Java-Day2

Java-Day2

University

15 Qs

quiz-placeholder

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Java-Day2

Java-Day2

Assessment

Quiz

Computers

University

Hard

Created by

Anisha SET

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the following declaration, which expression returns the size of the array,

assuming the array has been initialized?

int[] array;

Select the one correct answer

array[].length()

array.length()

array[].length

array.length

array[].size()

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is it possible to create arrays of length zero?

Select the one correct answer.

Yes, you can create arrays of any type with length zero.

Yes, but only for primitive data types.

Yes, but only for arrays of reference types.

No, you cannot create zero-length arrays, but the main() method may be passed

a zero-length array of Strings when no program arguments are specified.

No, it is not possible to create arrays of length zero in Java

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following array declaration statements is not legal?

Select the one correct answer

int []a[] = new int [4][4];

int a[][] = new int [4][4];

int a[][] = new int [][4];

int []a[] = new int [4][];

int [][]a = new int [4][4];

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of these array declaration statements are not legal?

Select the two correct answers.

int[] i[] = { { 1, 2 }, { 1 }, {}, { 1, 2, 3 } };

int i[] = new int[2] {1, 2};

int i[][] = new int[][] { {1, 2, 3}, {4, 5, 6} };

int i[][] = { { 1, 2 }, new int[ 2 ] };

int i[4] = { 1, 2, 3, 4 };

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What would be the result of compiling and running the following program?

The code will not compile, because the array type int[] is incorrect.

The program will compile, but will throw an ArrayIndexOutOfBoundsException

when run.

The program will compile and run without error, but will produce no output.

The program will compile and run without error, and will print the numbers

0 through 19.

The program will compile and run without error, and will print 0 twenty

times

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What would be the result of compiling and running the following program?

The program will fail to compile because of uninitialized variables.

The program will throw a java.lang.NullPointerException when run.

The program will print: 0 false NaN null.

The program will print: 0 false 0 null.

The program will print: null 0 0 null.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What will be printed when the following program is run?

0

1

2

3

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