package org.oklab;

import java.util.*;
import java.util.jar.*;
import java.io.IOException;

/**
 * 1.Systemプロパティのsun.boot.class.pathからライブラリの文字列取得
 * 2.ライブラリを<code>StringTokenizer</code>で解析
 * 3.表示
 * 
 * @author satoshiokita
 * @version 取り合えず動く
 */
public class Gets {

	public static void main(String[] args) {
		Gets g = new Gets();
		g.doMethod();

	}

    private void doMethod() {
		Properties properties = System.getProperties();
		Enumeration enum = properties.propertyNames();
		while (enum.hasMoreElements()) {
			 String key = (String)enum.nextElement();
			 //System.out.println(key + ":" + properties.getProperty(key)
);
			 
			 if (key.equals("sun.boot.class.path")) {
				parse(properties.getProperty(key));
			 }
		}
    }
	
	private void parse(String value) {
		System.out.println(value);
		StringTokenizer st = new StringTokenizer(value, ";");
		while(st.hasMoreTokens()) {
			String lib = st.nextToken();
			//System.out.println(lib);
			viewClass(lib);
		}
		
	}
	
	private void viewClass(String value) {
		try {
			JarFile jar = new JarFile(value);
			Enumeration enum = jar.entries();
			while (enum.hasMoreElements()) {
					JarEntry j = (JarEntry)enum.nextElement();
					System.out.println(j);
			}
		} catch (IOException ex) {
			ex.printStackTrace();
		} catch (SecurityException ex) {
			ex.printStackTrace();
		}

	}
}