Given:  1.  public class ConstOver {  2.  public constOver(i

题目
多选题
Given:  1.  public class ConstOver {  2.  public constOver(int x, int y, int z) {  3.  }  4.  }   Which two overload the ConstOver Constructor?()
A

ConstOver() {}

B

protected int ConstOver(){}

C

private ConstOver(int z, int y, byte x ) {}

D

public Object ConstOver(Int x, int y, int z) {}

E

pubic void ConstOver (byte x, byte y, byte z) {}

参考答案和解析
正确答案: B,D
解析: 暂无解析
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相似问题和答案

第1题:

1. public class Target {  2. private int i = 0;  3. public int addOne() {  4. return ++i;  5. }  6. }  And:  1. public class Client {  2. public static void main(String[] args) {  3. System.out.println(new Target().addOne());  4. }  5. }  Which change can you make to Target without affecting Client?() 

  • A、 Line 4 of class Target can be changed to return i++;
  • B、 Line 2 of class Target can be changed to private int i = 1;
  • C、 Line 3 of class Target can be changed to private int addOne() {
  • D、 Line 2 of class Target can be changed to private Integer i = 0;

正确答案:D

第2题:

1. public class a {  2. public void method1() {  3. try {  4. B b=new b();  5. b.method2();  6. // more code here  7. } catch (TestException te) {  8. throw new RuntimeException(te);  9. }  10. }  11. }  1. public class b {  2. public void method2() throws TestException {  3. // more code here  4. }  5. }  1. public class TestException extends Exception {  2. }  Given:  31. public void method() {  32. A a=new a();  33. a.method1();  34. }  Which is true if a TestException is thrown on line 3 of class b?()

  • A、 Line 33 must be called within a try block.
  • B、 The exception thrown by method1 in class a is not required to be caught.
  • C、 The method declared on line 31 must be declared to throw a RuntimeException.
  • D、 On line 5 of class a, the call to method2 of class b does not need to be placed in a try/catch block.

正确答案:B

第3题:

Given:10. interface Data { public void load(); }11. abstract class Info { public abstract void load(); }Which class correctly uses the Data interface and Info class?()()

A.

B.

C.

D.

E.

F.


参考答案:A

第4题:

Given:  1.  public class ConstOver {  2.  public constOver(int x, int y, int z) {  3.  }  4.  }   Which two overload the ConstOver Constructor?()

  • A、 ConstOver() {}
  • B、 protected int ConstOver(){}
  • C、 private ConstOver(int z, int y, byte x ) {}
  • D、 public Object ConstOver(Int x, int y, int z) {}
  • E、 pubic void ConstOver (byte x, byte y, byte z) {}

正确答案:A,C

第5题:

class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()  

  • A、 0
  • B、 1
  • C、 2
  • D、 Compilation fails.

正确答案:C

第6题:

1. public interface A {  2. public void doSomething(String thing);  3. }  1. public class AImpl implements A {  2. public void doSomething(String msg) { }  3. }  1. public class B {  2. public A doit() {  3. // more code here  4. }  5.  6. public String execute() { 7. // more code here  8. }  9. }  1. public class C extends B {  2. public AImpl doit() {  3. // more code here  4. }  5.  6. public Object execute() {  7. // more code here  8. }  9. }  Which statement is true about the classes and interfaces in the exhibit?() 

  • A、 Compilation will succeed for all classes and interfaces.
  • B、 Compilation of class C will fail because of an error in line 2.
  • C、 Compilation of class C will fail because of an error in line 6.
  • D、 Compilation of class AImpl will fail because of an error in line 2.

正确答案:C

第7题:

Given classes defined in two different files:  1. package util;  2. public class BitUtils {  3. private static void process(byte[] b) { }  4. }  1. package app;  2. public class SomeApp {  3. public static void main(String[] args) {  4. byte[] bytes = new byte[256];  5. // insert code here  6. }  7. }  What is required at line 5 in class SomeApp to use the process method of BitUtils?() 

  • A、 process(bytes);
  • B、 BitUtils.process(bytes);
  • C、 app.BitUtils.process(bytes);
  • D、 util.BitUtils.process(bytes);
  • E、 import util.BitUtils. *; process(bytes);
  • F、 SomeApp cannot use the process method in BitUtils.

正确答案:F

第8题:

Given:Which two, inserted at line 11, will allow the code to compile?()

A.public class MinMax<?> {

B.public class MinMax<? extends Number> {

C.public class MinMax<N extends Object> {

D.public class MinMax<N extends Number> {

E.public class MinMax<? extends Object> {

F.public class MinMax<N extends Integer> {


参考答案:D, F

第9题:

public class ConstOver {  public ConstOver (int x, int y, int z)  {  }  }   Which two overload the ConstOver constructor?()   

  • A、 ConstOver ( ) { }
  • B、 Protected int ConstOver ( ) { }
  • C、 Private ConstOver (int z, int y, byte x) { }
  • D、 Public Object ConstOver (int x, int y, int z) { }
  • E、 Public void ConstOver (byte x, byte y, byte z) { }

正确答案:A,C

第10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

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