sytstem.out.Println("<p>Glückwunsch, Sie haben die Zahl " + zufallsZahl + " korrekt erraten</p>");
      }
}

if (versuchsZaehler == erlaubteVersuche && gerateneZahl != zufallsZahl ) {
   Sytstem.out.Println("Sie haben die maximale Anzahl an Versuchen erreicht");
};

Compile and Execute Java Online

java

class Human{
   public void eat()
   {
      System.out.println("Human is eating");
   }
}
class Boy extends Human{
   public void eat(){
      System.out.println("Boy is eating");
   }
   public static void main( String args[]) {
      Boy obj = new Boy();
      obj.eat();
   }
}

Thread_Demo_example_print_numbers

java

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
        
     }
}

Compile and Execute Java Online

java

abstract class shape{
abstract void draw();
 abstract int area();
}

class square extends shape{
int side;
square(int s){
side=s;
}
int area(){
return side*side;
}
void draw(){
System.out.println("square");
}
}

class circle extends shape{
int radius;
circle(int r){
radius=r;
}
int area(){
return radius*radius;
}
void draw(){
System.out.println("circle");
}
}

class rectangle extends shape{
    int n1;
    int n2;
rectangle(int l,int h){
n1=l;
n2=h;
}
int area(){
return n1*n2;
}
void draw(){
System.out.println("rectangle");
}
}

public class test{
public static void main(String args[]){
shape a=new square(4);
shape b=new rectangle(5,6);
circle c=new circle(3);
System.out.println(a.area());
System.out.println(b.area());
System.out.println(c.area());
}
}

Compile and Execute Java Online

java

public class HelloWorld{

    static class Player{
        String name;
        int hp;
        int atk;
        
        public Player(String name, int hp, int atk){
            this.name = name;
            this.hp = hp;
            this.atk = atk;
        }
        public void attack(Enemy enemy){
            System.out.println("Enemy Attack!");
            enemy.hp -= this.atk;
            System.out.println("Enemy hp :"+enemy.hp);
        }
        public boolean isLive(){
            if(hp <= 0){
                return false;
            }else{
                return true;
            }
        }
    }
    
    static class Enemy{
        String name;
        int hp;
        int atk;
        
        public Enemy(String name, int hp, int atk){
            this.name = name;
            this.hp = hp;
            this.atk = atk;
        }
        public void attack(Player player){
            System.out.println("Player Attack!");
            player.hp -= this.atk;
            System.out.println("Player hp :"+player.hp);
        }
        public boolean isLive(){
            if(hp <= 0){
                return false;
            }else{
                return true;
            }
        }
    }

     public static void main(String []args){
        
        Player player = new Player("gampari", 100, 12);
        Enemy enemy = new Enemy("Orc", 80, 5);
        
        while(player.isLive() && enemy.isLive()){
            player.attack(enemy);
            if(!enemy.isLive()) break;
            enemy.attack(player);
        }
        
        if(player.isLive()){
            System.out.println("player win");
        }else{
            System.out.println("enemy win");
        }
     }
}

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