Java replace with null

Program:

Empty Character Literal in Java

An empty char value does not belong to any char , so Java gives a compile-time error. To create an empty char, we either can assign it a null value \0 or default Unicode value \u0000 . The \u0000 is a default value for char used by the Java compiler at the time of object creation.

If you call string. Replace(char oldChar, char newChar ) it will replace the occurrences of a character with another character. It is a one-for-one replacement. Because of this the length of the resulting string will be the same.