Go语言视频零基础入门到精通

javalearner

JNDI 和目录服务初步教学课件，PPT格式。
苏州职业大学计算机与电子工程系 曾海 2004-9  
    考考你(23):
   

1. What is the result of attempting to compile and run the following program?
   
2. import java.io.*;
   
3. public class OutOut {
   
4.    public static void main(String args[])throws IOException {
   
5.      PrintStream pr = new PrintStream(new FileOutputStream("outfile"));
   
6.      System.out = pr;
   
7.      System.out.println("Lets see what I see now??");
   
8.    }
   
9. }
   
10. Select one correct answer
    
11. a. The code causes a compiler error. out is a declared final
    
12.    in System and cannot be assigned to pr.
    
13. b. The code causes a runtime Exception due the assignment to
    
14.    a final variable.
    
15. c. The code compiles and runs success fully. A file called "outfile" is
    
16.    created and "Lets see what I see now??" is printed in the same.
    
17. d. The code cause a compiler error. PrintStream is an abstract class
    

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源码下载：http://file.javaxxz.com/2014/10/1/115840641.zip