How to run external application from java

Java Runtime that allows the application to interface with the environment in which the application is running. The getRunTime().exec() method allows to execute external application from java.

Example

package com.pretech;
import java.io.IOException;
public class JavaRunTimeExample {
	public static void main(String[] args) {
		try {
			Runtime.getRuntime().exec("notepad.exe c:/pretech.txt");
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

Output