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Output of Java Programs | Set 38 (Arrays)

  • Difficulty Level : Medium
  • Last Updated : 25 Sep, 2017

Prerequisite : Arrays in Java

Question 1. What is the output of this question




class Test1 {
public
    static void main(String[] args)
    {
        int arr[] = { 11, 22, 33 };
        System.out.print(arr[-2]);
    }
}

Option
A) 11 33
B) Error
C) exception
D) 11 -33

Output: C

Explanation : We will get java.lang.ArrayIndexOutOfBoundsException because [-2] index is out of range.

Question 2. What is the output of this question?






class Test2 {
public
    static void main(String[] args)
    {
        int arr[][] = { { 11, 22 }, { 33, 44, 55 } };
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j < arr.length; j++)
                System.out.print(arr[i][j] + " ");
            System.out.println();
        }
    }
}

Option
A) 11 22
33 44 55
B) 11 22
33 44
C) Error
D) Exception

Output: B

Explanation : Here arr.length returns 2 of the array size, because first dimension size if 2.

Question 3. What is the output of this question?




class Test2 {
public
    static void main(String[] args)
    {
        int arr[][] = { { 11, 22 }, { 33, 44, 55 } };
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j < arr[i].length; j++)
                System.out.print(arr[i][j] + " ");
            System.out.println();
        }
    }
}

Option
A) 11 22
33 44 55
B) 11 22
33 44
C) Exception
D) Error

Output: A

Explanation : Here arr[i].length returns first time 2 because first dimension size is 2 and second time 3 because 3 second dimension array size is 3.

Question 4. What is the output of this question ?




class Test2 {
public
    static void main(String[] args)
    {
        int arr[][] = { { 11, 22 }, { 33, 44, 55 } };
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j < 3; j++)
                System.out.print(arr[i][j] + " ");
            System.out.println();
        }
    }
}

Option
A) 11 22
33 44 55
B) 11 22
33 44
C) Error
D) Exception

Output: D

Explanation : This program will give exception :java.lang.ArrayIndexOutOfBoundsException
because we want to print the value out of range of array.

Question 5. What is the output of this question?




class Test5 {
public
    static void main(String[] args)
    {
        int arr[] = new int[5];
        int arr2[] = new int[5];
        System.out.print(arr.length + " ");
        System.out.print(arr2.length());
    }
}

Option
A) 5 5
B) Error
C) Exception
D) None

Output: B

Explanation : It will give error because length() method is not in java. error : Can not find symbol length().

This article is contributed by Shivakant Jaiswal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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