SCJP題庫第106題

Given classes defined in two different files:

1. package util;

2. public class BitUtils{

3.   public static void process(byte[] b){/* more code here */}

4. }

1. package app;

2. public class SomeApp{

3.   public static void main(String[] args){

4.     byte[] bytes = new byte[256];

5.     //insert code here

6.   }

7. }

What is required at line 5 in class SomeApp to use the process method of BitUtils?

 

 

A. process(bytes);

B. BitUtils.process(bytes);

C. util.BitUtils.process(bytes);

D. SomeApp cannot use methods in BitUtils.

E. import util.BitUtils.*; process(bytes);

 

Ans: C

 

解說:

SomeApp在app套件下， BitUtils在util套件下， SomeApp要存取BitUtils要先套BitUtils的套件名稱util， process方法是BitUtils的類別方法，所以直接用util.BitUtils.process表示。