How java files are run

First you need to prepare a jdk and copy the bin directory of the jdk, as shown below:

Then set the PATH environment variable Add the bin directory of the JDK, as shown in the following figure:

Open the CMD command line, and use the javac command to compile the java file, as shown in the following figure:

Finally, use the java command to execute the compiled java file, as shown in the figure below:

Complete!

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