使用标准的Java API是不可能做到的（请参阅文章末尾的edit，了解对此进行更改的更新）。您将需要一些不同的本地代码。使用JNA时，我使用了如下代码：

public class Win32Process
{
    WinNT.HANDLE handle;
    int pid;

    Win32Process (int pid) throws IOException
    {
        handle = Kernel32.INSTANCE.OpenProcess ( 
                0x0400| /* PROCESS_QUERY_INFORMATION */
                0x0800| /* PROCESS_SUSPEND_RESUME */
                0x0001| /* PROCESS_TERMINATE */
                0x00100000 /* SYNCHRONIZE */,
                false,
                pid);
        if (handle == null) 
            throw new IOException ("OpenProcess failed: " + 
                    Kernel32Util.formatMessageFromLastErrorCode (Kernel32.INSTANCE.GetLastError ()));
        this.pid = pid;
    }

    @Override
    protected void finalize () throws Throwable
    {
        Kernel32.INSTANCE.CloseHandle (handle);
    }

    public void terminate ()
    {
        Kernel32.INSTANCE.TerminateProcess (handle, 0);
    }

    public List<Win32Process> getChildren () throws IOException
    {
        ArrayList<Win32Process> result = new ArrayList<Win32Process> ();
        WinNT.HANDLE hSnap = KernelExtra.INSTANCE.CreateToolhelp32Snapshot (KernelExtra.TH32CS_SNAPPROCESS, new DWORD(0));
        KernelExtra.PROCESSENTRY32.ByReference ent = new KernelExtra.PROCESSENTRY32.ByReference ();
        if (!KernelExtra.INSTANCE.Process32First (hSnap, ent)) return result;
        do {
            if (ent.th32ParentProcessID.intValue () == pid) result.add (new Win32Process (ent.th32ProcessID.intValue ()));
        } while (KernelExtra.INSTANCE.Process32Next (hSnap, ent));
        Kernel32.INSTANCE.CloseHandle (hSnap);
        return result;
    }

}
此代码使用标准JNA库中未包含的以下JNA声明：

public interface KernelExtra extends StdCallLibrary {

    /**
     * Includes all heaps of the process specified in th32ProcessID in the snapshot. To enumerate the heaps, see
     * Heap32ListFirst.
     */
    WinDef.DWORD TH32CS_SNAPHEAPLIST = new WinDef.DWORD(0x00000001);

    /**
     * Includes all processes in the system in the snapshot. To enumerate the processes, see Process32First.
     */
    WinDef.DWORD TH32CS_SNAPPROCESS  = new WinDef.DWORD(0x00000002);

    /**
     * Includes all threads in the system in the snapshot. To enumerate the threads, see Thread32First.
     */
    WinDef.DWORD TH32CS_SNAPTHREAD   = new WinDef.DWORD(0x00000004);

    /**
     * Includes all modules of the process specified in th32ProcessID in the snapshot. To enumerate the modules, see
     * Module32First. If the function fails with ERROR_BAD_LENGTH, retry the function until it succeeds.
     */
    WinDef.DWORD TH32CS_SNAPMODULE   = new WinDef.DWORD(0x00000008);

    /**
     * Includes all 32-bit modules of the process specified in th32ProcessID in the snapshot when called from a 64-bit
     * process. This flag can be combined with TH32CS_SNAPMODULE or TH32CS_SNAPALL. If the function fails with
     * ERROR_BAD_LENGTH, retry the function until it succeeds.
     */
    WinDef.DWORD TH32CS_SNAPMODULE32 = new WinDef.DWORD(0x00000010);

    /**
     * Includes all processes and threads in the system, plus the heaps and modules of the process specified in th32ProcessID.
     */
    WinDef.DWORD TH32CS_SNAPALL      = new WinDef.DWORD((TH32CS_SNAPHEAPLIST.intValue() |
            TH32CS_SNAPPROCESS.intValue() | TH32CS_SNAPTHREAD.intValue() | TH32CS_SNAPMODULE.intValue()));

    /**
     * Indicates that the snapshot handle is to be inheritable.
     */
    WinDef.DWORD TH32CS_INHERIT      = new WinDef.DWORD(0x80000000);

