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.

But in Java, once the array size is set, it is permanent. However, there are collection classes in Java that act like a Java array but resize themselves automatically. Any class that extends the List ...