関連ワード:  compare class and interface in java    difference between class and interface in java    difference between class and interface in java with example    difference between class and interface in javascript    difference between class and interface in java geeksforgeeks    compare abstract class and interface in java    difference between abstract class and interface in java    difference between abstract class and interface in java 8    difference between abstract class and interface in java with example    difference between class and interface in java javatpoint