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.

I’ll also briefly demonstrate nesting interfaces with static methods, also known as static method interfaces. More about Java interfaces. For an introduction to Java interfaces, ...

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, ... You will notice that we have updateCustomerOrderAsShipped-- a public method in ...

The functional Consumer interface is used extensively across the Java API, with a number of classes in the java.util.function package, such as ObjIntConsumer, BIConsumer and IntConsumer providing ...