Question

So…, I’ve made a plugin for Eclipse that generates a new java project and ads files from templates, etc… However the code in the /src directory is then uncompilable because I need to add a jar file I have to the libraries tab.

The project is already a Java project via:

org.eclipse.jdt.core.IJavaProject javaProject = org.eclipse.jdt.core.JavaCore.create(proj);
            org.eclipse.jdt.core.IClasspathEntry src = JavaCore.newSourceEntry(folder.getFullPath());
            IClasspathEntry jre = JavaCore.newContainerEntry(new Path(
                    org.eclipse.jdt.launching.JavaRuntime.JRE_CONTAINER), new IAccessRule[0],
                    new IClasspathAttribute[] {
                        JavaCore.newClasspathAttribute("owner.project.facets", "java")
                    }, false);
            IClasspathEntry[] entries = new IClasspathEntry[] {
                    src, jre
            };
            javaProject.setRawClasspath(entries, proj.getFullPath().append("bin"), new NullProgressMonitor());

And now, basically, I need to do programmaticaly, what the button “Add Jars…” does.

Been struggling with this for a while…

Any code tips or a link to a tutorial that DOES EXACTLY THIS would be helpful. Please no links to generic Eclipse plugin tutorials 🙂 as I’ve probably seen them all by now…

Thnx a lot

Answer 1

Here’s how I did it, not sure if your reqs are exaclty the same, but hope it helps in some way…

        IFile file = addJar(project, "/resources/myJar.jar", MY_JAR_TARGET_PATH, monitor); //$NON-NLS-1$
        newcpEntries.add(JavaCore.newLibraryEntry(file.getFullPath(), null, null, false));
        // .....

where addJar() looks something like this:

private static IFile addJar(IProject project, String srcPath, String targetPath, IProgressMonitor monitor) {
    URL srcURL = MyPlugin.getDefault().getBundle().getEntry(srcPath);
    IFile file = project.getFile(targetPath);
    InputStream is = null;
    try {
        is = srcURL.openStream();
        file.create(is, true, monitor);
    } catch (CoreException e) {//...
              } catch (IOException e) {//...
              }
    finally {
        try {
            if (is != null)
                is.close();
        } catch (IOException ignored) {}
    }
    return file;
}