Java 12

Java 12 (2019):

1. Switch expressions (preview): Enhanced switch statement to work as an expression.

String result = switch (day) {
    case MONDAY, FRIDAY, SUNDAY -> "Weekend";
    case TUESDAY -> "Long day";
    case THURSDAY, SATURDAY -> "Short day";
    case WEDNESDAY -> "Midweek";
    default -> "Unknown day";
};

1. Microbenchmark Suite: Added JMH benchmarks to the JDK source code.