如何获取Java子进程的pid?
问题描述：
如果我们使用 Runtime.exec 创建一个新的子进程:
If we use Runtime.exec to create a new subprocess:
Process exec(String command) Executes the specified string command in a separate process.
如何获取已创建进程的值?
How to get the value of the created process?
答
直到 Java 8(包含)，你必须使用 解决方法.
Until Java 8 (included), you have to use workarounds.
从 Java 9 开始，有一个新的 Process 类中的getPid 方法.
From Java 9 onwards, there is a new getPid method in the Process class.