{"id":700,"date":"2010-08-02T19:54:08","date_gmt":"2010-08-02T14:24:08","guid":{"rendered":"http:\/\/JitendraZaa.com\/blog\/?p=700"},"modified":"2010-08-02T19:54:08","modified_gmt":"2010-08-02T14:24:08","slug":"interface","status":"publish","type":"post","link":"https:\/\/www.jitendrazaa.com\/blog\/java\/interface\/","title":{"rendered":"Interface in JAVA"},"content":{"rendered":"

Interface & Its Advantage:-<\/strong><\/p>\n

1. If all the methods in the class is abstract then the class is nothing but the interface<\/strong>.<\/p>\n

2. We cannot create an object<\/strong> of interface.<\/p>\n

3. To implement the interface by child class keyword “implements”\u009d<\/strong> is used.<\/p>\n

4. Interface is defined by using keyword interface.<\/strong><\/p>\n

5. If a class implements interface but does not implements methods, then the<\/strong> class<\/strong> is abstract class.<\/p>\n

6. We can assign the object of class which implements the interface<\/strong> of type of \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0that interface.<\/p>\n

\ninterface Duck\n{\n    Void DuckType();\n    Void DuckProperty();\n}\n\nclass BlackDuck implements Duck\n{\n Public void DuckType()\n {\n     System.out.println(\"Black Duck\"\u009d);\n }\n\n Public void DuckProperty()\n {\n   System.out.println(\"Swim, Quack \u00a0and Fly\"\u009d);\n }\n }\n\nclass TestDuck\n{\n Public static void main(String args[])\n {\n     BlackDuck obj=new BlackDuck();\n     Obj.DuckType();\n     Obj.DuckProperty();\n }\n}\n<\/pre>\n
Advantages of Interface:-<\/strong><\/p>\n