在Java项目文件夹中包括run.bat和compile.bat有什么作用？

Question

As part of a college Java course project I've been asked to include a compiler.bat and a run.bat file in the projects root folder.

From attempts to get these to do anything, I can't get them to work on OSX 10.13 (High Sierra).

From reading Google, and SO results these seem to be windows relevant files only?

Am not sure about there relevance but they are a requirement of the project so I'd like to understand what's going on or required.

// compiler.bat ( 0775 Permissions )
@echo off
javac "./App.java"
pause  


// run.bat ( 0775 Permissions )
@echo off
java "./App"
pause  

And both sit in the same directory, beside App.Java.

Answer 1

If you take a look at the compiler.bat , all it really does is call javac . This is used to compile the App.java file, as described here . It basically turns the written java code into a *.class file which contains the Java bytecode. This step is necessary for running any java program. There are a lot of explanations on the java bytecode available, for example here .

run.bat is responsible for running the programm. It takes the compiled code and starts the program.

These to steps are necessary for running java programs, so they are for example also described here

Of course you don't need to use *.bat files for this. You can just as well use the same command from your command line:

javac "./App.java"
java "./App"