文档介绍：Exam : 310-081
Title : Sun Certified ponent Developer
for the Java 2 Platform, Enterprise Edition
Ver : 10-19-04
310-081
Total Question 108
QUESTION 1
Given:
AnInterface is an interface.
AnAdapter0 is a non-abstract, non-final class with a zero argument constructor.
An Adapterl is a non-abstract, non-final class without a zero argument constructor, but
with a constructor that takes one int argument.
Which two construct an anonymous inner class? (Choose two.)
A. AnAdapter1 aa = new AnAdapter1 () {}
B. AnAdapter0 aa = new AnAdapter0 () {}
C. AnAdapter0 aa = new AnAdapter0 (5) {}
D. AnAdapter1 aa = new AnAdapter1 (5) {}
E. AnInterface ai = new Anlnterface (5)) {
Answer: BD
QUESTION 2
1. class A {
3. public String to String() {
4. return "4";
5. }
6. }
7. class B extends A {
8. public String toString() {
9. return () + "3";
10. }
11. }
12. public class Test {
13. public static void main (String[] args) {
14. (new B());
15. }
16. }
What is the result?
A. Compilation eeds and 4 is printed.
B. Compilation ............... is printed.
C. An error on line 9 pilation to fail.
D. An error on line 14 pilation to fail.
E. Compilation eeds but an exception is thrown at line 9.
Answer: B
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310-081
QUESTION 3
Given:
1. public class Method Over {
2. public void set Var (int a, int b, float c) {
3. }
4. }
Which two overload the set Var method? (Choose two.)
A. private void set Var(int a, float c, int b) {}
B. protected void set Var(int a, int b, float c) {}
C. public int set Var(int a, float c, int b) {return a:}
D. public int set Var(int a, int b, float c) {return a:}
E. protected float set Var(int a, int b, float c) {return c:}
Answer: AC
QUESTION 4
1. class A {
2. public byte file Number () {
3. return l;
4. }
5. }
6.
7. Class B extends A {