How do I import a jar in Eclipse?
You can add a jar in Eclipse by right-clicking on the Project → Build Path → Configure Build Path. Under Libraries tab, click Add Jars or Add External JARs and give the Jar. A quick demo here.
The above solution is obviously a "Quick" one. However, if you are working on a project where you need to commit files to the source control repository, I would recommend adding Jar files to a dedicated library folder within your source control repository and referencing few or all of them as mentioned above.
Adding external Jar is not smart in case you want to change the project location in filesystem.
The best way is to add the jar to build path so your project will compile if exported:
Create a folder called lib in your project folder.
copy to this folder all the jar files you need.
Refresh your project in eclipse.
Select all the jar files, then right click on one of them and select Build Path -> Add to Build Path
Two choices:
1/ From the project:
2/ If you have already other jar imported, from the directory "References Libraries":
Both will lead you to this screen where you can mange your libraries:
Here are the steps:
click File > Import. The Import window opens.
Under Select an import source, click J2EE > App Client JAR file.
Click Next.
In the Application Client file field, enter the location and name of the application client JAR file that you want to import. You can click the Browse button to select the JAR file from the file system.
In the Application Client project field, type a new project name or select an application client project from the drop-down list. If you type a new name in this field, the application client project will be created based on the version of the application client JAR file, and it will use the default location.
In the Target runtime drop-down list, select the application server that you want to target for your development. This selection affects the run time settings by modifying the class path entries for the project.
If you want to add the new module to an enterprise application project, select the Add project to an EAR check box and then select an existing enterprise application project from the list or create a new one by clicking New.
Note: If you type a new enterprise application project name, the enterprise application project will be created in the default location with the lowest compatible J2EE version based on the version of the project being created. If you want to specify a different version or a different location for the enterprise application, you must use the New Enterprise Application Project wizard.
Click Finish to import the application client JAR file.
Just a comment on importing jars into Eclipse (plug-in development) projects:
In case you are developing Eclipse plug-ins, it makes sense to use Eclipse's native bundling mechanism instead of just importing the jar into a plug-in project. Eclipse (or better its underlying OSGi runtime, Equinox) uses so-called bundles which contain some more information than plain jars (e.g., version infos, dependencies to other bundles, exported packages; see the MANIFEST.MF file). Because of this information, OSGi bundles can be dynamically loaded/unloaded and there is automatic dependency resolution available in an OSGi/Eclipse runtime. Hence, using OSGi bundles instead of plain jars (contained inside another OSGi bundle) has some advantages.
(BTW: Eclipse plug-ins are the same thing as OSGi bundles.)
There is a good chance that somebody already bundled a certain (3rd party) library as an OSGi bundle. You might want to take a look at the following bundle repositories:
http://www.springsource.com/repository/app/
http://download.eclipse.org/tools/orbit/downloads/
http://www.osgi.org/Repository/HomePage
Eclipse -> Preferences -> Java -> Build Path -> User Libraries -> New(Name it) -> Add external Jars
(I recommend dragging your new libraries into the eclipse folder before any of these steps to keep everything together, that way if you reinstall Eclipse or your OS you won't have to rwlink anything except the JDK) Now select the jar files you want. Click OK.
Right click on your project and choose Build Path -> Add Library
FYI just code and then right click and Source->Organize Imports
Jar File in the system path is:
C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar
ojdbc14.jar(it's jar file)
To import jar file in your Eclipse IDE, follow the steps given below.
Right-click on your project
Select Build Path
Click on Configure Build Path
Click on Libraries, select Modulepath and select Add External JARs
Select the jar file from the required folder
Click and Apply and Ok
first of all you will go to your project what you are created
and next right click in your mouse and select properties in the bottom
and select build in path in the left corner and add external jar file add click apply .that's it
In eclipse I included a compressed jar file i.e. zip file. Eclipse allowed me to add this zip file as an external jar but when I tried to access the classes in the jar they weren't showing up.
After a lot of trial and error I found that using a zip format doesn't work. When I added a jar file then it worked for me.
Right Click on the Project.
Click on Build Path.
Click On Configure Build Path.
Under Libraries, Click on Add Jar or Add External Jar.
