Hi guys,
Thanks for everything that you are doing.
I’ve just tried to update my local server from 0.35.3-java8 to 0.36.0 and there isn’t a Java8 version (probably as a result of moving to Java 10).
I’m running the local server on my Rpi 2 which has Java 8 installed. Does anyone know how to install a newer version of Java on this pi?
Thanks
Yes sir, we do!
https://www.bell-sw.com/java-for-raspberry-pi.html
I just tried and it appears to be working fine. I installed the JRE DEB version.
@Lichtsignaal emailing also works for you? As @Gunner has problem with it.
I hope we will provide critical releases with java8 too.
As it comes to me: I’m on HOLD for now. No 64bit java 10 is available for ARM’s yet. Yes, I could move it to other “machine” but I just don’t want to mess it all I currently have.
@marvin7, that makes two of us.
I’ve just ordered a Pi 3B+ for Blynk so hopefully we’ll have a 64 bit version soon.
Yeah… I wonder how quick is this “soon available”… And how good it will be. I do remember, my entry trials with Blynk server were with OpenJDK v8. It wasn’t a pleasant “cooperation” - quite a lot of Java errors in log and somehow slooow - compared to Oracle JDK. So we will see.
So far, aside from email 
, the 32bit version (from Java10 link above) is working quite well on my RPi3… which is also running a Blynk client in NodeJS. With VNC login I am getting 2-13% CPU usage
And what shows htop as memory usage? In my case it is 10,9% (108M) out of 1G after few days (initially about 9%). It doesn’t mean much but I’m curious. The CPU % is influenced by SOO MANY factors (even SD card speed) that it is hard to compare, but anyway: I have 2,5~5%, but the CPU is different too (H5@1368MHz) hence the 64bit is required…
So far whatever all this says 
One picture is more than dozens words… OK, thanks. Pretty much the same (109 vs 108M)
@marvin7 Are you able to confirm if you have any issues emailing AUTHs when using this alternative Java10 method?
@Lichtsignaal How about in your case… any email issues? I used the JDK which I think is the fuller version, so wondering if the JRE might work better.
unfortunately NO! But that’s because I can’t run it (no 64bit ARM binaries). They (at Bellsoft) are stating that it will be “soon” available, but “soon” sometimes turns out to be"never", so I’m stuck at JAVA 8 as stated few posts earlier.
If JRE is available, I’d go for it… You don’t need the JDK to run Blynk AFAIK.
I have been trying… I just can’t figure out how to uninstall the JDK 
apt-get remove package-name [purge] doesn’t work?
or apt remove package-name
Check what’s installed:
# apt list --installed | grep jdk
# apt list --installed | grep java
Based on the results, remove them 
# apt-get remove --purge openjdk-8 (perhaps you could use wildcards like openjdk*.
When he says he cant figure it out it means that he doesn’t know the command 
Partially true I think I am using the correct commands… but while it “sees it” for version check, it will not remove it?
