Test of the Java Skill(2)

麟麟enjoy

麟麟enjoy

2016-02-19 18:40

今天图老师小编给大家精心推荐个Test of the Java Skill(2)教程,一起来看看过程究竟如何进行吧!喜欢还请点个赞哦~


     Question 9:
     What code placed after the comment:
       // Start For loop
     would populate the elements of the array ia[] with values of the variables i ?
  
     public class Lin{
     public static void main(String argv[]){
     Lin l = new Lin();
     l.amethod();
     }
  
     public void amethod(){
     int ia[] = new int[4];
     // Start For loop
     {
     ia[i] = i;
     System.out.println(ia[i]);
     }
     }
     }
  
     A. for(int i=0; i
  
     B. for (int i=0; i
  
     C. for(int i=0; i4; i++)
  
     D. for(int i=0; i
  
     Question 10:
     Consider the following code:
     Integer s = new Integer(9);
     Integer t = new Integer(9);
     Long u = new Long(9);
     Which test would return true?
    A. (s==u)
  
     B. (s==t)
  
     C. (s.equals(t))
  
     D. (s.equals(9))
  
     E. (s.equals(new Integer(9))
  
     Question 11:
     Which of the following is sUCcessfully create an instance of the Vector class and add an element?
  
     A. Vector v = new Vector(99);
     v[1]=99;
  
     B. Vector v = new Vector();
     v.addElement(99);
  
     C. Vector v = new Vector();
     v.add(99);
  
     D. Vector v = new Vector(100);
     v.addElement(“99”);
  
     Question 12:
     What will happen when you attempt to compile and run the following code?
  
     class Base{
     private void amethod(int iBase){
     System.out.println(“Base.amethod”);
     }
     }

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   class Over extends Base{
     public static void main(String argv[]){
     Over o = new Over();
     int iBase=0;
     o.amethod(iBase);
     }
  
     public void amethod(int iOver){
     System.out.println(“Over.amethod”);
     }
     }
  
     A. Compile time error complaining that Base.amethod is private
  
     B. Runtime error complaining that Base.amethod is private
  
     C. Output of Base.amethod
  
     D. Output of Over.amethod
  
     Question 13:
     What will happen if you try to compile and run the following code?
  
     public class MyClass
     public static void main(String arguments[]){
     amethod(arguments);
     }
  
     public void amethod(String[] arguments)
     System.out.println(arguments);
     System.out.println(arguments[1]);
     }
     }
  
     A. Error can't make static reference to void amethod
  

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