java获取现阶段进程ID

java获取当前进程ID
 /**
     * 获取当前进程ID
     */
    private static Integer getCurrentThreadID()
    {
        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        String name = runtime.getName();
        return Integer.parseInt(name.substring(0, name.indexOf("@")));
    }