gunner@RPi3:/ $ java --version
openjdk 10.0.1-BellSoft 2018-04-17
OpenJDK Runtime Environment (build 10.0.1-BellSoft+0)
OpenJDK Server VM (build 10.0.1-BellSoft+0, mixed mode)
gunner@RPi3:/ $ sudo apt-get --purge remove openjdk
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package openjdk
gunner@RPi3:/ $ sudo apt-get --purge remove openjdk 10.0.1-BellSoft 2018-04-17
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package openjdk
E: Unable to locate package 10.0.1-BellSoft
E: Couldn't find any package by glob '10.0.1-BellSoft'
E: Couldn't find any package by regex '10.0.1-BellSoft'
E: Unable to locate package 2018-04-17
gunner@RPi3:/ $ sudo apt-get --purge remove openjdk*
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'openjdk-9-jre-headless' for glob 'openjdk*'
Note, selecting 'openjdk-8-jdk' for glob 'openjdk*'
Note, selecting 'openjdk-8-jre' for glob 'openjdk*'
Note, selecting 'openjdk-6-jdk' for glob 'openjdk*'
Note, selecting 'openjdk-6-jre' for glob 'openjdk*'
Note, selecting 'openjdk-9-demo' for glob 'openjdk*'
Note, selecting 'openjdk-6-jre-headless' for glob 'openjdk*'
Note, selecting 'openjdk-8-demo' for glob 'openjdk*'
Note, selecting 'openjdk-8-jdk-headless' for glob 'openjdk*'
Note, selecting 'openjdk-9-dbg' for glob 'openjdk*'
Note, selecting 'openjdk-7-jre-headless' for glob 'openjdk*'
Note, selecting 'openjdk-9-doc' for glob 'openjdk*'
Note, selecting 'openjdk-8-jre-zero' for glob 'openjdk*'
Note, selecting 'openjdk-8-source' for glob 'openjdk*'
Note, selecting 'openjdk-jre' for glob 'openjdk*'
Note, selecting 'openjdk-9-jdk' for glob 'openjdk*'
Note, selecting 'openjdk-9-jre' for glob 'openjdk*'
Note, selecting 'openjdk-7-jdk' for glob 'openjdk*'
Note, selecting 'openjdk-7-jre' for glob 'openjdk*'
Note, selecting 'openjdk-9-jdk-headless' for glob 'openjdk*'
Note, selecting 'openjdk-8-jre-headless' for glob 'openjdk*'
Note, selecting 'openjdk-9-source' for glob 'openjdk*'
Note, selecting 'openjdk-8-dbg' for glob 'openjdk*'
Note, selecting 'openjdk-8-doc' for glob 'openjdk*'
Package 'openjdk-7-jre' is not installed, so not removed
Package 'openjdk-6-jre' is not installed, so not removed
Package 'openjdk-7-jre-headless' is not installed, so not removed
Package 'openjdk-6-jre-headless' is not installed, so not removed
Package 'openjdk-7-jdk' is not installed, so not removed
Package 'openjdk-jre' is not installed, so not removed
Package 'openjdk-6-jdk' is not installed, so not removed
Package 'openjdk-8-dbg' is not installed, so not removed
Package 'openjdk-8-demo' is not installed, so not removed
Package 'openjdk-8-doc' is not installed, so not removed
Package 'openjdk-8-jdk' is not installed, so not removed
Package 'openjdk-8-jdk-headless' is not installed, so not removed
Package 'openjdk-8-jre' is not installed, so not removed
Package 'openjdk-8-jre-headless' is not installed, so not removed
Package 'openjdk-8-jre-zero' is not installed, so not removed
Package 'openjdk-8-source' is not installed, so not removed
Package 'openjdk-9-dbg' is not installed, so not removed
Package 'openjdk-9-demo' is not installed, so not removed
Package 'openjdk-9-doc' is not installed, so not removed
Package 'openjdk-9-jdk' is not installed, so not removed
Package 'openjdk-9-jdk-headless' is not installed, so not removed
Package 'openjdk-9-jre' is not installed, so not removed
Package 'openjdk-9-jre-headless' is not installed, so not removed
Package 'openjdk-9-source' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
gunner@RPi3:/ $
Correct commands, wrong in the package name I think. Use # apt list --installed | grep jdk to get the correct name, like:
root@ubuntu:~# apt list --installed | grep jre
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
default-jre/xenial,now 2:1.8-56ubuntu2 amd64 [installed]
default-jre-headless/xenial,now 2:1.8-56ubuntu2 amd64 [installed,automatic]
openjdk-8-jre-headless/xenial-updates,xenial-security,now 8u162-b12-0ubuntu0.16.04.2 amd64 [installed,automatic]
root@ubuntu:~#
EDIT: In my example it would be default-jre , default-jre-headless and openjdk-8-jre-headless.