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Tuesday, 24 June 2014

Run application using java

You can run application using java by passing command to exec method of java.lang.Runtime object. Here is a sample code for opening calculator in java on Windows or Linux(Ubuntu).

save the below code with name RunApplication.java

 
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package com.trickyjava.general;

public class RunApplication {

 public static void main(String[] args) {
  try {
   String command = getCalculatorCommand();
   if (null == command) {
    throw new Exception("Command Not found");
   }
   System.out.println("Opening Calculator");
   Runtime runTime = Runtime.getRuntime();
   Process process = runTime.exec(command);
   Thread.sleep(5000);
   System.out.println("Closing Calculator");
   process.destroy();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 public static String getCalculatorCommand() {
  String OS = System.getProperty("os.name").toLowerCase();
  if (OS.startsWith("windows")) {
   return "calc";
  } else if (OS.startsWith("linux")) {
   return "gcalctool";
  }
  return null;
 }
}

its method getCalculatorCommand() is used to find-out the Operating Specific command. We have made compatible for Windows and Linux. 

 Output of the following code:
Opening Calculator



Closing Calculator

5 Tricky {Java}: Run application using java You can run application using java by passing command to exec method of java.lang.Runtime object. Here is a sample code for opening calcu...

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