Java 19

Divide Exact

System.out.println(Integer.MIN_VALUE/-1);
try {
    System.out.println(Math.divideExact(Integer.MIN_VALUE, -1));
} catch(ArithmeticException e) {
    System.out.println("Overflow");
}

-2147483648
Overflow

Default Charset

Java APIs that depend on the default charset will use UTF-8 by default.

Snippet Javadoc

/**
 * The following code shows how to use {@code Optional.isPresent}:
 * {@snippet :
 * if (v.isPresent()) {
 *     System.out.println("v: " + v.get());
 * }
 * }
 */
public void myMethod() {
  // ...
}

/**
 * The following code shows how to use {@code Optional.isPresent}:
 * {@snippet file="ShowOptional.java" region="example"}
 */

ShowOptional.java

public class ShowOptional {
    void show(Optional<String> v) {
        // @start region="example"
        if (v.isPresent()) {
            System.out.println("v: " + v.get());
        }
        // @end
    }
}