How to get all imports defined in a class using java reflection?
I just wanna know the list of all import defined in a class using reflection
You can't because the compiler doesn't put them into the object file. It throws them away. Import is just a shorthand to the compiler.
I think you can use Qdox to get all the imports in a class which is not actually through reflection, but it can serve your purpose :
String fileFullPath = "Your\\java\\ file \\full\\path";
JavaDocBuilder builder = new JavaDocBuilder();
builder.addSource(new FileReader( fileFullPath ));
JavaSource src = builder.getSources()[0];
String[] imports = src.getImports();
for ( String imp : imports )
{
System.out.println(imp);
}
Imports are a compile-time feature - there's no difference to the compiled code between a version which uses the full name of the type everywhere it's mentioned, a version which imports everything using a *, and a version which imports classes by full name.
If you want to find all the types used within the compiled code, that's a slightly different matter. You may want to look at BCEL as a way of analyzing bytecode.