Remove ASCII Question Mark

Question

I have the following String passed from another application.

2�4�9�

(2 4 9 )

I would like to remove question mark ascii characters from the above string.

How could I do this?

Answer 1

According to this Unicode code table , � (or \� ) is the character .

You can remove this unicode character from your string with :

str = str.replaceAll("�", "");

But you should really try to understand why they are there.

Answer 2

string.replaceAll("\u0000.*","").replaceAll("[^a-zA-Z0-9 ]", "");

将删除字符串变量中的空格和标点符号。