How to represent empty char in Java Character class

Question

I want to represent an empty character in Java as \"\" in String...

Like that char ch = an empty character;

Actually I want to rep

Answer 1

You can only re-use an existing character. e.g. \0 If you put this in a String, you will have a String with one character in it.

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Say you want a char such that when you do

String s = 
char ch = ?
String s2 = s + ch; // there is not char which does this.
assert s.equals(s2);

what you have to do instead is

String s = 
char ch = MY_NULL_CHAR;
String s2 = ch == MY_NULL_CHAR ? s : s + ch;
assert s.equals(s2);