Hanno Embregts

Java Developer & Speaker, strong with the Force - full bio

Posts labeled 'certification'

Eleven crazy learnings from the Java 11 certification: wrapper objects - passing arguments to method references (11/11)

Posted on 06 Sep 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. The final ‘crazy learning’ I’ll be blogging about has to do with method references.

Eleven crazy learnings from the Java 11 certification: wrapper objects - functional interfaces actually CAN contain multiple abstract methods (10/11)

Posted on 30 Aug 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We’re diving into functional interfaces today.

Eleven crazy learnings from the Java 11 certification: wrapper objects - some are more equal than others (9/11)

Posted on 23 Aug 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. Today is about equality when you’re dealing with wrapper objects.

Eleven crazy learnings from the Java 11 certification: equality in cloned arrays (8/11)

Posted on 16 Aug 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We’ll dive into array equality today.

Eleven crazy learnings from the Java 11 certification: the crazy stuff that is allowed in switch statements (7/11)

Posted on 09 Aug 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. Today we’ll look at the crazy stuff that is allowed in switch statements.

Eleven crazy learnings from the Java 11 certification: method overloading priorities (6/11)

Posted on 02 Aug 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week’s blog is about about method overloading priorities.

Eleven crazy learnings from the Java 11 certification: division by zero (5/11)

Posted on 26 Jul 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we’ll get mathematical as we focus on dividing by zero in Java.

Eleven crazy learnings from the Java 11 certification: anonymous subclasses in enums (4/11)

Posted on 19 Jul 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we’ll focus on anonymous subclasses in enums.

Eleven crazy learnings from the Java 11 certification: accessing static interface methods (3/11)

Posted on 12 Jul 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week is about accessing static interface methods.

Eleven crazy learnings from the Java 11 certification: stream elements should implement Comparable (2/11)

Posted on 05 Jul 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. This week we dive into stream elements.

Eleven crazy learnings from the Java 11 certification: a few freaky array declarations (1/11)

Posted on 28 Jun 2022 by Hanno Embregts java certification

In the summer of 2021, I got my Java 11 certification. I expected it to be quite a breeze, because I’d been a Java developer for 14 years and surely I should have seen it all by now, right? Turned out I was very wrong. I came across lots of things that I didn’t even know were possible with Java. In this weekly blog series I will go through 11 of these ‘crazy learnings’ that surprised me the most, even as an experienced developer. We start off with a few freaky array declarations.