Constructor Argument Type and Index Matching - Spring Framework

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package examples;

public class ExampleBean {

// No. of years to the calculate the Ultimate Answer

private int years;

// The Answer to Life, the Universe, and Everything

private String ultimateAnswer;

public ExampleBean(int years, String ultimateAnswer) {

this.years = years;

this.ultimateAnswer = ultimateAnswer;

}

}

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For the above case we can use the ‘type’ attribute incdating the argument type to avoid ambiguity.
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<bean id="exampleBean" class="examples.ExampleBean">

<constructor-arg type="int" value="7500000"/><constructor-arg type="java.lang.String" value="42"/></bean>

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For the above same case we can also use the ‘index’ attribute to supply values to the constructor.
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<bean id="exampleBean" class="examples.ExampleBean">

<constructor-arg index="0" value="7500000"/><constructor-arg index="1" value="42"/></bean>

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