How can I merge two arrays in Java?

How can I merge two arrays in Java?

You can merge two arrays in Java using various methods. One common way is to use a loop to copy elements from both arrays into a new array.

Can you show me a code example?

Sure! Here's a simple example:

public class ArrayMerge {
    public static void main(String[] args) {
        int[] array1 = {1, 2, 3};
        int[] array2 = {4, 5, 6};
        int[] mergedArray = new int[array1.length + array2.length];

        System.arraycopy(array1, 0, mergedArray, 0, array1.length);
        System.arraycopy(array2, 0, mergedArray, array1.length, array2.length);

        System.out.println(Arrays.toString(mergedArray));
    }
}

What if the arrays are of different types?

If the arrays are of different types, you can use an Object array to hold the merged values, but you'll need to handle type casting.

Are there any built-in methods for merging arrays?

Yes, in Java 8 and later, you can use streams to merge arrays. For example:

int[] mergedArray = IntStream.concat(Arrays.stream(array1), Arrays.stream(array2)).toArray();