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.

According to the Java Enhancement Proposal 445: …these changes allow us to write Hello, World! with no access modifiers, no static modifiers, and no String[] parameter, so the introduction of these ...

The "instanceof" operator existed in Java 11 as a means of checking whether an object belongs to a certain class. This is still how it is used in the later version, but a few improvements have ...