Question

What is the equivalent for this C# code in Java?

String newSTr = string.Join(" ", xString.Split(new []{' '}, StringSplitOptions.RemoveEmptyEntries));

Basically the function trims all extra spaces (trailing and spaces inside within the string). Thanks

Let’s say i have this examples:

I    have    this      string.      ==     I have this string.
    I have    this  string   .      ==     I have this string .

Answer 1

"I    have    this      string. ".replaceAll ("\\s\\s+", " ").trim ();

result: “I have this string.”

"I    have    this      string. ".replaceAll ("  +", " ").trim ();

Works with leading/trailing whitespace too.