Sorted Arrays Merged

public class MergedArrays {

    public static void main(String[] args) {
        int[] array1={2,4,5,6,7};
        int[] array2={1,3,8,9,10};
        int[] array3=new int[array1.length+ array2.length];
        array3= merge(array1, array2);

        for (int e: array3)
            System.out.print(e+ " ");

    }

    public static int[] merge(int[] arr1, int[] arr2){
        int counter=0;
        int countArr1=0;
        int countArr2=0;
        int[] merged= new int[arr1.length+arr2.length];

        while (counter<(arr1.length+arr2.length)){

            if (arr1[countArr1]<arr2[countArr2]){
                merged[counter]= arr1[countArr1];
                    counter++;
                    countArr1++;
                if (countArr1>=arr1.length){
                    while (countArr2< arr2.length)  {
                        merged[counter]= arr2[countArr2];
                        counter++;
                        countArr2++;
                    }
                }

            }
                    else {
                merged[counter]= arr2[countArr2];
                    counter++;
                    countArr2++;

                        if (countArr2>=arr2.length){
                    while (countArr1<arr1.length) {
                        merged[counter]= arr1[countArr1];
                        counter++;
                        countArr1++;
                    }
                }

                    }

        }
                return merged;
    }

}