單項選擇題

What is the result()？

A. The program prints “0”.
B. The program prints “4”.
C. The program prints “8”.
D. The program prints “12”.
E. The code does not compile.

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單項選擇題

What is the result？（）

A. The program runs and prints “0”
B. The program runs and prints “1”
C. The program runs but aborts with an exception.
D. An error “possible undefined variable” at line 5 cause compilation to fail.
E. An error “possible undefined variable” at line 10 cause compilation to fail.

單項選擇題

1. class A {
2. public byte file Number () {
3. return l;
4. }
5. }
6.
7. Class B extends A {
8. public short getNumber() {
9. return 2;
10. }
11.
12. public short getNumber() {
13. B b = new B();
14. System.out.printIn(b.getNumber());
15. }
16. }
What is the result（）?

A. Compilation succeeds and l is printed.
B. Compilation succeeds and 2 printed.
C. An error at line 8 cause compilation to fail.
D. An error at line 14 cause complication to fail.
E. Complication succeeds but an exception is thrown at line 14.

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What is the result()？

你可能感興趣的試題

What is the result？（）

1. class A { 2. public byte file Number () { 3. return l; 4. } 5. } 6. 7. Class B extends A { 8. public short getNumber() { 9. return 2; 10. } 11. 12. public short getNumber() { 13. B b = new B(); 14. System.out.printIn(b.getNumber()); 15. } 16. } What is the result（）?

What is the result()？

What is the result？（）

1. class A {
2. public byte file Number () {
3. return l;
4. }
5. }
6.
7. Class B extends A {
8. public short getNumber() {
9. return 2;
10. }
11.
12. public short getNumber() {
13. B b = new B();
14. System.out.printIn(b.getNumber());
15. }
16. }
What is the result（）?