多选题Given: Which two methods, inserted independently at line 17, correctly complete the Sales class?()Adouble getSalesAmount() { return 1230.45; }Bpublic double getSalesAmount() { return 1230.45; }Cprivate double getSalesAmount() { return 1230.45; }Dprote

题目
多选题
Given: 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; }


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  • 第1题:

    1. class Super {  2. public float getNum() { return 3.0f; }  3. }  4.   5. public class Sub extends Super {  6.   7. }  Which method, placed at line6, causes compilation to fail?()  

    • A、 public void getNum(){}
    • B、 public void getNum(double d){}
    • C、 public float getNum() { return 4.0f; }
    • D、 public double getNum(float d) { return 4.0d; }

    正确答案:A

  • 第2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; }

    正确答案:B,D

  • 第3题:

    class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()

    • A、 public void foo() { }
    • B、 public int foo() { return 3; }
    • C、 public Two foo() { return this; }
    • D、 public One foo() { return this; }
    • E、 public Object foo() { return this; }

    正确答案:C,D

  • 第4题:

    1. public class ReturnIt {  2. return Type methodA(byte x, double y) {  3. return (short)x / y * 2;  4. }  5. }  What is the narrowest valid returnType for methodA in line2?()  

    • A、 int
    • B、 byte
    • C、 long
    • D、 short
    • E、 float
    • F、 double

    正确答案:F

  • 第5题:

    1. public class Blip {  2. protected int blipvert(int x) { return 0; }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods, inserted independently at line 5, will compile?()  

    • A、 public int blipvert(int x) { return 0; }
    • B、 private int blipvert(int x) { return 0; }
    • C、 private int blipvert(long x) { return 0; }
    • D、 protected long blipvert(int x, int y) { return 0; }
    • E、 protected int blipvert(long x) { return 0; }
    • F、 protected long blipvert(long x) { return 0; }
    • G、protected long blipvert(int x) { return 0; }

    正确答案:A,C,D,E,F

  • 第6题:

    多选题
    1. public class Test {  2. public  T findLarger(T x, T y) {  3. if(x.compareTo(y) > 0) {  4. return x;  5. } else {  6. return y;  7. }  8. }  9. }  and:  22. Test t = new Test();  23. // insert code here  Which two will compile without errors when inserted at line 23?()
    A

    Object x = t.findLarger(123, “456”);

    B

    int x = t.findLarger(123, new Double(456));

    C

    int x = t.findLarger(123, new Integer(456));

    D

    int x = (int) t.findLarger(new Double(123), new Double(456));


    正确答案: A,D
    解析: 暂无解析

  • 第7题:

    多选题
    Given: 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 */ }


    正确答案: D,B
    解析: 暂无解析

  • 第8题:

    单选题
    class super {   public float getNum() {return 3.0f;}   }   public class Sub extends Super {   }   Which method, placed at line 6, will cause a compiler error?()
    A

     Public float getNum() {return 4.0f; }

    B

     Public void getNum (){}

    C

     Public void getNum (double d){}

    D

     Public double getNum (float d) {retrun 4.0f; }


    正确答案: C
    解析: 暂无解析

  • 第9题:

    多选题
    1. public class Blip {  2. protected int blipvert(int x) { return 0; }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods, inserted independently at line 5, will compile?()
    A

    public int blipvert(int x) { return 0; }

    B

    private int blipvert(int x) { return 0; }

    C

    private int blipvert(long x) { return 0; }

    D

    protected long blipvert(int x, int y) { return 0; }

    E

    protected int blipvert(long x) { return 0; }

    F

    protected long blipvert(long x) { return 0; }

    G

    protected long blipvert(int x) { return 0; }


    正确答案: B,D
    解析: 暂无解析

  • 第10题:

    单选题
    1. class Super {  2. public float getNum() { return 3.0f; }  3. }  4.   5. public class Sub extends Super {  6.   7. }  Which method, placed at line6, causes compilation to fail?()
    A

     public void getNum(){}

    B

     public void getNum(double d){}

    C

     public float getNum() { return 4.0f; }

    D

     public double getNum(float d) { return 4.0d; }


    正确答案: A
    解析: 暂无解析

  • 第11题:

    多选题
    1. public class OuterClass {  2. private double d1 = 1.0;  3. // insert code here  4. }  Which two are valid if inserted at line 3?()
    A

    static class InnerOne { public double methoda() { return d1; } }

    B

    static class InnerOne { static double methoda() { return d1; } }

    C

    private class InnerOne { public double methoda() { return d1; } }

    D

    protected class InnerOne { static double methoda() { return d1; } }

    E

    public abstract class InnerOne { public abstract double methoda(); }


    正确答案: C,A
    解析: 暂无解析

  • 第12题:

    多选题
    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; }


    正确答案: B,C
    解析: 暂无解析

  • 第13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?()

    • A、 Public float getNum() {return 4.0f; }
    • B、 Public void getNum (){}
    • C、 Public void getNum (double d){}
    • D、 Public double getNum (float d) {retrun 4.0f; }

