Using the Eclipse projects for ddmuilib. ddmuilib requires SWT to compile. SWT is available in the depot under prebuild/<platform>/swt Because the build path cannot contain relative path that are not inside the project directory, the .classpath file references a user library called ANDROID_SWT. In order to compile the project, make a user library called ANDROID_SWT containing the jar files available at prebuild/<platform>/swt. You also need a user library called ANDROID_JFREECHART containing the jar files available at prebuild/common/jfreechart.