When working with arrays, the Arrays class can be particularly helpful. In this posting, I’ll look at how this class simplifies the copying of arrays and providing String representation of arrays.

As my example later in this post will demonstrate, the multi-dimension deepToString will produce expected results even for single-dimension arrays.

For example, you can take two string arrays and display their contents in two parallel columns using two loops. The first loop runs through both arrays and finds the length of the longest string ...

The real strength of regular expressions however, lies in the handling of repetition. To illustrate this let’s take the example of needing to determine if a string contains a valid phone number.

Java JOptionPane input example The best way to teach the concept of Java user input to new software developers is to show them how to use the highly visual and user-friendly JOptionPane class from the ...