Jenkins reported an error. Illegal character: '\ufeff'. Class, interface or enum are required

After uploading the code, we are preparing to Jenkins Build... Manually , It's the wrong report , As shown in the figure below ：

It's obviously caused by code , Suddenly think of me Java Files are copied from other projects , Let's reset the code

2、 choice GBK

3、 Click on CONVERT

4、 Repeat the above steps , Change the code back UTF-8 Just go