Creational Design Pattern: Builder Pattern

The Builder Pattern is a design pattern that involves constructing a complicated thing by employing a step-by-step method with simple objects. It is mostly employed in situations where an object cannot be generated in a single step, such as during the de-serialization process of a complex object.

 

The primary benefits of the Builder Pattern are as follows: 

• It offers distinct segregation between the production and portrayal of an object. 
• It offers enhanced command over the construction process. 
• It enables the modification of the internal representation of objects.

Source code of Menu.java

package com.t4b.test.java.dp.cp.bp; class Menu { }

Source code of ToolBar.java

package com.t4b.test.java.dp.cp.bp; class ToolBar { }

Source code of MainWindow.java

package com.t4b.test.java.dp.cp.bp; class MainWindow { Menu menu; ToolBar toolBar; public Menu getMenu() { return menu; } public void setMenu(Menu menu) { this.menu = menu; } public ToolBar getToolBar() { return toolBar; } public void setToolBar(ToolBar toolBar) { this.toolBar = toolBar; } }

Source code of WindowBuilder.java

package com.t4b.test.java.dp.cp.bp; class WindowBuilder { public static MainWindow createWindow() { MainWindow window = new MainWindow(); window.setMenu(new Menu()); window.setToolBar(new ToolBar()); return window; } }

Source code of TestMain.java

package com.t4b.test.java.dp.cp.bp; public class TestMain { public static void main(String[] args) { WindowBuilder.createWindow(); } }

Happy Exploring!