java-11

I am trying to migrate my application from Java 8 to OpenJDK 11. I used MySql connector version 5 and its working fine. Is it required to upgrade MySql connector JAR to version 8.0? I read about it from below link but they don't mention about Java 11. https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-versions-java.html According to your reference, and this , we clearly can see that, MySQL connector version 5 uses JDBC version 3.0, 4.0, 4.1, 4.2 . MySQL connector version 8 uses JDB version 4.2 . Although JDBC version 4.2 supports JDK version 1.8.x, the new (for today) JDBC version 4.3

Java 11 had recently arrived and, as everybody knows, this version has no installation file. To install Java without installer I, of course, had set my system settings PATH and JAVA HOME to the address of the folder where my Java 11 was unzipped (advised by accepted reponses to similar questions). The only thing is that all those advices about system settings make no effect whatsoever on my machine: Checking with a command line outputs my old Java 9 version With Java 9 removed from the folder, command line does not recognise any Java at all. So, is there actually any way to install this

This question already has an answer here: How to avoid IntelliJ to reset language level? 1 answer when I use the word "var" the IDE recognize the command, but when I compile the code, it gives me an error: Error:(10, 17) java: cannot find symbol symbol: class var location: class Exp the code: public final class Exp { public static void main(final String[] args) { var x=5; } } So why does it happen? How can i solve it? the pics: Thanks to @Marv the solution was Settings -> Build, Execution, Deployment -> Compiler -> Java Compiler and raise the Project Bytecode version to 11. (I raised it from 8

I have created a run time image for my Java application using jlink and I would like to be able to ship my app as an executable to different platforms. Ideally, it would be a single file that a user can double click and start the application without the need for installing anything. Is there currently a good way to do this? You can make an installer that installs the JDK and the application. Make the application an exe by using something like Launch4j and for a Mac executable follow this tutorial by Oracle: Packaging a Java App for Distribution on a Mac and lastly: For Linux Minecraft uses

Currently I'm using tycho to build and package my eclipse RCP app with java 8 and eclipse 4.8, ( JMSToolBox ) For windows distributions, the tycho build process "copies" the JRE v8 (Oracle) into the distribution package in the "jre" directory via an ant task I'm in the process of upgrading to eclipse RCP 2018-09 and Java 11 (OpenJDK) 2 problems arise: OpenJDK 11 does not provide a JRE OOTB. As I do not want to bundle the 300MB of the full JDK in the distribution, is there a way to embed only the equivalent of the JRE for java 11. With tycho itself? by building a specific JRE by using some JDK

When I compile and run the following very simple Java program using OpenJDK 11 (Zulu distribution on Windows 10): public class GCTest { public static void main(String[] args) { System.out.println("Free memory before garbage collection: " + Runtime.getRuntime().freeMemory()); Runtime.getRuntime().gc(); System.out.println("Free memory after garbage collection: " + Runtime.getRuntime().freeMemory()); } } it looks like garbage collection is decreasing the amount of free memory: Free memory before garbage collection: 266881496 Free memory after garbage collection: 7772200 This does not happen when