array of strings into a full string code example

Example 1: java collapse string array

String[] array = {"0","1","2","3","4","5","6","7","8","9"};
String s = String.join(" ", array); //<- (delimiter, target array)
Syste.out.println(s);

Output:
0 1 2 3 4 5 6 7 8 9

Example 2: java srting array to string

Arrays.toString(charArr);