问如何使用java代码在windows(任务管理器->application)中获取打开的应用程序列表？

EN

powershell -command "get-Process  | format-table mainwindowtitle"

public String[] getEnginesFromTaskManger()
{


    // listCommand is a command to get all opened CMD program like (batches,.......) 
    // you can test it in your CMD as powershell -command "get-Process cmd | format-table mainwindowtitle"
    String listCommand = "powershell -command \"get-Process cmd | format-table mainwindowtitle\"";
    try
    {
        String line;


        // since line length for powershell output is 79
        int outLen = 79;



        Process p = Runtime.getRuntime().exec(listCommand);
        BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
        line = input.readLine();
        System.out.println("line: " + line + "\t" + line.length());



        EnginesListFromTaskManeger = new ArrayList<String>();
        int i = 0;

        /*
         I used this outLen > 0 condition to make sure that this method will close automatically 
         in case of no running CMD applications and you running this from your IDE's (Eclipse, Netbeans , ......) 
         the powershell will not stopped so i used it. */
        while(line != null && outLen > 0)
        {
            System.out.println("line: " + line + "\t" + line.length());

            line = input.readLine().trim().toLowerCase();
            outLen = line.length();

            EnginesListFromTaskManeger.add(i, line);

            System.out.println(EnginesListFromTaskManeger.get(i));
            // EnginesListFromTaskManeger[i]=(String)input.readLine().trim();
            // System.out.println("EnginesListFromTaskManeger"+ EnginesListFromTaskManeger[i]);
            i++;
        }
        input.close();
    }catch(Exception err)
    {
        err.printStackTrace();
    }

    ListFromTaskManeger = new String[EnginesListFromTaskManeger.size()];
    ListFromTaskManeger = EnginesListFromTaskManeger.toArray(ListFromTaskManeger);

    return ListFromTaskManeger;

}