関連ワード:  how to create a class object in java    how to create a class object in javascript    how to declare a class object in java    how to create a new class object in java    how to create inner class object in java    how to create abstract class object in java    how to create scanner class object in java    how to create a list of class objects in java    how to create optional class object in java    how to create nested class object in java