There are many easy projects involving Java coding that beginners can use for practice, the easiest of which is the fortune teller project. This project simply involves writing a script to generate a random number upon the entry of any question, and generating responses associated with those numbers.
Other easy projects include making a simple tax calculator, or a rudimentary time and billing calculator. Programs like phone directories can be fairly easy to make as well and use basic knowledge. Tutorials for many of these projects can be found online with a simple search, as can other suggestions for more basic projects.