Java Replace & ReplaceAll

Some characters need to be replaced in the Java string, with up to two methods of replace and ReplaceAll. These two methods need to be noted when they are used:

Replace

Public String replace (charsequence target, charsequence replacement)

Added in API Level 1

Returns A copy of this string after replacing occurrences of target replaced with replacement . The string is processed from the beginning to the end.

Throws

NullPointerException
If target or replacement is null .

As you can see from the comments above, the method is returned with the replacement character copy, and the original string has not changed.

Java Replace & ReplaceAll