单选题Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）ACompilation will succeed for all classes and interfaces.BCompilation of class C will fail because of an error in line 2.CCompilation of class C will f

题目

单选题

Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）

Compilation will succeed for all classes and interfaces.

Compilation of class C will fail because of an error in line 2.

Compilation of class C will fail because of an error in line 6.

Compilation of class AImpl will fail because of an error in line 2.

更多“单选题Click the Exhibit button. 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 ”相关问题

第1题

package foo； import java.util.Vector； private class MyVector extends Vector { int i = 1； public MyVector（） { i = 2； } } public class MyNewVector extends MyVector { public MyNewVector（） { i = 4； } public static void main（String args[]） { MyVector v = new MyNewVector（）； } } What is the result？（）A、 Compilation succeeds.B、 Compilation fails because of an error at line 5.C、 Compilation fails because of an error at line 6.D、 Compilation fails because of an error at line 14.E、 Compilation fails because of an error at line 17.

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第2题

public class X { public static void main （String[] args） { byte b = 127； byte c = 126； byte d = b + c； } } Which statement is true？（） A、 Compilation succeeds and d takes the value 253.B、 Line 5 contains an error that prevents compilation.C、 Line 5 throws an exception indicating “Out of range”D、 Line 3 and 4 contain error that prevent compilation.E、 The compilation succeeds and d takes the value of 1.

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第3题

package foo； import java.util.Vector； private class MyVector extends Vector { int i = 1； public MyVector（） { i = 2； } } public class MyNewVector extends MyVector { public MyNewVector （） { i = 4； } public static void main （String args ） { MyVector v = new MyNewVector（）； } } The file MyNewVector.java is shown in the exhibit. What is the result？（）A、 Compilation will succeed.B、 Compilation will fail at line 5.C、 Compilation will fail at line 6.D、 Compilation will fail at line 14.E、 Compilation will fail at line 17.

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第4题

class A { public int getNumber（int a） { return a + 1； } } class B extends A { public int getNumber （int a） { return a + 2 } public static void main （String args） { A a = new B（）； System.out.printIn（a.getNumber（0））； } } What is the result？（） A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 13 causes compilation to fail.E、 An error at line 14 causes compilation to fail.

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第5题

interface foo { int k = 0； } public class test implements Foo （ public static void main（String args）（ int i； Test test = new test （）； i= test.k； i= Test.k； i= Foo.k；）） What is the result？（）A、 Compilation succeeds.B、 An error at line 2 causes compilation to fail.C、 An error at line 9 causes compilation to fail.D、 An error at line 10 causes compilation to fail.E、 An error at line 11 causes compilation to fail.

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第6题

单选题public class Test { public static void main （String args） { class Foo { public int i = 3； } Object o = （Object） new Foo（）； Foo foo = （Foo）o； System.out.printIn（foo. i）； } } What is the result？（）ACompilation will fail.BCompilation will succeed and the program will print “3”CCompilation will succeed but the program will throw a ClassCastException at line 6.DCompilation will succeed but the program will throw a ClassCastException at line 7.

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第7题

单选题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？（）ACompilation will succeed for all classes and interfaces.BCompilation of class C will fail because of an error in line 2.CCompilation of class C will fail because of an error in line 6.DCompilation of class AImpl will fail because of an error in line 2.

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单选题Click the Exhibit button. 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

题目

更多“单选题Click the Exhibit button. 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 ”相关问题

第1题

第2题

第3题

第4题

第5题

第6题

第7题

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