We Java developers may often encounter unmappable Character for Encoding errors. The reason for this error is that the source code contains characters not included in the GBK encoding. The solution: The source code contains characters not included in the GBK encoding.

• delete the character
• save the source code file as utf-8 encoding

unmappable character for encoding error. However, after looking it up on the Internet, we know that the class file of Java USES utf-8 encoding. Test2.java is compiled to Test2.class, including the utF-8 encoding conversion process.

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