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I am trying to create an application that can interact with a MIDI device, for this I am using the Jmusic library, but after putting the file . jar in my Workspace and have it added to the project, the packages in that library seem not to exist, if I haven’t been specific in my problem, here’s a Print of my screen:
is it problem with the . jar? I’m seeing a tutorials of a guy, and I downloaded on the same site as him...
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I know three possible solutions to the problem:
In Eclipse, right-click on your project folder and follow the path: Build Path > Configure Build Path. On the tab Libraries press the button Add External JARs and select *.jar from JMusic.
The second option would help you better organize dependencies. In this case you would create a folder lib within its design and would copy the *.jar of the JMusic there. After that you right click on the JAR and follow the path: Build Path > Add To Build Path.
A more elegant solution however, is to create a project Gradle and in the configuration file set Jmusic as dependency. During the first build Gradle will download the library and add it to the Buildpath automatically.
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The red exclamation on your project folder icon indicates that you have a problem with your Build Path. Click on the Problems tab and it will give you more details, edit your question and add the information that this tab tells you.
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