Decoupling in java using interface

Question

How can we achieve decoupling in java by using interfaces with example ,

and how this is very use full when we changes in one part of code then it doesn't effect

another part of code or section or class

Please explain in detail

Gratitude in advance

Manali Kadam · Answer

Sample Program of Decoupling in java using interface: File: Main.java public class Main { public static void main(String[] a) { MessageData source = new SimpleMessageData(Hello world); MessageReporter destination = new StdoutMessageReporter(); destination.write(source.getMessage()); } } interface MessageReporter { void write(String message); } interface MessageData { String getMessage(); } class StdoutMessageReporter implements MessageReporter { public void write(String message) { System.out.println(message); } } class SimpleMessageData implements MessageData { private final String message; public SimpleMessageData() { this(Hello world); } public SimpleMessageData(String message) { this.message = message; } public String getMessage() { return this.message; } }

Nikunj Satasiya · Answer

Hi Vikas i have written this sample code for decoupling in java using interface. I hope you can understand better. File: Main.java public class Main { public static void main(String[] a) { MessageData source = new SimpleMessageData( Hello C-Sharp Corner ); MessageReporter destination = new StdoutMessageReporter(); destination.write(source.getMessage()); } } interface MessageReporter { void write(String message); } interface MessageData { String getMessage(); } class StdoutMessageReporter implements MessageReporter { public void write(String message) { System.out.println(message); } } class SimpleMessageData implements MessageData { private final String message; public SimpleMessageData() { this ( Hello C-Sharp Corner ); } public SimpleMessageData(String message) { this .message = message; } public String getMessage() { return this .message; } } please follow this link for detailed information regarding decoupling in java using interface : https://stackoverflow.com/questions/30784215/what-does-decoupling-two-classes-at-the-interface-level-mean