2015-08-13 23:54:40 +02:00
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---
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layout: pattern
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title: Builder
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folder: builder
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2015-08-15 18:03:05 +02:00
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permalink: /patterns/builder/
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2015-08-20 21:40:07 +02:00
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categories: Creational
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tags: Java
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2015-08-13 23:54:40 +02:00
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---
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**Intent:** Separate the construction of a complex object from its
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representation so that the same construction process can create different
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representations.
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**Applicability:** Use the Builder pattern when
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* the algorithm for creating a complex object should be independent of the parts that make up the object and how they're assembled
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* the construction process must allow different representations for the object that's constructed
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**Real world examples:**
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* [java.lang.StringBuilder](http://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html)
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2015-08-15 18:03:05 +02:00
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* [Apache Camel builders](https://github.com/apache/camel/tree/0e195428ee04531be27a0b659005e3aa8d159d23/camel-core/src/main/java/org/apache/camel/builder)
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