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Community driven content discussing all aspects of software development from DevOps to design patterns. Here are the most important concepts developers must know when they size Java arrays and deal ...

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Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions. Programmers frequently need to ...

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...

A very common task in the IT industry is needing to convert between storage size units - bytes, kilobytes, megabytes, gigabytes, terabytes, etc. To make things even more complicated, the POSIX ...

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want. Copying objects ...

Retrofit solution to convert rooftop PV systems into photovoltaic-thermal arrays Scientists in Korea have proposed a simple methodolgy to tranform existing PV systems into photovoltaic-thermal (PVT) ...