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Hashtag Jakarta EE #64

Sunday, March 21, 2021 - 06:59 by Ivar Grimstad

Welcome to the sixty-fourth issue of Hashtag Jakarta EE!

$ java -version
openjdk version "16" 2021-03-16
OpenJDK Runtime Environment AdoptOpenJDK (build 16+36)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 16+36, mixed mode, sharing)

Java 16 contains a lot of goodies for us, so go ahead and download it to give it a try. or me, the most important feature in JDK 16 is Records (JEP 395). The reason for this is that it reduces the amount of boilerplate code needed. The possibility to write record Point(int x, int y) { } rather than the entire class listed below really appeals to me. The code never written is the best code, as it is guaranteed not to contain any bugs.

class Point {
    private final int x;
    private final int y;

    Point(int x, int y) {
        this.x = x;
        this.y = y;

    int x() { return x; }
    int y() { return y; }

    public boolean equals(Object o) {
        if (!(o instanceof Point)) return false;
        Point other = (Point) o;
        return other.x == x && other.y = y;

    public int hashCode() {
        return Objects.hash(x, y);

    public String toString() {
        return String.format("Point[x=%d, y=%d]", x, y);

I participated in three sessions at JavaLand 2021. First out on Tuesday was Jakarta EE 9 and Beyond which was followed by a Jakarta EE Panel. On Wednesday, it was time for Mobile Java Web Applications with MVC and OpenDDR where I was presenting together with Werner Keil. Despite some technical difficulties with the streaming platform on Tuesday, the conference went smoothly. Let’s hope that we will be back in Phantasialand for next year’s edition!

Work with Jakarta EE 9.1 continues. An agenda item for the platform call this week is to set a release date for Jakarta EE 9.1. We have also started the work by looking ahead towards the next releases. Currently, there are some interesting discussions happening on the Jakarta EE Platform mailing list regarding the definition of new profile specifications.

Also, note that the platform team requests plan reviews from the specification projects to be ready for ballot by April 15 in order to be a candidate for the next release. If you are unsure what to do for a plan review, check out the JESP Guide.