java解压.zip或.jar文件

java解压.zip或.jar文件 解压.zip或.jar文件(2007-06-18 10:47:12) import java.io.*; import java.util.zip.*; public class ZipFileList { public static void main(String[] args) { extZipFileList("E:/software/lumaqq_2004-win32_x86_with_jre.zip", "E:/software/ "); } private static void extZipFileList(String zipFileName, String extPlace) { try { ZipInputStream in = new ZipInputStream(new FileInputStream( zipFileName)); ZipEntry entry = null; while ((entry = in.getNextEntry()) != null) { String entryName = entry.getName(); if (entry.isDirectory()) { File file = new File(extPlace entryName); file.mkdirs(); System.out.println("创建文件夹:" entryName); } else { FileOutputStream os = new FileOutputStream(extPlace entryName); // Transfer bytes from the ZIP file to the output file byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { os.write(buf, 0, len); } os.close(); in.closeEntry(); } } } catch (IOException e) { } System.out.println("解压文件成功"); } } 但是不知道怎么才能解压.rar文件,求助中.......?????