Java Programming Examples

ConstructorDemo

java

import java.util.Random;
import java.math.BigInteger;
import java.net.HttpCookie;
import java.util.GregorianCalendar;

/**
 * Demonstrates the creation of objects and their initialization
 * with constructors.
 * 
 * @author Anthony Polanco
 */
public class ConstructorDemo {
    
    public static void main (String[]args){
        Random rand = new Random();
        BigInteger num = new BigInteger("123456789");
        HttpCookie cookie = new HttpCookie("username","apolanco");
        GregorianCalendar today = new GregorianCalendar();
        GregorianCalendar bDay = new GregorianCalendar(1998, 12, 12);
    }
}

Compile and Execute Java Online

java

/*
*I am cool
*@author Justin Dwyer
*/

public class ArithmeticDemo{

    public static void main(String [] args) {
     int x = 11;
     int y = 5;
     int v1 = x + y;
     int v2 = x - y;
     int v3 = x / y;
     int v4 = x % y;
     //sometimes i dream about cheese - valve 2004
     /*
    *this
    *is
    *a
    *multiline
    *comment
    */
     System.out.println(v1);
     System.out.println(v2);
     System.out.println(v3);
     System.out.println(v4);
    }

}

ArithmeticDemo

java

/**
 * Demonstrates the five arithmetic operators.
 * 
 * @author Lauren Ferrara
 */
public class ArithmeticDemo {

     public static void main(String []args){
        int x = 13;
        int y = 5;
        
        // perform some arithmetic
        int z1 = x + y;
        int z2 = x - y;
        int z3 = x * y;
        int z4 = x / y;
        int z5 = x % y;
        
        // this is multiline
        // comment
        System.out.println(z1);
        System.out.println(z2);
        System.out.println(z3);
        System.out.println(z4);
        System.out.println(z5);
        
        /* this is a multiline comment
           it spans many lines */
        
        System.out.println(x * 7 + y);
     }
}

Section2-ArithmeticDemo

java

/**
 * Demonstrates the five arithmetic operators.
 * 
 * @author Brandon Bopp
 */
public class ArithmeticDemo {

     public static void main(String []args) {
         int x = 13;
         int y = 5;
         
         // perform some arithmetic
         int z1 = x + y;
         int z2 = x - y;
         int z3 = x * y;
         int z4 = x / y;
         int z5 = x % y;
         
         // This is a multiline comment that
         // is really pretty useless but I have
         // to say SOMEthing.
         System.out.println(z1);
         System.out.println(z2);
         System.out.println(z3);
         System.out.println(z4);
         System.out.println(z5);
         
         /* This is a multiline comment.
            see... it spans many lines.
            blah blah blah. */
            
        System.out.println(x * 7 + y);
        System.out.println(2.34 / 8.196);
        System.out.println("abc" + "xyz");
        
        System.out.println("The remainder is " + z5);
     }
}

MathDemo

java

/**
 * Demonstrates the "Big Five" of math
 * 
 * @author Fenton Krupp
 */

public class MathDemo {

    public static void main(String []args){
        int x = 13;
        int y = 5;
        
        //to slam some simple math
        int z1 = x + y;
        int z2 = x - y;
        int z3 = x * y;
        int z4 = x / y;
        int z5 = x % y;
        
        /*
         *
         * WHAT A mAdmAN sT0p tH3 pre5ses 
         * It spans many lines.
         * These stars make it look pretty.
         *
         */
         
        System.out.println("z1 is " + z1 + ".");
        System.out.println("z2 is " + z2 + ".");
        System.out.println("z3 is " + z3 + ".");
        System.out.println("z4 is " + z4 + ".");
        System.out.println("z5 is " + z5 + ".");
        
        System.out.println(x * 7 + y);
        }
}

ArithDemo

java

/**
 *Demonstrates arithmitic
 * 
 * @author Nick Brown
 * 
 */



public class ArithDemo {

	public static void main (String [] args) {
	   
        int x = 5;
        int y = 2;
        int z1 = x + y;
        int z2 = x * y;
        int z3 = x + y;
        int z4 = x - y;
        int z5 = x % y;
        
        System.out.println(z1);
        System.out.println(z2);
        System.out.println(z3);
        System.out.println(z4);
        System.out.println(z5);
        
        System.out.println(z4 * 45);
        
        
        
        
        
       System.out.println("1");
       System.out.println("3");
       System.out.println("3");
       System.out.println("7");
       System.out.println("1337");
	}

}

HelloWorld

java

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

Section2-HelloWorld

java

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

HelloWorld

java

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

    }
}

Hello World

java

public class EmptyProgram{

     public static void main(String []args){
         
     }
         
}

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