Decoupling in java using interface

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• MK

  Manali Kadam7y agoPosted Jan 9, 2019, 9:55 PM

  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 Satasiya8y agoPosted Mar 23, 2018, 3:44 AM

  Hi Vikas, 

  i have written this sample code for decoupling in java using interface. I hope you can understand better. 

  1. File: Main.java  
  2.   
  3. public class Main {  
  4.   public static void main(String[] a) {  
  5.     MessageData source = new SimpleMessageData("Hello, C-Sharp Corner");  
  6.     MessageReporter destination = new StdoutMessageReporter();  
  7.   
  8.     destination.write(source.getMessage());  
  9.   }  
  10. }  
  11.   
  12. interface MessageReporter {  
  13.   
  14.   void write(String message);  
  15.   
  16. }  
  17.   
  18. interface MessageData {  
  19.   
  20.   String getMessage();  
  21.   
  22. }  
  23.   
  24. class StdoutMessageReporter implements MessageReporter {  
  25.   
  26.   public void write(String message) {  
  27.     System.out.println(message);  
  28.   }  
  29. }  
  30.   
  31. class SimpleMessageData implements MessageData {  
  32.   private final String message;  
  33.   
  34.   public SimpleMessageData() {  
  35.     this("Hello,  C-Sharp Corner");  
  36.   }  
  37.   
  38.   public SimpleMessageData(String message) {  
  39.     this.message = message;  
  40.   }  
  41.   
  42.   public String getMessage() {  
  43.     return this.message;  
  44.   }  
  45. }   

  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