# About Debugging Multi-Tier Programs

Like any Java applet or application, you can debug a multi-tier program from within the JDeveloper design environment. You may need to configure the debugging environment to specify source root directory.

Debugging is otherwise very similar to debugging any other Java program:

1. Select multi-tier program project file and choose Run | Debug from the JDeveloper tool bar, or click the Debug icon. Alternatively, right-click on the project file and choose Debug.
2. Debug your multi-tier program by setting breakpoints and so on as you would any other Java application.

   > Note: As in debugging any Java application, you need to set at least one breakpoint before you launch the Debugger.

Related Topics:
Debugging a Project in JDeveloper