Advanced Search

An immutable Java class builder

/ Published in: Java
Save to your folder(s)
An immutable (a new object is created for each change) Java class builder pattern example.

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1. public class RadioBuilder {  
  2.      private int buttons;  
  3.      private CDPlayer cdPlayer;  
  4.      private MP3Player mp3Player;  
  5.  
  6.      public static RadioBuilder create() {  
  7.          return new RadioBuilder(4,  
  8.              CDPlayerBuilder.create().build(),  
  9.              MP3PlayerBuilder.create().build());  
  10.      }  
  11.  
  12.      public RadioBuilder(int buttons, CDPlayer cdPlayer, MP3Player mp3Player) {  
  13.          this.buttons = buttons;  
  14.          this.cdPlayer = cdPlayer;  
  15.          this.mp3Player = mp3Player;  
  16.      }  
  17.  
  18.      public RadioBuilder withButtons(int buttons) {  
  19.          return new RadioBuilder(buttons, cdPlayer, mp3Player);  
  20.      }  
  21.  
  22.      public RadioBuilder with(CDPlayer cdPlayer) {  
  23.          return new RadioBuilder(buttons, cdPlayer, mp3Player);  
  24.      }  
  25.  
  26.      public RadioBuilder with(MP3Player mp3Player) {  
  27.          return new RadioBuilder(buttons, cdPlayer, mp3Player);  
  28.      }  
  29.  
  30.      public Radio build() {  
  31.          return new Radio(buttons, cdPlayer, mp3Player);  
  32.      }  
  33.  }

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.