We then use the application class loader to load the java.util.ArrayList class. If the class is found and loaded successfully, we print its name to the console.

If you’ve read my Java 101 tutorial introducing static classes and inner classes, you should be familiar with the basics of working with nested classes in Java code. In this associated tip, I ...

If this is an application requirement, the three best ways to solve the ‘multiple values per key in a map in Java’ problem are: Stick with the standard APIs and add a collection class like a ‘Vector’ ...

For example, all the collection classes in the JDK hold data as objects. If a developer has a set of int values they want to store in an ArrayList, it can’t be done. Unless, of course, they use a ...