JAVA ARRAY QUIZ | EXAMIANS

In Java arrays are

object references

None of these

primitive data type

objects

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YOUR ANSWER : ?

Which one of the following is a valid statement?

char[] c = new char[5];

char[] c = new char();

char[] c = new char(4);

char[] c = new char[];

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Analyze the following code and choose the correct answer.int[] arr = new int[5];arr = new int[6];

The code has runtime errors because the variable arr cannot be changed once it is assigned.

The code has compile errors because the variable arr cannot be changed once it is assigned.

The code has compile errors because we cannot assign a different size array to arr.

The code can compile and run fine. The second line assigns a new array to arr.

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What is the value of a[1] after the following code is executed?int[] a = {0, 2, 4, 1, 3};for(int i = 0; i < a.length; i++)a[i] = a[(a[i] + 3) % a.length];

2

3

4

0

1

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Determine output:public class Test{ public static void main(String[] args){ int[] x = {1, 2, 3, 4}; int[] y = x; x = new int[2]; for(int i = 0; i < x.length; i++) System.out.print(y[i] + " "); }}

0 0

0 0 0 0

1 2 3 4

None of these

1 2

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What is the result of compiling and running the following code?public class Test{ public static void main(String[] args){ int[] a = new int[0]; System.out.print(a.length); }}

0

None of these

Compilation error, arrays cannot be initialized to zero size.

Compilation error, it is a.length() not a.length

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What will be the output?public class Test{ public static void main(String[] args){ int[] a = new int[4]; a[1] = 1; a = new int[2]; System.out.println("a[1] is " + a[1]); }}

The program has a runtime error because a[1

a[1] is 1

a[1] is 0

The program has a compile error because new int[2<sp< label=""></sp<>

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What will be the output?public class Test{ public static void main(String[] args){ int[] x = new int[3]; System.out.println("x[0] is " + x[0]); }}

The program runs fine and displays x[0] is 0.

The program has a compile error because the size of the array wasn't specified when declaring the array.

The program has a runtime error because the array elements are not initialized.

The program has a runtime error because the array element x[0] is not defined.

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When you pass an array to a method, the method receives ________ .

The length of the array.

The reference of the array.

A copy of the array.

A copy of the first element.

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What is the output of the following code?public class Test{ public static void main(String args[]){ double[] myList = {1, 5, 5, 5, 5, 1}; double max = myList[0]; int indexOfMax = 0; for(int i = 1; i < myList.length; i++){ if(myList[i] > max){ max = myList[i]; indexOfMax = i; } } System.out.println(indexOfMax); }}

2

1

3

0

4

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