Array2

More Concepts of Java Arrays

Initialization with Values:
Arrays can also be initialized directly with values during declaration.

int[] numbers = {10, 20, 30, 40, 50}; // creates and initializes an array

Iterating Over an Array:
You can use loops, such as for or for-each, to iterate through each element in the array.

for (int i = 0; i < numbers.length; i++) {
    System.out.println(numbers[i]); // prints each element
}

for (int number : numbers) {
    System.out.println(number); // enhanced for loop to print each element
}

Passing Arrays to Methods:
Arrays can be passed as arguments to methods, allowing you to manipulate the array within the method.

public void printArray(int[] arr) {
    for (int num : arr) {
        System.out.println(num);
    }
}

Copying Arrays:
You can copy an array using methods like System.arraycopy() or using the Arrays.copyOf() method.

int[] copiedArray = Arrays.copyOf(numbers, numbers.length); // copies the entire array

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After-class Exercises

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