java – Page 4 – Kev's Development Toolbox

February 22, 2022February 22, 2022

Effective Java: recommended 18 years ago, still top of my recommended reading list today

In past years I used to put together a recommended reading list for software developers, particularly Java developers. I think I stopped doing it as often because year to year my list really didn’t change much, if at all.

As an example, 18 years ago, Effective Java by Josh Bloch I would say was required reading for all Java developers, new and experienced. It would still be at the top of my list today. It’s essential reading and solid guidance for all Java developers. If you’re a Java developer and you haven’t read this book yet, pick up a copy and read it now.

November 12, 2021November 11, 2021

Elapsed time between two java.time.LocalDateTime instances

java.time APIs provide many common date and time calculations. To calculate the elapsed time between two LocalDateTime instances you can use:

LocalDateTime start = LocalDateTime.now();
//some time inbetween
LocalDateTime end = LocalDateTime.now();

long elapsedMinutes = ChronoUnit.MINUTES.between(start, end);

November 1, 2021November 1, 2021

Installing Maven tool support in vanilla Eclipse IDE

If you download an Eclipse bundle like the Eclipse IDE for Java EE developers, you’ll get Maven support built in, but if you download a vanilla Eclipse install (like from using from of the daily builds), you’ll need to install many pllugins yourself.

Eclipse support for Maven is provided via the m2Eclipse plugin, there are installation instructions here:

I’ve had luck using these installer buttons before, but on this daily build for M1 they don’t seem to do anything. Instead I used the manual approach by adding a new ‘site’ in ‘Add New Software, ‘ adding https://download.eclipse.org/technology/m2e/releases/latest/ and then selecting ‘Maven Integration for Eclipse’ :

Done!

October 31, 2021January 30, 2022

Installing Eclipse IDE for Apple M1 Silicon

Update January 2022: Since writing this official release versions are now available with MacOS AArch64 builds for M1 Macs from the main downloads page: https://www.eclipse.org/downloads/packages/

From the official Eclipse downloads page as of 10/31/21 there aren’t any M1 builds ready for download. However, following the comments on this bug/feature request, there have been daily builds for M1 it looks like for some time. The daily builds are available here.

I downloaded the latest stable build from here:

Double-clicking the downloaded .dmg and then dragging the Eclipse app into Applications is all that was needed to install. Done!