1. public class Boxer1 {  2. Integer i;  3. int x;  4. public Boxer1(int y) {  5. x=i+y;  6. System.out.println(x);  7. }  8. public static void main(String[] args) {  9. new Boxer1(new Integer(4));  10. }  11. }  What is the result?() 

A .  The value “4” is printed at the command line. B .  Compilation fails because of an error in line 5. C .  Compilation fails because of an error in line 9. D .  A NullPointerException occurs at runtime. E .  A NumberFormatException occurs at runtime. F .  An IllegalStateException occurs at runtime.

时间:2022-10-17 03:18:11 所属题库:SCJP程序员认证考试题库

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