How Do I Remove All Characters from a String in Java

str = str. replaceAll(“X,””); This should give you the desired answer. This solution takes into acount that the resulting String – in difference to replace() – never becomes larger than the starting String when removing characters.

How do I remove a character from a string in Java?

You can use: firstname1 = firstname1. replaceAll(“[0-9]”,””); This will remove all numeric values from String firstName1 .

How do I remove all characters in Java?

Similarly, if you String contains many special characters, you can remove all of them by just picking alphanumeric characters e.g. replaceAll(“[^a-zA-Z0-9_-]”, “”), which will replace anything with empty String except a to z, A to Z, 0 to 9,_ and dash.