单项选择题
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.
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()?
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()?
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()?