As demonstrated in the Arrays section of the Java Tutorials, the System class provides an arraycopy method that can be used to copy the contents from one array into another. The method below shows ...

One of the most common needs with collections is sorting. Java has long had a built-in Arrays.sort method, and Collections.sort allows for sorting by natural order or using a custom comparator.

you'll need to answer important Java garbage collection interview questions to land the job. Here are 10 of the most common and important Java garbage collection interview questions that any technical ...

Heap memory allocation for Java is even cheaper than using malloc from the C runtime. Note: Whereas individual object allocation is very cheap, the rate at which minor collection must occur is ...

DevOps professionals who tend real-time Java applications are wont to ask for a mechanism to force Java garbage collection and free up a few megabytes in memory. Unfortunately, this desire to ...

The Java Platform provides the most commonly used data structures in the form of the Collections Framework, and it provides a rich API to operate on them. In this first article in a two-part ...

You can add one or several random numbers into your array variables, but Java does not guarantee that each number is unique. Right-click the Java file you want to edit and select "Open With." ...

I haven't used the apache collections library, but guava is the very first thing I add to any new java project. Even if you completely exclude the collections part altogether, it is still insanely ...