In Place Array Reverse

inplace-reverse.java

package com.art.samples.inplace_string_reverse;
/**
 * Hello world!
 *
 */
public class App 
{
    /**
     * @param args
     */
    public static void main( String[] args )
    {
        char[] in = {'1','2','3','4'};
        System.out.println(in.length);
        
       for(int i=0;i<in.length/2;i++){
    	   char buff = in[i];
    	   in[i] = in[in.length-1-i];
    	   in[in.length-1-i] = buff;
       }
       
       System.out.println(in);
    }
}