scola

import os
import glob

def getalljava(folder):
    for file in os.listdir(folder):
        if os.path.isdir(os.path.join(folder, file)):
            getalljava(os.path.join(folder, file))
        elif file.endswith(".java") or file.endswith("java.txt"):
            alljava.append(os.path.join(folder, file))