Java获取Jar包途径

                                                              public class JarUtil                                {                                    private String jarName;                                    private String jarPath;                                                                             public JarUtil(Class clazz)                                    {                                        String path =                                 clazz.getProtectionDomain().getCodeSource().getLocation()                                                .getFile();                                        try                                        {                                            path =                                 java.net.URLDecoder.decode(path, "UTF-8");                                        }                                        catch                                 (java.io.UnsupportedEncodingException e)                                        {                                            e.printStackTrace();                                        }                                        java.io.File jarFile = new                                 java.io.File(path);                                        this.jarName = jarFile.getName();                                        java.io.File parent =                                 jarFile.getParentFile();                                        if (parent != null)                                        {                                            this.jarPath =                                 parent.getAbsolutePath();                                        }                                    }                                    /**                                     * 获取Class类所在Jar包的名称                                     *                                      * @return Jar包名 (例如：C:\temp\demo.jar 则返回                                 demo.jar )                                     */                                    public String getJarName()                                    {                                        try                                        {                                            return                                 java.net.URLDecoder.decode(this.jarName,                                 "UTF-8");                                        }                                        catch                                 (java.io.UnsupportedEncodingException e)                                        {                                            e.printStackTrace();                                        }                                        return null;                                    }                                    /**                                     * 取得Class类所在的Jar包路径                                     *                                      * @return 返回一个路径 (例如：C:\temp\demo.jar 则返回                                 C:\temp )                                     */                                    public String getJarPath()                                    {                                        try                                        {                                            return                                 java.net.URLDecoder.decode(this.jarPath,                                 "UTF-8");                                        }                                        catch                                 (java.io.UnsupportedEncodingException e)                                        {                                            e.printStackTrace();                                        }                                        return null;                                    }                                    public static void main(String[] args)                                 throws Exception                                    {                                        JarUtil ju = new JarUtil(JarUtil.class);                                        System.out.println("Jar name: " +                                 ju.getJarName());                                        System.out.println("Jar path: " +                                 ju.getJarPath());                                    }                                }