一个可能的解决方案可能是探索 proc 条目。实际上，这就是 top 的方式，其他人可以访问正在运行的进程列表。

A possible solution might be explorer the proc entries. Indeed, this is how top and others gain access to the list of running process.

我不完全确定这是你想要的，但它可以给你一些线索：

I'm not completely sure if this is what your looking for, but it can give you some clue:

    import java.awt.Desktop;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStreamReader;

    public class OpenFolder {
        public static void main(String[] args) throws IOException {
            System.out.println(findProcess("process_name_here"));
        }

        public static boolean findProcess(String processName) throws IOException {
            String filePath = new String("");
            File directory = new File("/proc");
            File[] contents = directory.listFiles();
            boolean found = false;
            for (File f : contents) {
                if (f.getAbsolutePath().matches("\\/proc\\/\\d+")) {
                    filePath = f.getAbsolutePath().concat("/status");
                    if (readFile(filePath, processName))
                        found = true;
                }
            }
            return found;
        }

        public static boolean readFile(String filename, String processName)
        throws IOException {
            FileInputStream fstream = new FileInputStream(filename);
            BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
            String strLine;
            strLine = br.readLine().split(":")[1].trim();
            br.close();
            if (strLine.equals(processName))
                return true;
            else
                return false;
        }
    }