Groovy introduction

ExecuteProcess.java

package com.learn.first;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class ExecuteProcess {
	public static void main(String[] args) {
		try
		{
			Process proc=Runtime.getRuntime().exec("cmd /C dir");
			BufferedReader br=new BufferedReader(new InputStreamReader(proc.getInputStream()));
			String line;
			while((line=br.readLine())!=null)
			{
				System.out.println(line);
			}
		}
		catch(IOException iox)
		{
			iox.printStackTrace();
		}
	}
}

HelloWorld.groovy

package com.learn.first

class HelloWorld {
  static void main(args)
  {
   println "hello world";
  }
}

HelloWorld.java

package com.learn.first

public class HelloWorld {
  public static void main(String args[])
  {
  System.out.println("hello world");
  }
}

HelloWorlParam.groovy

package com.learn.first

class HelloWorlParam {
  static void main(args)
  {
   println " " + args;
  }
}