public class OuterClass {  private double d1  1.0；  //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid？（） A、 static class InnerOne {  public double methoda（） {return d1；}  }B、 stat

第1题：

Which two statements are true？（）

• A、 An inner class may be declared as static.
• B、 An anonymous inner class can be declared as public.
• C、 An anonymous inner class can be declared as private.
• D、 An anonymous inner class can extend an abstract class.
• E、 An anonymous inner class can be declared as protected.

第2题：

Which lines of code are valid declarations of a native method when occurring within the declaration of the following class？（）    public class Qf575 {   // insert declaration of a native method here   }  

• A、native public void setTemperature（int kelvin）；
• B、private native void setTemperature（int kelvin）；
• C、protected int native getTemperature（）；
• D、public abstract native void setTemperature（int kelvin）；
• E、native int setTemperature（int kelvin） {}

第3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？（） 

• A、 float getVar（） { return x； }
• B、 public float getVar（） { return x； }
• C、 public double getVar（） { return x； }
• D、 protected float getVar（） { return x； }
• E、 public float getVar（float f） { return f； }

第4题：

package foo； public class Outer （  public static class Inner （  ）  ）   Which statement is true？ （） 

• A、 An instance of the Inner class can be constructed with “new Outer.Inner （）”
• B、 An instance of the inner class cannot be constructed outside of package foo.
• C、 An instance of the inner class can only be constructed from within the outer class.
• D、 From within the package bar， an instance of the inner class can be constructed with “new inner（）”

第5题：

Which two are valid declarations within an interface definition？（） 

• A、 void methoda（）；
• B、 public double methoda（）；
• C、 public final double methoda（）；
• D、 static void methoda（double d1）；
• E、 protected void methoda（double d1）；

第6题：

package foo；  public class Outer {  public static class Inner {  }  }   Which statement is true？（） 

• A、 Compilation fails.
• B、 An instance of the Inner class can be constructed with “new Outer.Inner（）”.
• C、 An instance of the Inner class cannot be constructed outside of package foo.
• D、 An instance of the Inner class can be constructed only from within the Outer class.
• E、 From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.

第7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？（）

• A、 int foo（） { /* more code here */ }
• B、 void foo（） { /* more code here */ }
• C、 public void foo（） { /* more code here */ }
• D、 private void foo（） { /* more code here */ }
• E、 protected void foo（） { /* more code here */ }

第8题：

Which will declare a method that is available to all members of the same package and be referenced without an instance of the class？（）

• A、 abstract public void methoda （）；
• B、 public abstract double inethoda （）；
• C、 static void methoda （double dl） {}
• D、 public native double methoda （） {}
• E、 protected void methoda （double dl） {}

第9题：

10. abstract public class Employee {  11. protected abstract double getSalesAmount（）；  12. public double getCommision（） {  13. return getSalesAmount（） * 0.15；  14. }  15. }  16. class Sales extends Employee {  17. // insert method here  18. }  Which two methods， inserted independently at line 17， correctly complete the Sales class？（）

• A、 double getSalesAmount（） { return 1230.45； }
• B、 public double getSalesAmount（） { return 1230.45； }
• C、 private double getSalesAmount（） { return 1230.45； }
• D、 protected double getSalesAmount（） { return 1230.45； }

第10题：

Which the following two statements are true？（）

• A、 An inner class may be declared as static.
• B、 An anonymous inner class can be declared as public.
• C、 An anonymous inner class can be declared as private.
• D、 An anonymous inner class can extend an abstract class.
• E、 An anonymous inner class can be declared as protected.