Classes, fields, methods ... Java supports four access levels: private, public, protected, and package (the default). Java provides three keywords that correspond to the first three access ...

When default methods were introduced in Java 8, some developers thought they would be the same as abstract classes. That’s not true, however, because interfaces can’t have state. A default ...

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...