Page 114 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

3 Passing Arrays to Methods
TASK 1: to pass data and objects to methods in Java programs
public class ArrayDemo {

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

// Passing an array to a method

printArray(numbers);
}
// Method to print array elements
public static void printArray(int[] arr) {
System.out.println(“Array elements:”);

for (int num : arr) {
System.out.print(num + “ “);
}
}
}

Output:

Explanation:

• In this program, we define an array numbers containing integers.
• We define a method printArray that takes an array of integers as a parameter and prints its elements.
• In the main method, we call the printArray method and pass the numbers array as an argument.
These examples demonstrate how to pass data and objects to methods in Java programs. It’s important to note
that Java is pass-by-value, meaning that when you pass a parameter to a method, a copy of the parameter’s
value is passed, not the actual object itself. For objects, the value passed is the reference to the object in memory.
Thus, changes made to parameters inside the method are reflected in the original objects or variables if they are
mutable.

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CITS : IT & ITES - Computer Software Application - Exercise 95