初探java解压缩zip文件

public static void main(String[] args) {
		// TODO Auto-generated method stub
		String path = "c:\\a.zip";
		try {
			ZipFile z = new ZipFile(new File(path));
			System.out.println("path : " +z.getName() + " files : " + z.size());
			Enumeration files = z.entries();
			while(files.hasMoreElements()){
				ZipEntry file = (ZipEntry) files.nextElement();
				InputStream in = z.getInputStream(file);
				FileOutputStream out = new FileOutputStream("c:\\test\\"+file.getName());
				int a=in.available();
				byte[] str=new byte[a];
				while((a=in.read(str))!=-1){
					out.write(str, 0, str.length);
				}
				in.close();
				out.close();
			}
		} catch (ZipException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}

    解析jar文件同理，通过阅读api ,不难发现 jarFile 继承了zipfile 然后其他方法雷同..  Manifest   jar Mainclass信息