Java 中獲取當前程序的進程

Java 中獲取進程 ID 的方法如下, 注意是進程, 不是線程

public static void main(String[] args) {
    System.out.println("==== APP  STARTED ====");
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    String name = runtime.getName();
    System.out.println(name);
    System.out.println("Process ID: " + name.substring(0, name.indexOf("@")));
}

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獲取線程ID的方法:

Thread thread = Thread.currentThread();
System.out.println("Thread ID: " + thread.getId());