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I've been trying to grok the org.apache.commons.beanutils library for a method/idiom to evaluate for equality all properties between 2 instances i.e. a generic equals() method for beans.
Is there a simple way to do this usnig this library? Or am I going about this the wrong way? Thanks.
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Description. In Apache Commons Beanutils, you can compare the JavaBean objects by using the BeanComparator class based on a specified shared property value. This can be done by using the org. apache.
In Java, the == operator compares that two references are identical or not. Whereas the equals() method compares two objects. Objects are equal when they have the same state (usually comparing variables).
The compare() method in Java compares two class specific objects (x, y) given as parameters. It returns the value: 0: if (x==y) -1: if (x < y)
We can compare String in Java on the basis of content and reference. It is used in authentication (by equals() method), sorting (by compareTo() method), reference matching (by == operator) etc. There are three ways to compare String in Java: By Using equals() Method.
Try EqualsBuilder.reflectionEquals() of commons-lang. EqualsBuilder has a set of methods to include all fields, all non-transient fields and all but certain fields.
If all else fails, the code could serve as a good example how to implement this.
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