Section 8 Quiz

1. Which two are limitations of an array of primitives (ie: int[] x)?

(Pilih semua jawaban yang benar)

The size of the array is fixed during array creation and cannot grow once initialized. (*)

You need to create your own methods to manipulate array contents. (*)

You cannot overwrite the contents of an array once initialized.

You can create only one array in a class.

Correct

(1/1) Point

2. Which is NOT a benefit of ArrayList class?

You can remove all of the elements of an ArrayList with a method.

An ArrayList grows as you add elements.

You can use an ArrayList list to store Java primitive values (like int). (*)

An ArrayList shrinks as you remove elements.

Correct

(1/1) Point

3. The size of an ArrayList can grow as needed.

benar (*)

Palsu

Correct

(1/1) Point

4. If the try block succeeds then no exception has occurred.

benar (*)

Palsu

Correct

(1/1) Point

5. What is the output?

int[] array = {10, 20, 30};

int b = 0;

try{

   System.out.println("1");

   int c = (array[3] / b);

   System.out.println("2");

}

catch(ArithmeticException ex){

   System.out.println("Arithmetic Exception");

}

catch(ArrayIndexOutOfBoundsException ex){

   System.out.println("Array index out of bounds");

}

1

Arithmetic Exception

1

Array index out of bounds (*)

1

2

Array index out of bounds

1

2

Array index out of bounds

Correct

6. Which code goes in the try block?

Any code that is likely to cause an exception. (*)

Any code that is safe from an exception.

Any code that can handle an exception.

Any code that is likely to print the exception details.

Correct

(1/1) Point

7. Which two are valid array declarations?

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int size[]; (*)

int[] size; (*)

int array size;

[]int size;

Correct

(1/1) Point

8. An array allows you to create a single identifier that can be used to organize many items of the same data type.

benar (*)

Palsu

Correct

(1/1) Point

9. What is an array?

An array is a way to create multiple copies of a single value.

An array is a Java primitive type.

An array is an indexed container that holds a set of values of a single type. (*)

An array is an indexed container that holds a set of values of a multiple types.

Correct

(1/1) Point

10. The Java compiler does not check for an ArrayIndexOutOfBoundsException during the compilation of a program containing arrays.

benar (*)

Palsu

Correct

11. Given:

int x[];

What is the value of x?

null (*)

1

0

Some random number.

Correct

(1/1) Point

12. What is the output?

int[] arr = new int[5];

 for(int i=0; i<arr.length; i++){

     arr[i] = i;

 }

 for(int i=0; i<arr.length; i++) {

     System.out.print(arr[i]);

 }            

12345

123

01234 (*)

012345

Correct

(1/1) Point

13. What are two advantages of adding print statements for debugging?

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You can identify runtime errors.

You can identify which methods have been called. (*)

You can identify the order in which methods have been called. (*)

You can identify compilation errors.

Correct

(1/1) Point

14. Using a Java debugger, you can set breakpoints and trace through a program one line at a time.

benar (*)

Palsu

Correct

(1/1) Point

15. Which is not a compilation error?

int x=2

y = 3 + * 5;

int y;

y++; (*)

x = ( 3 + 5;

Correct

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