Latest release of the JVM language also features hundreds of new and improved extension methods including 10x faster arrays.

Learn the four types of polymorphism in Java, then start using subtype polymorphism to execute different forms of the same Java method.

instanceof 是 Java 中的一个二元操作符，它的作用是测试左边的对象是否是它右边的类的实例，返回 boolean 的数据类型。 Object 是所有类的基类。 null instanceof Ob… ...

Pattern matching was first introduced to the instanceof operator in Java 16 (JEP 394), which enabled the operator to take a type pattern and perform pattern matching.

instanceof是Java里的一个二元操作符，类似于 ==、>、<等操作符。 在进行向下转型时， 我们可以使用 instanceOf用于类型检查，判断某个对象是否属于指定的类型，如果属于则返回true，否则返回false。

The instanceof operator allows you to check the validity of a IS A relationship. If at any point of time, we are not sure about this and we want to validate this at runtime, we can do the following ...

Pattern Matching for instanceof enhances Java with pattern matching for the instanceof operator. Java Record enhances Java with records, which are classes that act as transparent carriers for ...

The instanceof operator is used to test if an object is of a given type. In turn, the introduction of Java Records cuts down on the verbosity of Java and provides a compact syntax for declaring ...