Amit Kumar Das

• May 17th, 2015

 

Spring framework provides facility to inject bean using factory method. To do so, we can use two attributes of bean element.

1. factory-method: represents the factory method that will be invoked to inject the bean.

2. factory-bean: represents the reference of the bean by which factory method will be invoked. It is used if factory method is non-static.

There can be three types of factory method:

1) A static factory method that returns instance of its own class. It is used in singleton design pattern.
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2) A static factory method that returns instance of another class. It is used instance is not known and decided at runtime.
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3) A non-static factory method that returns instance of another class. It is used instance is not known and decided at runtime.
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