Windows环境下Java获取指定进程的句柄总数

public static int getHandleCount() throws IOException, InterruptedException {
    String command = "wmic process where \"name='java.exe'\" Get HandleCount /value";
    String result = "";
    Process process = Runtime.getRuntime().exec(command);
    BufferedInputStream bis = new BufferedInputStream(process.getInputStream());
    BufferedReader br = new BufferedReader(new InputStreamReader(bis));
    String line;
    while ((line = br.readLine()) != null) {
        result += line;
    }
    //等待执行完毕
    process.waitFor();
    //判断exit code
    if (process.exitValue() != 0) {
        System.out.println("getHandleCount exitValue() != 0");
    }
    bis.close();
    br.close();
    String count = result.replaceAll("\\D", "");
    return count.equals("") ? -1 : Integer.parseInt(count);
}