How can I install the JGraphT distribution offered in this link:
http://sourceforge.net/projects/jgrapht/files/
I do not understand the tree structure of files and its relation with the structure of a project in Eclipse. I would like to run the java code listed in:
http://jgrapht.org/visualizations.html
but I am not able to import the proyect to Eclipse. For example, that .java file is under
jgrapht-0.9.0\source\jgrapht-demo\src\main\java\org\jgrapht\demo
Follow these steps:
1) download the .zip file on that page
2) create a new java project in eclipse
3) unzip .zip file
4) right click on the 'src' folder and select 'import...' from file system
5) select 'src->org' under the unzip files
6) you will need 'jgraph' to run any of the examples
You can import the jars as internal/external jars into your project.
For example, right click on the project -> Build Path -> Configure Build Path
Then go to libraries and 'Add Jars' or 'Add External Jars' (if your jars are located outside the project space), you should now be able to import classes associated with JGraphT.
This works for me: Install JGraphT in Eclipse. I just downloaded jgrapht-1.0.1.zip and I use Eclipse Oxygen (4.7.1). The link above describes the steps in detail. Basically, do the following:
Download jgrapht-x.y.z.zip and extract it.
In Eclipse, create a new Java project.
Add the jars of the extracted jgrapht libraries to your Eclipse user libraries.
Add the just-added user libraries to your project's Build Path as libraries.
Now your project can make use of jgrapht.
Related
I bought a new computer and installed Eclipse on it. After the ADT plugin finished downloading I tried to import my projects (composed of 4 sub-projects), but Eclipse doesn't see them!
I just click "import/general/import existing projects into workspace", select the folder containing the sub projects, hit the open button but Eclipse says "No projects found to import".
I'm using Eclipse Kepler and the projects files are directly taken from Eclipse Juno.
Eclipse need .project file to import the projects into workspace. what you can do is create a new project and copy the source and libraries into that project
Alternative method can be that create a new project and copy the .project file from that project to your project but make sure you edit the .project file and change the name of that project according to your project. read this for more information on .project file
http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fproject_description_file.html
I will suggest you to use the First method .
Make sure that you've tried to:
Refresh everything
Searched for Nested Items
Go to (In the libg-gdx setup) Advanced >> Check Eclipse
And if that doesn't work, add a .project file into the folder manually
I have a simple project that I need to be very easily imported into eclipse and started. When I export my project and import it again it comes with an error saying it is missing a required jar file. This jar file is added to the build path, but does not carry over when the project is exported. Why is this? I have been searching all day for an answer on Google and none have helped.
Would I just have to send the jar file along with the project and have the users manually add it?
Things I have tried:
Going into build path order and export and clicking the jar file.
using a clean workspace for the import / restarting eclipse.
For anyone with a future problem like this one. I was putting the jar in the lib folder and also adding it to my build path, but the jar would not export over. When I added the jar to the WEB-INF / lib folder it successfully carried over with the export.
You may want to try this:
Right click on the imported project select Build Path -> Configure Build Path -> Java build Path -> Libraries Tab and check if the jar file which eclipse says missing is present in the Libraries tab.
If it is present then select it and click Edit, a "File dialog" will pop up, find the desired jar which is in your computer's directory. and click Ok then wait for eclipse to build
the workspace. If it is not present then add it through Add JARs... or Add External JARs...
Export it as an Archive file of the project rather than a jar. Then it's just a matter of someone else importing it as an Existing Project. Exporting it as a jar is only something you do when you want to deploy the jar and run it.
The team in which I'm working doesn't use eclipse and wants the src folder to be setup a certain way. I, on the other hand, am using eclipse. They would like the src folder to have, for example, the following structure: src/main/java/com/* However, they would like package declarations to only have com.* in them. If I go to project->properties and in the source tab remove the src folder as a source folder and then _only add the com.* folder as part of the source_ it will show com.* as a package, but I still have to add the whole path from src down in the .java files. Here's an example of what I have to do in order for eclipse to recognize the packages:
package main.java.com.parser;
And what the team wants is to have main and java just be a folder so the package declaration would just be:
package com.parser;
So although the file structure would still be src/main/java/com/parser, the package name would be as stated in the later example.
Is there a way to do this in eclipse? I've seen some people asking similar questions on here, but they seem to have no concern that the whole path must be part of the package declaration.
I would much prefer not to do this this way, but no one else is using eclipse on this project.
Thanks for any help in advance.
In the Package Explorer, right click the src folder and select Build Path > Remove from Build Path
Then find the src/main/java folder, right click java and select Build Path > Use as Source Folder
Basically this tell eclipse that java is the folder which contains the packages and source files.
P.S. This is a very normal project setup for building with Maven. If you download the m2e (Maven to Eclipse) plugins and choose to create a Maven Project (or import from the pom.xml) then Eclipse will automatically know how to correctly locate the source folder.
I have imported my maven project in eclipse using Import Maven project. It got import in eclipse project explorer, but all the source folder are opening as files and folders, its not opening as java source folder. Since its opening as files and folder, it doesnot have compilation unit, found very difficult to code using it.
What do I need to do inorder to make the source folder as java source folder so that I can code easily?
Select the project and from the context menu choose Maven -> Update Project Configuration (This menu item gets reworded across various maven releases so look for something similar). You may also need to choose Update Dependencies.
In the shell/command line, execute mvn eclipse:eclipse
I just recently downloaded the dom4j library, but for the life of me I have no idea how to access it. I dropped it in the plug-ins folder and rebooted Eclipse, without success. For some reason finding a straight answer for this is more difficult that I thought it would be.
No, don't do it that way.
From your Eclipse workspace, right click your project on the left pane -> Properties -> Java Build Path -> Add Jars -> add your jars here.
Tadaa!! :)
Extract the jar, and put it somewhere in your Java project (usually under a "lib" subdirectory).
Right click the project, open its preferences, go for Java build path, and then the Libraries tab. You can add the library there with "add a jar".
If your jar is not open source, you may want to store it elsewhere and connect to it as an external jar.
For the Android library projects, I do it as in the attached screenshot:
Right click the project, select Properties->Android and in the library section click Add. From here you can select the available libraries.
If you are importing a jar file, then importing them as jar or external jar, as other posters posted would work. I prefer to copy/paste jar file in the libs folder (create one if it doesn't exist) and then import as jar.
If you want to get this library into your library and use it, follow these steps:
You can create a new folder within Eclipse by right-clicking on your project, and selecting New Folder. The library folder is traditionally called lib.
Drag and drop your jar folder into the new lib folder, and when prompted select Copy Files.
Selecting the Project tab at the top of the screen, and click Properties.
Select Java Build Path followed by the Libraries tab.
Click the Add JARs… button and select your JAR file from within the lib folder.
Your JAR file will now appear in both the lib and Referenced Libraries folders. You can explore the JAR's resources by clicking Referenced Libraries.