How to import a jar in Eclipse

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How do I import a jar in Eclipse

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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

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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

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Right Click on the Project  Click on Build Path  Click On Configure Build Path  Under Libraries  Click on Add Jar or Add External Jar

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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

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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

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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

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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

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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

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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

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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

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