单项选择题
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.
相关考题
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单项选择题
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. -
单项选择题
1. class A { 3. public String to String（） { 4. return “4”； 5. } 6. } 7. class B extends A { 8. public String toString（） { 9. return super.toString（） + “3”； 10. } 11. } 12. public class Test { 13. public static void main （String[] args） { 14. System.out.printIn（new B（））； 15. } 16. } What is the result()？
A. Compilation succeeds and 4 is printed.
B. Compilation …………… is printed.
C. An error on line 9 cause compilation to fail.
D. An error on line 14 cause compilation to fail.
E. Compilation succeeds but an exception is thrown at line 9. -
多项选择题
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（）？
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：}
