How to read a file as InputStream from the classpath without using any third party library?

ReadFromClasspath.java

package com.khotyn.test;

import java.io.InputStream;

/**
 * Read a file from the classpath without using any third party library.
 * 
 * @author khotyn 2011-12-1 下午5:03:21
 */
public class ReadFromClasspath {

    public static void main(String[] args) {
        InputStream is = ReadFromClasspath.class.getClassLoader().getResourceAsStream("SomeFile");
    }
}