Java Programming

8.3 Implementing Interfaces

A class uses the implements keyword to implement an interface. The implements keyword appears in the class declaration following the extends portion of the declaration.

class classname implements interfacename
{
body of classname
}

here the classname “implements” the interface interfacename. A more general form of implementation may look like this:
class classname extends superclass implements interface1,interface2,…
{
body of classname
}

Example:
interface MyInterface
{
public void method1();
public void method2();
}

class XYZ implements MyInterface
{
public void method1()
{
System.out.println(“implementation of method1”);
}
public void method2()
{
System.out.println(“implementation of method2”);
}

public static void main(String arg[])
{
MyInterface obj = new XYZ();
obj. method1();
}
}
Output:
implementation of method1

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