class A { public int getNumber(int a) { return a + 1; } } class B extends A { public int getNumber (int a) { return a + 2 } public static void main (String args) { A a = new B(); System.out.printIn(a.getNumber(0)); } } What i
题目
class A { public int getNumber(int a) { return a + 1; } } class B extends A { public int getNumber (int a) { return a + 2 } public static void main (String args) { A a = new B(); System.out.printIn(a.getNumber(0)); } } What is the result? ()
A、 Compilation succeeds and 1 is printed.
B、 Compilation succeeds and 2 is printed.
C、 An error at line 8 causes compilation to fail.
D、 An error at line 13 causes compilation to fail.
E、 An error at line 14 causes compilation to fail.
更多“class A { public int getNumber(int a) { return a + 1; } } class B extends A { public int getNumber (int a) { return a + 2 } public static void main (String args) { A a = new B(); System.out.printIn(a.getNumber(0)); } } What i”相关问题