Question

What is the output of the following?

class ChangeIt
{
static void doIt( int[] z )
{
int[] A = z ;
A[0] = 99;
}
}

class TestIt
{
public static void main ( String[] args )
{
int[] myArray = {1, 2, 3, 4, 5} ;

ChangeIt.doIt( myArray );

for (int j=0; j System ( myArray[j] + " " ) ;
}
}

Answer 1

The output of the given Java code would be '99 2 3 4 5' after the array has been modified by the ChangeIt.doIt method.

Step-by-step explanation:

The question pertains to a Java program that manipulates an array by passing it to a static method. Inside the ChangeIt.doIt method, the reference to the array remains the same, meaning that changes made to the array inside the method will affect the original array. The line A[0] = 99; changes the first element of the array to 99.

When control returns to the main method, the contents of myArray are printed after the changes were applied. Consequently, the output would be 99 2 3 4 5, reflecting the update made to the first element of the array in the doIt method.

The output of the given code will be 99 2 3 4 5.

In the code, the doIt() method in the ChangeIt class takes an integer array as a parameter and updates the value of its first element to 99.

When the doIt() method is called in the TestIt class with the myArray array, it passes a reference to the myArray array. As arrays are passed by reference in Java, any changes made to the array inside the method will affect the original array.

After calling the doIt() method, the for loop in the TestIt class prints the elements of the modified array, which will be 99 2 3 4 5.