How to use java non-standard library on IntelliJ IDEA
- First post *
I will summarize the problems I had while studying java using IntelliJ IDEA.
Utilization of classes not included in the standard in java
Method 1 Get the source code
Method 2 Get a binary module
- Binary module refers to compiled code *
** And, in general, you often get a library with multiple classes in a JAR file ** ** However, the library does not work even if I import it normally! **
** This is because java only searches the path specified by the classpath, so there are two solutions **
① Declare in the environment variable CLASSPATH
(2) Add the -cp option when executing commands such as javac.
The main subject is from here
Let's do the above with the GUI of IntelliJ IDEA!
As an exercise, download the commons-logging: classes for easy logging from the Apache Software Foundation site as a zip. You can download commons-logging from here
Then place the extracted files in the same directory.
It's red and you can see that it can't be used yet.
Right-click and press Add as Library.
This kind of thing will appear, so select your directory and press OK to complete!
You can see that it is working properly. That's it
You may want to try it when a beginner doesn't know how to use / reuse the JAR file for the first time. that's all It was from a novice programmer
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