Problem: How to load Properties in Java? Properties class has methods to load properties from different sources – InputStream, Reader, and XML file. Here’s an example of Properties.loadFromXML(InputStream).

Problem: How to load Properties in Java? Properties class has methods to load properties from different sources – InputStream, Reader, and XML file. Here’s an example of Properties.load(InputStream).

Problem: How to store Java Properties as XML? It turns out that it’s not only possible, but also easy with the Properties class as you can see in the example in this post.

Problem: How to store Java Properties? Properties class has methods to store/save to different outputs – OutputStream, Writer or even XML file. Here’s an example of Properties.store(OutputStream).

Problem: How to list Java Properties? Properties can be written to PrintWriter or PrintStream as we demonstrate in the example below.

Problem: How to read Java System Properties? In the following example we show how to read single System property, list all, and use default when property is not defined.

Problem: How to do null check in Java? The old way was to do validation manually, but since Java 7 there’s a better way. In the following example we show the difference.