Void setVar(float f) {x = f;}
Public void setVar(int f) {x = f;}
Public void setVar(float f) {x = f;}
Public double setVar(float f) {x = f;}
Public final void setVar(float f) {x = f;}
Protected float setVar() {x=3.0f; return 3.0f; }
第1题:
class super { public float getNum() {return 3.0f;} } public class Sub extends Super { } Which method, placed at line 6, will cause a compiler error?()
第2题:
1. abstract class AbstractIt { 2. abstract float getFloat(); 3. } 4. public class AbstractTest extends AbstractIt { 5. private float f1 = 1.0f; 6. private float getFloat() { return f1; } 7. } What is the result?()
第3题:
类A定义如下: class A { private int x=10; int getx() { return x;} } class B extends A { private int x=15; //需要覆盖getx()方法 } 在下述方法中可以在类B中覆盖getx()方法的是 ( )
A.int getx(){…}
B.int getx(float f){…}
C.float getx(){…}
D.double getx(float f){…}
第4题:
Which two cause a compiler error?()
第5题:
abstract class abstrctIt { abstract float getFloat (); } public class AbstractTest extends AbstractIt { private float f1= 1.0f; private float getFloat () {return f1;} } What is the result? ()
第6题:
class One { void foo() {} } class Two extends One { //insert method here } Which three methods, inserted individually at line 14, will correctly complete class Two?()
第7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()?
第8题:
1. class BaseClass { 2. private float x = 1.of; 3. protected float getVar() { return x; } 4. } 5. class SubClass extends BaseClass { 6. private float x = 2.Of; 7. // insert code here 8. } Which two are valid examples of method overriding when inserted at line 7?()
第9题:
Which three are valid declarations of a float? ()
第10题:
class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?()