单项选择题 Given the command line java Pass2 and：  public class Pass2 {  public void main（String [] args） {  int x=6；  Pass2 p = new Pass2（）；  p.doStuff（x）；  System.out.print（” main x = “+ x）； }  void doStuff（int x） {  System.out.print（” doStuffx = “+ x++）；  }  }  What is the result？（）

单项选择题 Given a correctly compiled class whose source code is：  package com.sun.sjcp；  public class Commander {  public static void main（String[] args） {  // more code here  }  }  Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains “.“ （current directory）. Which command line correctly runs Commander？（）

单项选择题 11. public class Counter {  12. public static void main（String[] args） {  13. int numArgs = /* insert code here */；  14. }  15. }  and the command line： java Counter one fred 42 Which code， inserted at line 13， captures the number of arguments passed into the program？（）