How to Change an Eclipse Default Project into a Java Project

How to change an Eclipse default project into a Java project

Open the .project file and add java nature and builders.

<projectDescription>
    <buildSpec>
        <buildCommand>
            <name>org.eclipse.jdt.core.javabuilder</name>
            <arguments>
            </arguments>
        </buildCommand>
    </buildSpec>
    <natures>
        <nature>org.eclipse.jdt.core.javanature</nature>
    </natures>
</projectDescription>

And in .classpath, reference the Java libs:

<classpath>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
</classpath>

Convert Eclipse project type from general to Java

Under Project Properties -> Project Facets -> Convert to faceted form... you can select Java - this will add the Java functionalities to your project. There you can also add other facets like Dynamic Web Module if necessary.

From what you have written the project was checked out correctly. The option Check out as a project configured using the New Project Wizard is applicable when the .project file does not exist in the repository and you have to select the project type manually. It will only create a new Eclipse project locally.

How do I make my Eclipse project a Java project?

Right-click the project, and select properties. On the build path menu, add the system library->JRE.

You can then try to run the project as follows: Click the dropdown arrow next to the run button, and pick run configurations. On the left, add a new configuration, and select its project to be the project you imported. Also select the main class accordingly. You can now run this configuration and it should run the project.

Edit: This may not work depending on the configuration.

How to change the Eclipse default workspace?

If you mean "change workspace" go to File -> Switch Workspace

How do I change a Java project's bin folder in Eclipse?

You can change the folder name from bin to something else.

Right click on your project and select Properties.
And then click on Java Build Path.
On the right side you can see the tabs Source, Projects, Libraries,...

Click on Source. Check the Default output folder:. There you can browse and select the different folder you want.

But you cannot change the directory. For example if your project is in D: drive you cannot keep the output folder in C: drive.

How to set default JDK for new Maven projects in Eclipse?

In your project POM add

  <properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

This will apply to maven build cycle, and eclipse m2e integration plugin will pickup those as well. Just remember to maven refresh project after changing such settings in order for eclipse to apply (usually alt+f5 - Refresh Maven project.

If you have parent-child modular structure, you cant put properties into parent POM. It is also possible to "globally" add properties to all projects on given machine using settings.xml file like described here Injecting POM Properties via Settings.xml

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