What happens to the string when the file is saved to Javac and then to Java?

encoding is the process of turning a string into a byte, and decoding is the process of turning a byte into a string according to the corresponding encoding . a Good article: Understanding coding from the principle-what exactly is coding? What is decoding? What is a byte stream?

The following picture shows the conversion process of string encoding in Java

Unicode and GBK encoded file: Link: https://pan.baidu.com/s/1tnI1xpuqXLEElIKxKLEAGw Password: vp7f

Unicode and Utf-8 code comparison URL: https://unicode-table.com/cn/

What happens to the string when the file is saved to Javac and then to Java?