After writing a java file using software such as idea, or when the encoding format of cmd is wrong, a compilation prompt will appear showing unmappable characters encoding GBK. This is essentially caused by a coding error. I searched online and found nothing. The solution, I found this simple solution when I was exploring, and I would like to share it with you here.
Go directly to the tutorial below:
1. Open the java file to be compiled with Notepad
2. Click File in the upper left corner and select Save As
3. Change the encoding below from UTF-8 to ANSI, and then save it.
The error disappears after compiling again.
Please give it a like if it is useful, your support is my biggest motivation!
o(*▽*)q