/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package pruebagit;

/**
 *
 * @author alumno2015
 */
public class PruebaGit {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("2 + 2 = 4");
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package pruebagit;

/**
 *
 * @author alumno2015
 */
public class PruebaGit {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("2 + 2 = 4");
        System.out.println("Hola bebes")
    }
    
}

Update PruebaGit.java