A public method should never be called by another public method within the same class hierarchy. It should only be called by other classes via the classes' public interface. Class calls might not be ...

It is considered good practice to name Java methods using “camel case.” As we aren’t allowed spaces, camel case gets around this by capitalizing every word except the first one.

In Java, we can implement the functional interface with a lambda expression and pass it to a method, then execute the function after an operation is finished. Here’s how that looks in code: ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

See the Java 101 Java interfaces tutorial for a more in-depth introduction to using interfaces in your Java programs, including where and where not to use default, static, and private methods.

showOptionDialog (). JOptionPane import and methods For example, the following Java class uses JOptionPane’s showInputDialog() method to prompt for user input, and then displays a message back to the ...