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Read the last section of this article: <a href="http://www.yoda.arachsys.com/java/passing.html" rel="nofollow noreferrer">http://www.yoda.arachsys.com/java/passing.html</a> To quote: <blockquote> This is the real reason why pass by reference is used in many cases - it allows a method to effectively have many return values. Java doesn't allow multiple "real" return values, and it doesn't allow pass by reference semantics which would be used in other single-return-value languages. However, here are some techniques to work around this: <ol> <li>If any of your return values are status codes that indicate success or failure of the method, eliminate them immediately. Replace them with exception handling that throws an exception if the method does not complete successfully. The exception is a more standard way of handling error conditions, can be more expressive, and eliminates one of your return values.</li> <li>Find related groups of return values, and encapsulate them into objects that contain each piece of information as fields. The classes for these objects can be expanded to encapsulate their behavior later, to further improve the design of the code. Each set of related return values that you encapsulate into an object removes return values from the method by increasing the level of abstraction of the method's interface. For instance, instead of passing co-ordinates X and Y by reference to allow them to be returned, create a mutable Point class, pass an object reference by value, and update the object's values within the method.</li> </ol> </blockquote> As a bonus, this section was updated by Jon Skeet :)
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1. POJava: How do I implement a method that takes 2 arrays and returns 2 arrays?
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