    正确答案:B

  • 第14题:

    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、 static class InnerOne {  static double methoda() {return d1;}  }
    • C、 private class InnerOne {  public double methoda() {return d1;}  }
    • D、 protected class InnerOne {  static double methoda() {return d1;}  }
    • E、 public abstract class InnerOne {  public abstract double methoda();  }

    正确答案:C,E

  • 第15题:

    1. public class OuterClass {  2. private double d1 = 1.0;  3. // insert code here  4. }  Which two are valid if inserted at line 3?()  

    • A、 static class InnerOne { public double methoda() { return d1; } }
    • B、 static class InnerOne { static double methoda() { return d1; } }
    • C、 private class InnerOne { public double methoda() { return d1; } }
    • D、 protected class InnerOne { static double methoda() { return d1; } }
    • E、 public abstract class InnerOne { public abstract double methoda(); }

    正确答案:C,E

  • 第16题:

    public class returnIt (    returnType methodA(byte x, double y) (   return (short) x/y * 2;   )  )   What is the valid returnType for methodA in line 2?()

    • A、 Int
    • B、 Byte
    • C、 Long
    • D、 Short
    • E、 Float
    • F、 Double

    正确答案:F

  • 第17题:

    You work as an application developer at Certkiller .com. You have been given the responsibility of creating a class named CalcSalary that will determine the salaries of Certkiller .com’s staff. The CalcSalary class includes methods to increment and decrement staff salaries. The following code is included in the CalcSalary class: public class CalcSalary { // for promotions public static bool IncrementSalary (Employee Emp, double Amount) { if (Emp.Status == QuarterlyReview.AboveGoals) Emp.Salary += Amount; return true; } else return false; } //for demotions public static bool DecrementSalary (Employee Emp, double Amount) { if (Emp.Status == QuarterlyReview.AboveGoals) Emp.Salary -= Amount; return true; } else return false; } } You would like to invoke the IncrementSalary and DecrementSalary methods dynamically at runtime from the sales manager application, and decide to create a delegate named SalaryDelegate to invoke them. You need to ensure that you use the appropriate code to declare the SalaryDelegate delegate.What is the correct line of code?()

    • A、 public delegate bool Salary (Employee Emp, double Amount);
    • B、 public bool Salary (Employee Emp, double Amount);
    • C、 public event bool Salary (Employee Emp, double Amount);
    • D、 public delegate void Salary (Employee Emp, double Amount);

    正确答案:A

  • 第18题:

    多选题
    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

    static class InnerOne {  static double methoda() {return d1;} }

    C

    private class InnerOne {  public double methoda() {return d1;} }

    D

    protected class InnerOne {  static double methoda() {return d1;} }

    E

    public abstract class InnerOne {  public abstract double methoda();  }


    正确答案: D,C
    解析: 暂无解析

  • 第19题:

    多选题
    Given the following code, which method declarations, when inserted at the indicated position, will not cause the program to fail compilation?()   public class Qdd1f {   public long sum(long a, long b) {  return a + b;  }   // insert new method declaration here  }
    A

    public int sum(int a, int b) { return a + b; }

    B

    public int sum(long a, long b) { return 0; }

    C

    abstract int sum();

    D

    private long sum(long a, long b) { return a + b; }

    E

    public long sum(long a, int b) { return a + b; }


    正确答案: B,C
    解析: 暂无解析

  • 第20题:

    多选题
    Given: Which five methods, inserted independently at line 5, will compile?()
    A

    protected int blipvert(long x) { return 0; }

    B

    protected long blipvert(int x) { return 0; }

    C

    private int blipvert(long x) { return 0; }

    D

    private int blipvert(int x) { return 0; }

    E

    public int blipvert(int x) { return 0; }

    F

    protected long blipvert(long x) { return 0; }

    G

    protected long blipvert(int x, int y) { return 0; }


    正确答案: D,B
    解析: 暂无解析

  • 第21题:

    多选题
    class A {  protected int method1(int a, int b) { return 0; }  }  Which two are valid in a class that extends class A?()
    A

    public int method1(int a, int b) { return 0; }

    B

    private int method1(int a, int b) { return 0; }

    C

    private int method1(int a, long b) { return 0; }

    D

    public short method1(int a, int b) { return 0: }

    E

    static protected int method1(int a, int b) { return 0; }


    正确答案: D,B
    解析: 暂无解析

  • 第22题:

    多选题
    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; }


    正确答案: E,A
    解析: 暂无解析

  • 第23题:

    多选题
    class One {   public One foo() { return this; }  }  class Two extends One {  public One foo() { return this; }  }  class Three extends Two {   // insert method here  }  Which two methods, inserted individually, correctly complete the Three class?()
    A

    public void foo() { }

    B

    public int foo() { return 3; }

    C

    public Two foo() { return this; }

    D

    public One foo() { return this; }

    E

    public Object foo() { return this; }


    正确答案: C,D
    解析: 暂无解析