Tag: programming languages

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Multiple choice technology programming languages

The following code throws an exception. public class ContainerClass { public void draw() throws IOException { // additional code to write values to file. system.out.println("This container was drawn and saved to file."); return true; } } What code overrides this method? (Note that Exception itself is a superclass of IOException)

  1. 1 public class Cup extends ContainerClass {

  2. 2 public class Basket extends ContainerClass {

  3. 3 public class Caldron extends ContainerClass {

  4. 4 public class Bag extends ContainerClass {
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology programming languages

You have the following class definitions: public abstract class Vehicles { } public class Bus { } public class MyClass { public Vehicles go() { return new Bus(); } } What change would have to be made to allow this code to compile?
    1. Change public abstract class Vehicles { } to public class Vehicles { }
    1. Change public class Bus { } to public class Bus extends Vehicles { }
    1. Change public class MyClass { to private class My Class {
    1. Change public abstract class Vehicles { } to protected abstract class Vehicles { }
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology programming languages

. Which line of the following code would make the test object eligible for garbage collection? (Line numbers are included only for clarity's sake) 1. public class Garbage { 2. public static void main(String [] args) { 3. StringBuffer test = new StringBuffer("hello"); 4. System.out.println(test); 5. test = null; 6. } 7. }
    1. 3
    1. 4
    1. 5
    1. No lines enable the garbage collection of the test object.
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology programming languages

21Which statement is correct concerning the assertion mechanism?

  1. 1 This is the pseudocode representing the two types of assert statements:

  2. 2 Always handle an AssertionError in a try-catch-finally block.

  3. 3 This is the pseudocode representing the two types of assert statements:

  4. 4 Assertions of the 'assert booleanExpression;' variety should not be disabled before distributing the software.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice technology programming languages

You have the following class definition: public class Language {} You need constructors to provide developers with two methods of object instantiation. Developers should be able to instantiate the object with either a String argument or no argument. What should you do to achieve this goal? (Choose all that apply.) You have not made any correct choices. The correct options are as follows
    1. Add Language (string Name) {}
    1. Add Language ( ) { }
    1. Add Language (String Name) { }
    1. Allow the compiler to add a default constructor.
Reveal answer Fill a bubble to check yourself
A,D Correct answer