Spring Tutorial – Injecting Objects

There are Two ways of Injecting Objects in Spring.

Using Getter and Setters
Using Constructors

When you are trying to inject Objects using the getters and setters, you need to define Bean as

<bean id="gb1" class="GeneralBean">
               <property name="message" value="Hello"></property>
</bean>

</bean>

The above Bean Definition would inject an Object Of class “GeneralBean” and set the value “message” to “Hello”

If you want to inject Object using Constructors then you have to define the bean as shown below,

<bean id="gb2" class="GeneralBean">
	<constructor-arg value="hello constr"></constructor-arg>
</bean>

<constructor-arg value="hello constr"></constructor-arg>

</bean>

Also, you need to define a Constructor in the POJO class.