23 lines
858 B
Markdown
23 lines
858 B
Markdown
|
---
|
||
|
|
layout: pattern
|
||
|
|
title: Builder
|
||
|
|
folder: builder
|
||
|
|
categories: creational
|
||
|
|
tags: pattern_tag
|
||
|
|
---
|
||
|
|
|
||
|
|
**Intent:** Separate the construction of a complex object from its
|
||
|
|
representation so that the same construction process can create different
|
||
|
|
representations.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
**Applicability:** Use the Builder pattern when
|
||
|
|
|
||
|
|
* the algorithm for creating a complex object should be independent of the parts that make up the object and how they're assembled
|
||
|
|
* the construction process must allow different representations for the object that's constructed
|
||
|
|
|
||
|
|
**Real world examples:**
|
||
|
|
|
||
|
|
* [java.lang.StringBuilder](http://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html)
|
||
|
|
* [Apache Camel builders](https://github.com/apache/camel/tree/0e195428ee04531be27a0b659005e3aa8d159d23/camel-core/src/main/java/org/apache/camel/builder)
|