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What are beans in java programming?Is having an understanding of Struts vital for learning Spring?
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The Serializable interface provides automatic serialization by using the Java Object Serialization tools. Serializable declares no methods; it acts as a marker, telling the Object Serialization tools that your bean class is serializable.
JavaBeans are classes that encapsulate many objects into a single object (the bean). It is a java class that should follow following conventions: Must implement Serializable. It should have a public no-arg constructor. All properties in java bean must be private with public getters and setter methods.
There are three types of enterprise beans, entity beans, session beans, and message-driven beans. All beans reside in Enterprise JavaBeans (EJB) containers, which provide an interface between the beans and the application server on which they reside.
A JavaBean property is a named feature that can be accessed by the user of the object. The feature can be of any Java data type, containing the classes that you define. For example, if the property name is firstName, the method name would be getFirstName() to read that property. This method is called the accessor.
That depends.
You could be talking about Spring beans, Enterprise Java Beans or some other variant.
The general answer is that beans are some type of generic object (or POJO perhaps) that hold information - almost think of them like their own data type. The distinction is that they typically don't have much in the way of behaviors eg, they only have: simple fields, getters, setters.
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