converter int array para string java

1int[] array = { 1, 2, 3, 4, 5 };
2String s = String.join("", IntStream.of(array).mapToObj(String::valueOf).toArray(String[]::new));
3System.out.println(s); // 12345

1int[] nums = {5,1,2,11,3}; //List or Vector
2Arrays.sort(nums); //Collections.sort() for List,Vector
3String a=Arrays.toString(nums); //toString the List or Vector
4String ar[]=a.substring(1,a.length()-1).split(", ");
5System.out.println(Arrays.toString(ar));