    /**
     * Describes an entry from a list of the processes residing in the system address space when a snapshot was taken.
     */
    public static class PROCESSENTRY32 extends Structure {

        public static class ByReference extends PROCESSENTRY32 implements Structure.ByReference {
            public ByReference() {
            }

            public ByReference(Pointer memory) {
                super(memory);
            }
        }

        public PROCESSENTRY32() {
            dwSize = new WinDef.DWORD(size());
        }

        public PROCESSENTRY32(Pointer memory) {
            useMemory(memory);
            read();
        }

        /**
         * The size of the structure, in bytes. Before calling the Process32First function, set this member to
         * sizeof(PROCESSENTRY32). If you do not initialize dwSize, Process32First fails.
         */
        public WinDef.DWORD dwSize;

        /**
         * This member is no longer used and is always set to zero.
         */
        public WinDef.DWORD cntUsage;

        /**
         * The process identifier.
         */
        public WinDef.DWORD th32ProcessID;

        /**
         * This member is no longer used and is always set to zero.
         */
        public BaseTSD.ULONG_PTR th32DefaultHeapID;

        /**
         * This member is no longer used and is always set to zero.
         */
        public WinDef.DWORD th32ModuleID;

        /**
         * The number of execution threads started by the process.
         */
        public WinDef.DWORD cntThreads;

        /**
         * The identifier of the process that created this process (its parent process).
         */
        public WinDef.DWORD th32ParentProcessID;

        /**
         * The base priority of any threads created by this process.
         */
        public WinDef.LONG pcPriClassBase;

        /**
         * This member is no longer used, and is always set to zero.
         */
        public WinDef.DWORD dwFlags;

        /**
         * The name of the executable file for the process. To retrieve the full path to the executable file, call the
         * Module32First function and check the szExePath member of the MODULEENTRY32 structure that is returned.
         * However, if the calling process is a 32-bit process, you must call the QueryFullProcessImageName function to
         * retrieve the full path of the executable file for a 64-bit process.
         */
        public char[] szExeFile = new char[WinDef.MAX_PATH];
    }

    // the following methods are in kernel32.dll, but not declared there in the current version of Kernel32:

    /**
     * Takes a snapshot of the specified processes, as well as the heaps, modules, and threads used by these processes.
     *  
     * @param dwFlags
     *   The portions of the system to be included in the snapshot.
     * 
     * @param th32ProcessID
     *   The process identifier of the process to be included in the snapshot. This parameter can be zero to indicate
     *   the current process. This parameter is used when the TH32CS_SNAPHEAPLIST, TH32CS_SNAPMODULE,
     *   TH32CS_SNAPMODULE32, or TH32CS_SNAPALL value is specified. Otherwise, it is ignored and all processes are
     *   included in the snapshot.
     *
     *   If the specified process is the Idle process or one of the CSRSS processes, this function fails and the last
     *   error code is ERROR_ACCESS_DENIED because their access restrictions prevent user-level code from opening them.
     *
     *   If the specified process is a 64-bit process and the caller is a 32-bit process, this function fails and the
     *   last error code is ERROR_PARTIAL_COPY (299).
     *
     * @return
     *   If the function succeeds, it returns an open handle to the specified snapshot.
     *
     *   If the function fails, it returns INVALID_HANDLE_VALUE. To get extended error information, call GetLastError.
     *   Possible error codes include ERROR_BAD_LENGTH.
     */
    public WinNT.HANDLE CreateToolhelp32Snapshot(WinDef.DWORD dwFlags, WinDef.DWORD th32ProcessID);

    /**
     * Retrieves information about the first process encountered in a system snapshot.
     *
     * @param hSnapshot A handle to the snapshot returned from a previous call to the CreateToolhelp32Snapshot function.
     * @param lppe A pointer to a PROCESSENTRY32 structure. It contains process information such as the name of the
     *   executable file, the process identifier, and the process identifier of the parent process.
     * @return
     *   Returns TRUE if the first entry of the process list has been copied to the buffer or FALSE otherwise. The
     *   ERROR_NO_MORE_FILES error value is returned by the GetLastError function if no processes exist or the snapshot
     *   does not contain process information.
     */
    public boolean Process32First(WinNT.HANDLE hSnapshot, KernelExtra.PROCESSENTRY32.ByReference lppe);

