array concat two arrays in java

1import java.util.Arrays;
2
3public class Concat {
4
5    public static void main(String[] args) {
6        int[] array1 = {1, 2, 3};
7        int[] array2 = {4, 5, 6};
8
9        int aLen = array1.length;
10        int bLen = array2.length;
11        int[] result = new int[aLen + bLen];
12
13        System.arraycopy(array1, 0, result, 0, aLen);
14        System.arraycopy(array2, 0, result, aLen, bLen);
15
16        System.out.println(Arrays.toString(result));
17    }
18}

1public static void main(String[] args) {
2
3// for each ile cozumu
4        String[] arr3 = {"A", "B", "C","Z","N"};
5        String[] arr4 = {"D", "E", "F","G","U"};
6
7ArrayList<String> list1 = new ArrayList<>(); //[A, B, C, Z, N, D, E, F, G, U]
8
9        for( String each: arr3 ){
10            list1.add( each );
11        }
12        for(String each1 : arr4  ){
13            list1.add(each1);
14        }
15        System.out.println(list1); // [A, B, C, Z, N, D, E, F, G, U]
16    }
17