A：JDK 26预定于2026年3月17日发布，包含10个主要新功能：原始类型模式匹配的第四次预览、提前时对象缓存、Vector API第十一次孵化、惰性常量和PEM编码的第二次预览、结构化并发第六次预览、deep reflection警告、G1 ...

Java Development Kit (JDK) 26, a planned update to standard Java due March 17, 2026, has reached an initial rampdown phase for bug fixes, with the feature set now frozen. The following 10 features are ...

Learn how to use pattern-matching features in your Java programs, including pattern matching with switch statements, when clauses, sealed classes, and a preview of primitive type pattern matching in ...

Java has been one of the more popular programming languages and computing platforms on the market since Sun Microsystems released it all the way back in 1995. The free-to-download platform has been ...

Experienced Java developers are committed to continuous improvement. We always seek ways to make our code more readable, reliable and efficient. Java's evolution provides a steady stream of powerful ...

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。 不适用的元素 由于 instanceof 是用来判断类实例的，因此 Java 中的八种基本数据类型就不能使用该关键字了 Object 是所有类的基类。因此所有非空 ...

I bet you don’t like writing ugly but necessary boilerplate code or reading it. But, sometimes we need to create logic that has to deal with an object of unknown type and follow different paths ...

Last year, I started to notice a particular phrase cheerfully uttered in my direction when I entered a store, hotel, restaurant, yoga studio — even the venerable halls of the JFK Delta SkyClub: ...