    /**
     * Retrieves information about the next process recorded in a system snapshot.
     *
     * @param hSnapshot A handle to the snapshot returned from a previous call to the CreateToolhelp32Snapshot function.
     * @param lppe A pointer to a PROCESSENTRY32 structure.
     * @return
     *   Returns TRUE if the next entry of the process list has been copied to the buffer or FALSE otherwise. The
     *   ERROR_NO_MORE_FILES error value is returned by the GetLastError function if no processes exist or the snapshot
     *   does not contain process information.
     */
    public boolean Process32Next(WinNT.HANDLE hSnapshot, KernelExtra.PROCESSENTRY32.ByReference lppe);

}

然后，您可以使用'getChildren（）'方法来取得子系的清单、终止父系，然后递归地终止子系。
我相信您可以使用反射来增加java.lang.Process的PID（不过，我还没有这样做;我转而使用Win32 API自己创建进程，以便对它有更多的控制）。
所以把它放在一起，你需要这样的东西：

int pid = (some code to extract PID from the process you want to kill);
Win32Process process = new Win32Process(pid);
kill(process);

public void kill(Win32Process target) throws IOException
{
   List<Win32Process> children = target.getChildren ();
   target.terminateProcess ();
   for (Win32Process child : children) kill(child);
}

编辑

事实证明Java API的这个缺点在Java 9中得到了修复。请参阅Java 9文档here的预览（如果没有加载正确的页面，您需要查看java.lang.ProcessHandle接口）。对于上述问题的要求，代码现在看起来如下所示：

Process child = ...;
kill (child.toHandle());

public void kill (ProcessHandle handle)
{
    handle.descendants().forEach((child) -> kill(child));
    handle.destroy();
}

(Note这还没有经过测试-我还没有转换到Java 9，但是我正在积极地阅读有关它的信息）

如果您控制子进程和批处理文件，另一种解决方案是让子进程创建一个线程，打开ServerSocket，侦听到它的连接，如果它收到正确的密码，则调用System.exit（）。
如果您需要多个并发示例，则可能会出现复杂情况;这时您需要某种方式来为它们分配端口号。

您无法使用标准的Java API for Java 8或更低版本来执行此操作。
方法1
如果您有Java 9或更高版本，则可以使用ProcessHandle
方法二
在Java中，将taskkill与/t配合使用，将/f标志与Runtime.getRuntime().exec()或ProcessBuilder类配合使用。
/f --〉强制终止/t --〉终止此进程生成的所有子进程。

ProcessBuilder pb1 = new ProcessBuilder("cmd.exe","/c","taskkill /f /t /pid "+p.pid());
Process p1 = pb1.start();

详细分析

我已经使用Process Builder在Java代码中完成了它。
下面是一个示例批处理文件，它在Windows中启动另一个Powershell进程，每秒从1到20打印计数器，这是一个子进程：

@echo off
echo starting
powershell -command " for ($count=1;$count -le 20;$count++) { Start-Sleep 1; Write-Output $count }"
echo success

ps：您需要将InputStream重定向到stdout以获得终端上的输出。
使用process对象的destroy()方法只终止该进程，而不终止子/孙进程。
您可以在终端上运行tasklist，然后找到powershell.exe，在运行java程序之前和之后进行比较，以查看子进程是否仍在运行。
要将子进程与父进程沿着删除，请使用ProcessBuilder启动一个新进程，如下所示，其中p是您要删除的进程：

ProcessBuilder pb1 = new ProcessBuilder("cmd.exe","/c","taskkill /f /t /pid "+p.pid());
Process p1 = pb1.start();

你不能使用JDK为窗口删除进程树。你需要依赖WinAPI。你必须求助于本机命令或JNI库，所有这些都是平台相关的，比纯Java解决方案复杂。
示例链接JNI Example

这里有另一个选择。使用这个powershell脚本来执行你的bat脚本。当你想杀死树时，终止你的powershell脚本的进程，它会自动在它的子进程上执行taskkill。我让它调用taskkill两次，因为在某些情况下它不会接受第一次尝试。

Param(
    [string]$path
)

$p = [Diagnostics.Process]::Start("$path").Id

try {
    while($true) {
        sleep 100000
    }
} finally {
    taskkill /pid $p
    taskkill /pid $p
}

在java 9中，杀死主进程会杀死整个进程树。你可以这样做：

Process ptree = Runtime.getRuntime().exec("cmd.exe","/c","xyz.bat");
// wait logic
ptree.destroy();

请查看此blog并查看***处理流程树***示例。