Polymorphism—or an object’s ability to execute specialized actions based on its type—is what makes Java code flexible.Many design patterns created by the Gang Of Four rely on some form of ...

showConfirmDialog(); showMessageDialog(); and showOptionDialog(). JOptionPane import and methods. For example, the following Java class uses JOptionPane’s showInputDialog() method to prompt for user ...

Java’s main function. Java’s main method is composed of six terms — three reserved words, the main method name, a reference type and a variable name: public – Java’s main function requires a public ...