Right click on the project in which you want to put jar file. A window will open like this

Click on the AddExternal Jars there you can give the path to that jar file
Answer from Ram kiran Pachigolla on Stack OverflowRight click on the project in which you want to put jar file. A window will open like this

Click on the AddExternal Jars there you can give the path to that jar file
As of rev 17 of the Android Developer Tools, the correct way to add a library jar when.using the tools and Eclipse is to create a directory called libs on the same level as your src and assets directories and then drop the jar in there. Nothing else.required, the tools take care of all the rest for you automatically.
How do I add jar files to classpath? Specifically, I am using Eclipse and I want to add Quartz scheduler jar files
java - How to add a jar to the classpath in eclipse - Stack Overflow
add jar files to classpath to eclipse - Stack Overflow
Eclipse: Adding all the jars from a folder in java classpath - Stack Overflow
Videos
Instead of using a folder outside of your project, copy all necessary JARs into a lib/ folder inside of your project.
Now you can select all JARs in that folder, right click -> Build Path -> Add To Build Path.
Alternatively, you can define a "User Library" which contains all the JARs and add that single item to your project's build path.
But the best solution IMO, is to use Maven for this. Get the M2E Plugin for Eclipse and convert your project to a Maven project. Now you can use "Add Dependency" to add millions of other project (including everything they need) to your project. Maven will download and manage the dependencies for you.
Not without a Plug-in. I do not know why this feature is not a basic part of eclipse.
https://github.com/benjchristensen/SimpleDirectoryContainer_EclipsePlugin