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In the following article, our focus will be on understanding the concept of inheritance in Java, exploring the practical applications of interface in Java, delving into the evolutionary enhancements made to interfaces across different Java versions, and finally, we will examine a Java program that demonstrates the implementation of an interface through a practical example.<\/p>\n
The main purpose of the interface in java is to provide security through an abstraction. An interface refers to the blueprint of the class. An interface contains abstract and static methods in it.<\/p>\n
The interface is used to achieve 100% abstraction in java. This is because java interfaces only contain abstract methods.<\/p>\n
Abstract methods are a type of method which do not have the implementation of the method. This means, it does not have a body, it only contains a declaration.<\/p>\n
One more additional application of the java interfaces is that we can achieve multiple inheritances with help of an interface which is not possible to achieve using classes.<\/p>\n
Below is some improvement in the java interface according to java versions.<\/p>\n
The interface<\/strong> keyword is used to declare the java interface. The java interfaces focus on security by providing full abstraction. In the interface, all the methods have empty bodies, and all the fields and members are public, static, and final by default. Let\u2019s see the syntax to define the interface in java.<\/p>\n In the above syntax, we have defines an interface using the interface<\/strong> keyword followed by the name of an interface. Inside the interface, we can define all the abstract methods and we can also declare constant fields inside it. Let\u2019s see an interface program in java to understand it better.<\/p>\n\t\t\t\t\t\tinterface interface_name{\n \/\/ define all the abstract methods\n \/\/ declare constant fields\n}<\/code><\/pre>\n