Learn how to use a switch statement in Java to execute different blocks of code based on a variable or expression. Discover the syntax, rules, examples, use cases, advantages, limitations, and new ...

Java’s main function. Java’s main method is composed of six terms — three reserved words, the main method name, a reference type and a variable name: public – Java’s main function requires a public ...

Java 8 introduced predefined functional interfaces (java.util.function) so that developers don’t have create our own functional interfaces for common tasks. Here are a few examples: ...

child of #14961:. Switch statements and expressions in Java traditionally throw a NullPointerException if the selector expression evaluates to null. This necessitates an external null check before ...