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1.

Predict the output?// file name: Main.javapublic class Main {public static void main(String args[]) {int arr[] = {10, 20, 30, 40, 50};for(int i=0; i < arr.length; i++){System.out.print(" " + arr[i]);}}}(A) 10 20 30 40 50(B) Compiler Error(C) 10 20 30 40

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2.

class Test {public static void main(String args[]) {int arr[2];System.out.println(arr[0]);System.out.println(arr[1]);}}(A)00(B)garbage valuegarbage value(C) Compiler Error(D) Exception

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3.

class Test {public static void main(String args[]) {int arr[] = new int[2];System.out.println(arr[0]);System.out.println(arr[1]);}}(A)00(B)garbage valuegarbage value(C) Compiler Error(D) Exception

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4.

public class Main {public static void main(String args[]) {int arr[][] = new int[4][];arr[0] = new int[1];arr[1] = new int[2];arr[2] = new int[3];arr[3] = new int[4];int i, j, k = 0;for (i = 0; i < 4; i++) {for (j = 0; j < i + 1; j++) {arr[i][j] = k;k++;}}for (i = 0; i < 4; i++) {for (j = 0; j < i + 1; j++) {System.out.print(" " + arr[i][j]);k++;}System.out.println();}}}(A) Compiler Error(B) 0 1 2 3 4 5 6 7 8 9 (C) 0 0 0 0 0 0 0 0 0 0 (D) 9 7 8 4 5 6 0 1 2 3

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5.

Which of the following is FALSE about arrays on Java(A) A java array is always an object(B) Length of array can be changed after creation of array(C) Arrays in Java are always allocated on heap

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6.

Output of following Java program?class Test{public static void main (String[] args){int arr1[] = {1, 2, 3};int arr2[] = {1, 2, 3};if (arr1 == arr2)System.out.println("Same");elseSystem.out.println("Not same");}}(A) Same(B) Not Same

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7.

Output of following Java program?import java.util.Arrays;class Test{public static void main (String[] args){int arr1[] = {1, 2, 3};int arr2[] = {1, 2, 3};if (Arrays.equals(arr1, arr2))System.out.println("Same");elseSystem.out.println("Not same");}}(A) Same(B) Not Same

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8.

class Test{public static void main (String[] args){int arr1[] = {1, 2, 3};int arr2[] = {1, 2, 3};if (arr1.equals(arr2))System.out.println("Same");elseSystem.out.println("Not same");}}(A) Same(B) Not same

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