関連ワード:  how to use static class in java    how to access static class in java    how to use static inner class in java    how to access static inner class in java    how to access nested static class in java    how to access static variable outside class in java    how to access static variable from another class in java    how to access static method from another class in java    how to access static method outside the class in java    how to access non static inner class in java