Download Java Programs Examples new 1

Java New Demo progs 2014 by Dr. M V S Peri Sastry
If no arguments are there, In Eclipse Run As -> Java Application
But if you have to input arguments,
In Eclipse Run As -> Run Configurations -> arguments tab type-in args -> Run
1)
public class ja1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Hello Rahul Welcome to Java");
}
}
------------------------------------------------------------------------------2)
public class ABCD {
public static void main ( String[] Args )
{
int n=3;
System.out.println ("num=" + n + " n cube=" + n*n*n );
}
}
----------------------------------------------------------------------3)
import javax.swing.JOptionPane;
public class peri_swing_addition {
public static void main(String args[] ) {
// TODO Auto-generated method stub
String fno, sno;
int ifno, isno, isum;
fno = JOptionPane.showInputDialog( "Peri Eclipse Enter first integer:");
sno = JOptionPane.showInputDialog( "Peri Eclipse Enter second integer:");
ifno = Integer.parseInt(fno);
isno = Integer.parseInt(sno);
isum= ifno + isno;
JOptionPane.showMessageDialog(
null, "The Sum Is : " + isum,
"RESULT PANE", JOptionPane.PLAIN_MESSAGE );
System.exit(0);
}
}
-------------------------------------------------------------------4)
public class ja1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Hello Rahul Welcome to Java");
}
}
-----------------------------------------------------------------------------------------5)
public class helloWithArgszero {
// hello program with Args[0]
// in eclipse run as, configurations, arguments tab, SASTRYGAARU
public static void main(String[] args) {
// TODO Auto-generated method stub
if (args[0].equals("")) System.out.println("Hello Peri Java ");
else
System.out.println("Hello Peri Java " + args[0]);
}
}
---------------------------------------------------------------------------------------------------6)
public class peri1withargsnum {
//
peri1 num program with args [] and try catch
public static void main(String[] args) {
// TODO Auto-generated method stub
int n = 3;
try{
int n2= Integer.parseInt(args[0]);
System.out.println("num=" + n2 + " n2 square=" + n2*n2 );
}
catch (
NumberFormatException nfe){
System.out.println("input Number in error Sir " + nfe);
}
finally {
System.out.println("num=" + n + " n square=" + n*n );
}
}
}
----------------------------------------------------------------------7)
public class peri1withtrycatch {
//
public static void main(String[] args) {
peri1 num program with args [] and try catch
// TODO Auto-generated method stub
int n = 3;
try{
int n2= Integer.parseInt(args[0]);
System.out.println("num=" + n2 + " n2 square=" + n2*n2 );
}
catch (
Exception nfe){
System.out.println("input Number in error " + nfe);
}
System.out.println("num=" + n + " n square=" + n*n );
}
}
------------------------------------------------------------------------8) java program example: use of Scanner class from util package and
System.out.printf statement. Use only with jdk1.7 USE CMD AND COMPILE AND
TEST (NOT Eclipse)
import java.util.Scanner;
public class Additionscan {
public static void main(String[] args) {
// TODO Auto-generated method stub
//
String fno, sno;
int
ifno, isno, isum;
Scanner input = new Scanner( System.in );
System.out.println( "Enter first integer:");
ifno = input.nextInt();
System.out.println( "Enter second integer:");
isno = input.nextInt();
//
ifno = Integer.parseInt(fno);
//
isno = Integer.parseInt(sno);
//
isum= ifno + isno;
isum= ifno + isno;
System.out.printf("The Sum Is : %d\n" , isum );
input.close();
//
System.exit(0);
}
}
---------------------Steps for Compilation and testing of above java program Additionscan
--------------------------------------------in cmd do as below
-----------------------------------Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Peri Sastry>cd\
C:\>cd Program Files
C:\Program Files>cd java
C:\Program Files\Java>cd jdk1.7.0_45
C:\Program Files\Java\jdk1.7.0_45>cd bin
C:\Program Files\Java\jdk1.7.0_45\bin>javac c:\jmvsp\Additionscan.java
C:\Program Files\Java\jdk1.7.0_45\bin>java -cp c:\jmvsp Additionscan
Enter first integer:
12
Enter second integer:
23
The Sum Is : 35
C:\Program Files\Java\jdk1.7.0_45\bin>