Java Program without Semicolon

 class Program
{
public static void main( String[] args )
{
 if( System.out.printf( "India not poor country%n" )== null ){
 }
}}

OUTPUT:
India not poor country

Factorial Using While loop in java

import java.util.Scanner;

class FactorialWhile{

 public static void main(String args[]){

    int fact=1,num,i=1;

    System.out.println("Enter the number:");

   Scanner in=new Scanner(System.in);

   num=in.nextInt();

  while(i<=num){

    fact=fact*i;

    i++;
}

  System.out.println("factorial of given number is "+fact);
}  }


OUTPUT:

Enter the number:
4
factorial of given number is 24

String Reverse Program in Java Wihtout Reverse Function

import java.util.Scanner;

public class StringReverse {
public static void stringReverse(String name)
{
    String str=name;
    char c[]=str.toCharArray();
        System.out.println("Reversed String : ");
    for(int i=str.length();i>0;i--)
    {
        System.out.print(c[i-1]);

    }
       

       
        }
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner in=new Scanner(System.in);
        System.out.println("enter your string:");
        String input=in.nextLine();
        System.out.println("Given String Value :"+ input);
        stringReverse(input);
    }

}


OUTPUT:
enter your string:
Kanimozhi
Given String Value :Kanimozhi
Reversed String :
ihzominaK

Swapping Without Third Variable

import java.util.Scanner;
class SwappingNoThird
    {
        public static void  main(String san[])
    {
        int firstNumber,secondNumber;
        Scanner in=new Scanner(System.in);
   
        System.out.println("Enter the first number:");
        firstNumber=in.nextInt();
   
        System.out.println("Enter the second Number :");
        secondNumber=in.nextInt();
   
        System.out.println("Before Swapping two variables  FirstNumber : "  +firstNumber +" Second Number " +secondNumber);
       
        firstNumber=firstNumber+secondNumber;
        secondNumber=firstNumber-secondNumber;
        firstNumber=firstNumber-secondNumber;
       
   
        System.out.println("After  Swapping two variables  FirstNumber : "  +firstNumber +" Second Number " +secondNumber);
    }
    }

OUTPUT:

Enter the first number:
76
Enter the second Number :
67
Before Swapping two variables  FirstNumber : 76 Second Number 67
After  Swapping two variables  FirstNumber : 67 Second Number 76

Swapping Variables with Third Variable

import java.util.Scanner;
class SwappingWithThird
    {
        public static void  main(String san[])
    {
        int firstNumber,secondNumber,temp;
        Scanner in=new Scanner(System.in);// for receiving input from user
   
        System.out.println("Enter the first number:");
        firstNumber=in.nextInt();// get input one
   
        System.out.println("Enter the second Number :");
        secondNumber=in.nextInt(); // get input two
   
        System.out.println("Before Swapping two variables  FirstNumber : "  +firstNumber +" Second Number " +secondNumber);
   
        temp=firstNumber;
        firstNumber=secondNumber;
        secondNumber=firstNumber;
   
        System.out.println("After  Swapping two variables  FirstNumber : "  +firstNumber +" Second Number " +secondNumber);
    }
    }


OUTPUT:

Enter the first number:
6
Enter the second Number :
7
Before Swapping two variables  FirstNumber : 6 Second Number 7
After  Swapping two variables  FirstNumber : 7 Second Number 7

Thread Example

class ThreadExample{
  public static void main(String args[])
   {
        Thread th=new Thread();
      try{
          for(int i=0;i<10;i++)
    {
                System.out.println(" Value "+i);
     th.sleep(2000);
              }
          }
           catch(Exception e)
    {
     System.out.println(" "+e.getMessage());
    }
    }
         }

OUTPUT:

This program will print and pause for one second until next print.

 Value 0
 Value 1
 Value 2
 Value 3
 Value 4
 Value 5
 Value 6
 Value 7
 Value 8
 Value 9

Getting User Name of System

public class UserName
    {
        public static void main(String args[])
    {
        String version=System.getProperty("user.name");
        System.out.println("Currently logged in as "+version);
    }
    }

OUTPUT:

Currently logged in as K SARAVANAN

Ten Multiplicatioin Table

package basics;

public class TenMultiplicationTable {

    public static void main(String[] args) {

        for(int i=1;i<=10;i++)
        {
            for(int j=1;j<=10;j++)
            {
                System.out.print(" "+i*j);
            }
            System.out.println("");
        }
    }

}

Output:

 1 2 3 4 5 6 7 8 9 10
 2 4 6 8 10 12 14 16 18 20
 3 6 9 12 15 18 21 24 27 30
 4 8 12 16 20 24 28 32 36 40
 5 10 15 20 25 30 35 40 45 50
 6 12 18 24 30 36 42 48 54 60
 7 14 21 28 35 42 49 56 63 70
 8 16 24 32 40 48 56 64 72 80
 9 18 27 36 45 54 63 72 81 90
 10 20 30 40 50 60 70 80 90 100

Checking Whether Last Two Numbers Are same or not

import java.util.Scanner;

public class LoneTeen {
public static void loneteen(int a,int b)
    {
   
    if(((a<13)||(a>19)&&(b<=13)||(b>=19))||((b<13)||(b>19)&&(a<=13)&&(a>=19)))
       
                System.out.println(true);
       
        else
            System.out.println(false);
     
        //THIS PROGRAM IS 90 % only correct by k.saravanan
           
    }
    public static void main(String args[])
    {
        Scanner in=new Scanner(System.in);
        System.out.println("enter two integers :");
        int i=in.nextInt();
        int j=in.nextInt();
        loneteen(i,j);
    }

Finding Largest Among Three Numbers

import java.util.Scanner;

public class LargestAmongThree {
public static void bigThree(int a,int b,int c)

    {
        if((a>b)&&(a>c))
        {
            System.out.println(a+" is biggest");
        }
        else if((b>c)&&(b>a))
        {
            System.out.println(b+" is biggest");
        }
        else
            System.out.println(c+" is biggest");
    }
public static void main(String args[])
    {
    System.out.println("enter three integers");
    Scanner in=new Scanner(System.in);
    int i,j,k;
    i=in.nextInt();
    j=in.nextInt();
    k=in.nextInt();
    bigThree(i,j,k);
    }
}

Finding Biggest From Array in Java

import java.util.Scanner;
public class ArrayMaximum {
 public static void main(String args[])
 {
     System.out.println("Enter the limit for array :");
     Scanner in=new Scanner(System.in);
     int limit=in.nextInt();
     int array[]=new int[limit];
     System.out.println("enter the values for array :");
     for(int i=0;i<array.length;i++)
     {
         array[i]=in.nextInt();
     }
         System.out.println("Values of array");
             for(int m:array)
             {
                 System.out.print(" "+m);
             }
             System.out.println();
             int max=array[0];
             for(int j=1;j<array.length;j++){
                 if((array[j])>max)
                  max=array[j];
                  else
                      max=array[0];
                
             }
             System.out.println("biggest Number in this array "+ max);
 }
}

FOR LOOP PROGRAMS

Pattern6.java
import java.util.Scanner;
class Pattern6
    {
        public static void main(String args[])
    {   
        char s='*';
        int j,k;
        Scanner in=new Scanner(System.in);
        System.out.println("Enter the limit :");
        int limit=in.nextInt();
        for(int i=1;i<=limit;i++)
         {
            for(j=1;j<=i;j++)
             {

            System.out.print(s);
            }
            System.out.println();
        }
    }
    }
output:
Enter the limit :
5
*
**
***
****
*****
*****
****
***
**
*



Program for displaying output like this :
Enter the limit :
5
*
**
***
****
*****
Pattern5.java
import java.util.Scanner;
class Pattern6
    {
        public static void main(String args[])
    {   
        char s='*';
        int j,k;
        Scanner in=new Scanner(System.in);
        System.out.println("Enter the limit :");
        int limit=in.nextInt();
       
        for(int i=1;i<=limit;i++)
         {
            for(j=1;j<=i;j++)
             {

            System.out.print(s);
            }
            System.out.println();

       
        }
       
    }
    }
Java Program to display numbers as following :
Print Pattern:
 1  2  3  4  5  6  7  8  9  10
 2  4  6  8  10  12  14  16  18  20
 3  6  9  12  15  18  21  24  27  30
 4  8  12  16  20  24  28  32  36  40
 5  10  15  20  25  30  35  40  45  50
 6  12  18  24  30  36  42  48  54  60
 7  14  21  28  35  42  49  56  63  70
 8  16  24  32  40  48  56  64  72  80
 9  18  27  36  45  54  63  72  81  90
 10  20  30  40  50  60  70  80  90  100
PrintPattern.java
class PrintPattern
    {
        public static void main(String args[])
    {
        int i,j;       
            for(i=1;i<=10;i++)
                {
                    for(j=1;j<=10;j++)
                   
                        {
                          System.out.print("  "+ i*j);
                        }
                System.out.println();
                }
    }
    }