If you are having a trouble on udemy course of chad on springboot for the importing the jar. Then follow these steps.
Right click on the project.
You will see a option of Build Path, click on it.
You will have a option of Configure Build path, click on it.
Go to libraries.
Then go to the place where you have a jar files make them into a new folder and upload on a new place.
Then click on Add External Jars, you will surely be able to upload it which will help on classpathxmlapplicationcontext as well.
Thank you.
I get this error when I try to run my project.
java.lang.NoClassDefFoundError: org/yaml/snakeyaml/Yaml
I am trying to include the dependency SnakeYaml.jar in my project so my project is only one jar instead of requiring an external dependency.
in my project SnakeYaml.jar is located at /Libs/SnakeYaml.jar
but it is not being loaded at runtime, what can I do to get it to load the resource at runtime?
The best solution to avoid such problems is creating maven based project by eclipse. when you export your project as jar or war files it puts all dependencies in the jar or war files
In Eclipse, to put the dependency packaged inside your project executable jar you can do this:
I cannot post images due to my reputation so will try to explaing it writting.
Make sure the dependency is in your class path: right click the project -> Build Path
Right click your project again and select "Export"
Now choose "Runnable JAR file" (you can filter the list by typing)
In the next dialog choose the right option for you, in your case it could be "Package required libraries into generated JAR"
Hope it helps
I have been trying for hours to import a library to Eclipse. I tried the simplest method that seems to be to copy the folders inside a lib folder inside the project in Eclipse.
Inside the project folder, the folder of the library is lib/org/imgscalr
I am using the code
import static org.imgscalr.*;
What am I doing wrong? I dont know if there is any difference, but I am using a MACBOOK.
I'd like to say that I used the " refresh" and I can see the folder and files there...
If your library is a jar file, then right click the project name and navigate to Build Path.
Select Configure Build Path, and there the Libraries tab. Then choose "Add JAR" or "Add external JAR"(see here and here). The difference between these options is that "Add JAR" is for jars in the project directory, while "Add external JAR" allows for JARs locates anywhere else.
If your "library" is in the form of a folder with classes, follow the steps above but choose "Add Class Folder" instead of "Add JAR".
How to include (NOT ONLY reference) JAR file into existing project? I added it by using Project properties - Build path - add external jar's. But when I export my project, and then import it in another computer, this library was missing.
Drag it into your project view so it appears in the project as any other file.
Right-click the jar in the project view and add to build path.
Put your jars into a directory of your project e.g yourproject/lib so that external libraries are accessed through a relative path. And then use "Add JARs" option to add the jar to build path as in eboix's link.
You want to export your project as an archive (Export -> General -> Archive File), and then import your project as an existing project (Import -> General -> Existing Projects into Workspace). This way the project will be identical to the exported version and all of the configuration will be right.
Oh, and do what the other people suggest and copy the Jar file into the project so you don't have to reference it as an external Jar file (and everything is in one place).
Hi I made one jar file with 3 classes.They work fine they are supporting file for getting HXM data.Now when i made jar i want to use it in my next project.I imported it and now it is in referenced libraries.But i can not find how can i use the libraries. in old project from i take the 3 .class file they have the paths: sk.csabi.hxm.*
but now how can i import and use them?
thanks
Your question isn't very clear but it seems like you're asking how to add the JAR to your project classpath in Eclipse.
What you're looking to do is add the libraries to your project's build path (the class path that will be used while compiling). In Eclipse, you can do this by right-clicking your project and choosing Properties (or hitting [Alt]+[Enter] when the project is selected in Project Explorer, Navigator or Package Explorer views) and then Java Build Path from the sidebar and the Libraries tab where you can add JARs.
Note the difference between Add JARs and External JARs is that External JARs will add an external dependency in your project since the absolute path to the JAR on your filesystem will be put into your project's configuration. With Add JARs you can select JARs from within your workspace.
I find it to be a good practice to create a lib folder (at the same level as my src folder) and put all my JARs in there and then add them to the build path with the Add JARs option. This makes the project portable since there are only relative paths referring to resources within the project rather than absolute paths or resources from other workspace projects.