I need to read classes contained in a Java package. Those classes are in classpath. I need to do this task from a Java program directly. Do you know a simple way to do?
List<Class> classes = readClassesFrom("my.package")
How do I read all classes from a Java package in the classpath?
Admin
1
Viewed 131371
15 Answers
Scannotation and Reflections use class path scanning approach:
Reflections reflections = new Reflections("my.package");
Set<Class<? extends Object>> classes = reflections.getSubTypesOf(Object.class);
Another approach is to use Java Pluggable Annotation Processing API to write annotation processor which will collect all annotated classes at compile time and build the index file for runtime use. This mechanism is implemented in ClassIndex library:
Iterable<Class> classes = ClassIndex.getPackageClasses("my.package");
Related