Which of the following can a class NOT be used for? Select one: a.a...

Which of the following can a class NOT be used for?

Select one:

a. a primitive type

b. a container for static methods

c. a container for static variables

d. a type for method parameters

e. a type for variables

Which one of the following Java technologies eliminates memory leaks?

Select one:

a. garbage collection

b. inheritance

c. just-in-time compilers

d. polymorphism

e. virtual machines

Consider the following Java program.

1 public class HelloWorld {

2    // My first program!

3    public static void main(String[] args) {

4        System.out.println("Hello, World!");

5    }

6 }

What starts on line 2?

Select one:

a. a statement

b. a package

c. a method definition

d. a comment

e. a class definition

Consider the following Java method.

public static void main(String[] args) {

   System.out.println("Hello, Final!");

}

Which term best describes "String[] args"?

Select one:

a. actual parameter or argument

b. formal parameter

c. modifier

d. return type

e. superclass

Which of the following is NOT an effective strategy when your program does not work?

Select one:

a. Make random changes to code that you do not understand until it accidentally works.

b. Read through your code and figure out what it does step by step.

c. Check each error message generated by the compiler or IDE.

d. Add debugging statements to output information about the state of your program while it runs.

e. Use a debugger to pause your program while it is running so you can check its state.

What is the output of the following Java program?

import java.util.*;

class ArrayGames {

   public static void main(String[] args) {

       int[] a = {1,2,3,4,5};

       System.out.println(a[1]);

   }

}

Select one:

a. 1

b. 2

c. 3

d. 4

e. 5

Consider the following Java program.

1 public class HelloWorld {

2    // My first program!

3    public static void main(String[] args) {

4        System.out.println("Hello, World!");

5    }

6 }

What starts on line 3?

Select one:

a. a statement

b. a package

c. a method definition

d. a comment

e. a class definition

Consider the following Java method.

public static void main(String[] args) {

   System.out.println("Hello, Final!");

}

Which term best describes '"Hello, Final!"'?

Select one:

a. actual parameter or argument

b. formal parameter

c. modifier

d. return type

e. superclass

Which of the following is NOT a valid identifier in Java?

Select one:

a. p

b. Public

c. public

d. public1

e. PuBlIc_oNe

What is the output of the following Java program?

class Sum {

   static int sum = 0;

   static void add() { sum++; }

   public static void main(String[] args) {

       for (int i = 0; i < 100; i++) add();

       System.out.println(sum);

   }

}

Select one:

a. 0

b. 9

c. 10

d. 99

e. 100