Java Tutorial : Default method in Interface

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Java Tutorial : Default method in Interface 

Java Tutorial : Default method in Interface 

Java Tutorial : Default method in Interface 

Java Tutorial : Default method in Interface 

Java Tutorial : Default method in Interface 

Person.java

interface Person
{
    
    void walk();
    
    default void sayHello()
    {
        System.out.println("default Hello...");
    }
}

Student.java

public class Student implements Person
{

    @Override
    public void walk()
    {
        System.out.println("Student Walks slowly ..");
    }

}

Employee.java

public class Employee implements Person
{

    @Override
    public void walk()
    {
        System.out.println("Employee Walks slowly ..");
        
    }
    
    @Override
    public void sayHello()
    {
        System.out.println("Hello by Employee");
        
    }

}

InterfaceTest.java

public class InterfaceTest
{

    public static void main(String[] args)
    {
        Person personStudentRef = new Student();
        personStudentRef.walk();
        personStudentRef.sayHello();
        
        System.out.println("----------------------");
        
        Person personEmployeeRef = new Employee();
        personEmployeeRef.walk();
        personEmployeeRef.sayHello();
    }

}

Output

Student Walks slowly ..
default Hello...
----------------------
Employee Walks slowly ..
Hello by Employee

Click the below link to download the code:
https://sites.google.com/site/javaee4321/java/InterfaceDemo-DefaultMethod-App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/InterfaceDemo-DefaultMethod-App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/d3069ae3fffccb0c6ba4336662b6a2619d880c61/BasicJava/InterfaceDemo-DefaultMethod-App/?at=master

See also:

All JavaEE Viedos Playlist

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Java Collection Framework Tutorial

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