好吧，如果我答对了你的问题，这里有一个结果的方法。我认为这将是独立于平台的。

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

    private static Process process;

    public static void main(String[] args) {

        runCommand();
        getErrorMessage();

    }

    /**
     * This method executes/runs the commands
     */
    private static void runCommand()
    {
        File file = new File("D:\\\\test.java");

        String changeDirectory = "cmd start cmd.exe /c cd D:\\";
        String compile = " && javac D:\\test.java";
        String run = " && java "+file.getName().replace(".java","");
        String command = changeDirectory + compile + run;

        try {
               process = Runtime.getRuntime().exec(command);
        }catch (IOException e){}
    }

    /**
     * This method will get the errorStream from process
     * and output it on the console.
     */
    private static void getErrorMessage()
    {  

         try (BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream())))
         {
             String line;

             if(errorReader.readLine() != null)
                while ((line = errorReader.readLine()) != null)
                    System.out.println(line);         //display error message

         }catch (IOException e){}
     }

}