java string 删除字符,从Java中的String中删除字符

I am trying to remove the .xml part of a file name with the following code:

String id = fileR.getName();

id.replace(".xml", "");

idList.add(id);

The problem is that it is not removing it and I have no clue why it won't remove the target text.

EDIT: Actually I realize that the replace function won't find the .xml, so I guess the question is, how do I get rid of those last 4 characters?

Here is the string that is being passed in:

0b14d501a594442a01c6859541bcb3e8164d183d32937b851835442f69d5c94e.xml

Thanks,

解决方案

Strings in java are immutable. That means you need to create a new string or overwrite your old string to achieve the desired affect:

id = id.replace(".xml", "");