java 实现 rar压缩和解压

public class RarToFile {

	/*  
	 * cmd 压缩与解压缩命令  
	 */
	private static String rarCmd = "C:\\Program Files\\WinRAR\\Rar.exe a ";
	private static String unrarCmd = "C:\\Program Files\\WinRAR\\UnRar x ";

	public static void main(String[] args) throws Exception {
		RARFile("RARRemote", "E:\\RemoteXml.xml", "E:\\");
	}

	/**  
	 * 将1个文件压缩成RAR格式  
	 * rarName 压缩后的压缩文件名(不包含后缀)  
	 * fileName 需要压缩的文件名(必须包含路径)  
	 * destDir 压缩后的压缩文件存放路径  
	 */
	public static void RARFile(String rarName, String fileName, String destDir) {
		rarCmd += destDir + rarName + ".rar " + fileName;
		try {
			Runtime rt = Runtime.getRuntime();
			Process p = rt.exec(rarCmd);
			if (p.waitFor() == 0) {
				System.out.println("压缩成功");
			}
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
	}

	/**  
	 * 将1个RAR文件解压  
	 * rarFileName 需要解压的RAR文件(必须包含路径信息以及后缀)  
	 * destDir 解压后的文件放置目录  
	 */
	public static void unRARFile(String rarFileName, String destDir) {
		unrarCmd += rarFileName + " " + destDir;
		try {
			Runtime rt = Runtime.getRuntime();
			Process p = rt.exec(unrarCmd);
			if (p.waitFor() == 0) {
				System.out.println("解压成功");
			}
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
	}

}