java - How to copy the entire values of array strings into a single string along with the empty spaces? -

i'm using eclipse, have argument on run configuration:

hello hello hello

apparently, it's on string[] args. there method can concatenate array values along empty spaces between them?

i have tried splicing arrays char arrays, used tostring method(garbage value reason), , stringbuilder. gives values not spaces itself. @@

you can use string.join method:

string[] arr = {"hello", "hello", "hello"}; system.out.println(string.join(" ", arr)); 

string#join available in java 8.

using stringbuilder:

stringbuilder sb = new stringbuilder(); string sep = ""; (string str : arr) {   sb.append(sep);   sb.append(str);   sep = " "; } system.out.println(sb.tostring());