String replaceAll()

package com.javapuzzlers;

public class Me {
    public static void main(String[] args){
        /////////////////////.class
        System.out.println(Me.class.getName().replaceAll(".","/") + ".class");
       
        //com/javapuzzlers/Me.class
        System.out.println(Me.class.getName().replaceAll("\\.","/") + ".class");

    }
}