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running a java program using another java program

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can any one give me idea of how to run java program using another java program
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hi prabahar,

if you have an entire 'program' inside the constructor of an object, this 'program' can be run with one line of code from another jave 'program'. below is source code for 2 simple 'programs', Program1.java & Program2.java. The line
new Program2();
launches Program2 from Program1. is this what you had in mind?

import Program2;

public class Program1 {

  public static void main(String args[]) {
	System.out.println( " starting program 1 " );
	new Program2();
	System.out.println( " program 1 done " );



public class Program2 {

  public Program2() {
	System.out.println( "   starting program 2 " );
	System.out.println( "   program 2 done " );


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