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下列方法中,可以正确加入类SubX中且父类的方法不会被覆盖的是()class X { public int F(int a, int b ) { int s; s=a+b; return s; } } class SubX extends X{ }
A.public int F(int a, int b) throws MyException { }
B.public float F(int a, int b, float b=1.0) { }
C.public void F() { }
D.int F(int a, int b) { }
参考答案和解析
public void F( ) { }
更多 “下列方法中,可以正确加入类SubX中且父类的方法不会被覆盖的是()class X { public int F(int a, int b ) { int s; s=a+b; return s; } } class SubX extends X{ }A.public int F(int a, int b) throws MyException { }B.public float F(int a, int b, float b=1.0) { }C.public void F() { }D.int F(int a, int b) { }” 相关考题
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protected void change(int x){}B
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单选题下列选项中,能实现对父类的getSalary方法重写的是( )。
class Employee{
public double getSalary(){}
}A
class Manager extends Employee{
public int getSalary(double x){}
}B
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}C
class Manager extends Employee{
public double getSalary(){}
}D
class Manager extends Employee{
public int getSalary(int x,int y){}
}
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protected void change (int x){}B
public void change(int x, int y){}C
public void change (int x){}D
public void change (String s){}
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