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I have exist weblogic and JDK old versions on Windows platform. I want to update them. But when I search document about update steps on internet, I couldn't find anything. They just mention about installing process.(I know how to installing on systems but I don't want to delete and re-install).
So I really want to see step by step updates. Anyone can share doc or link about it?
7 STEPS as below to do upgrade weblogic 1036 from JDK6 to JDK7
Install JDK 7;
Stop all processes that use the your MW_HOME.
Edit $MW_HOME/wlserver_10.3/common/bin/commEnv.sh and change the JAVA_HOME location.
For every domain, change the domain "setDomainEnv.sh" script to accomodate for the net JAVA_HOME .
Change the JDK location specified in nodemanager.properties for the default and any other existing nodemanager process
Replace the new JDK location on all the minor tools used in the same MW_HOME, such as BSU, uninstaller, etc.
Restart the processes as normal, they should take the new JDK version.
Please refer to this for more details.
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Nashorn JavaScript engine removed from Java 16. I am running Java application (Minecraft server) which using plugin which using Nashorn Engine to run JavaScript snippets. I recently updated my server to Java 16 and now this plugin wont load.
Plugin (https://github.com/TabooLib/TabooLib) using for example import jdk.nashorn.api.scripting.NashornScriptEngineFactory;, etc...
Is there any replacement I can install to make this plugin work again? Or I need to ask developer to deal with it in repository?
I was reading about GraalVM, but I am not sure it will work as drag-drop replacement and also I do not work to switch from OpenJDK just yet...
There's a standalone Nashorn distribution now; version 15.2 allows you to run with JDK 11 and up. See answers https://stackoverflow.com/a/66190018/252858 and https://stackoverflow.com/a/65983899/252858 for more discussion about Nashorn on JDK 15 and up, and https://github.com/szegedi/nashorn/wiki/Using-Nashorn-with-different-Java-versions for information about what happens if you use 15.2 on JDK 11-14.
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When I try to download Java, I download JRK. I want to download JDK, but I do not know where to download from. Can anyone help?
I am running Windows 10.
if you are on debian/ubutu and want OpenJDK, then this command should suffice -
sudo apt install openjdk-15-jdk
for CentOS and RHEL based Linux -
sudo yum install openjdk-15-jdk
for Arch Linux -
sudo pacman -S openjdk-15-jdk
If you are on windows or mac, its better to go ahead download Oracle JDK after accepting their terms & conditions from they site -
Oracle JDK 15
EDIT:
I don't have enough points to comment. May this answer increase my reputation such that I can comment, from next time
You can download multiple versions of the JDK at: Java SE downloads (version 15, version 11, and version 8 are currently available).
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I'm trying to install Java FX again from download software section in eclipse. I did the procedure multiple times but this time I'm having troubles finding a Java FX version (eclipse can't even find it in any available site).
Online or from the official site there is no trace of it..
So... it is dead?
Are there any alternatives for Java? (No swing please, it's too old)
Since Java 11, OpenJFX is decoupled from the Oracle JDK (this was already the case for OpenJDK), and needs to be installed separately on the Java level. You should not install it in Eclipse, because Eclipse is an IDE, not your Java installation.
To be clear, Java FX is not dead, the decoupling just allows releases to be developed at a separate pace and your Java installation being more modular.
How you install this depends on your operating system.
For example on Arch Linux with the OpenJDK, you install java-openjfx from the extra repository.
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I am new to Java programming language. And would like to do a small app to learn on and get a head start into java.
I use an app called unlocker from emptyloop dot com. But its got adware, etc. So I just wanted to learn how to write my own app for myself to delete undeletable file or folder in windows.
Can anyone help me out, or know where I can find an example, I tried googling, but had no luck.
Well, I guess Java wouldn't be the right choice for that since it's a platform independent framework. And 'unlocking' files is very platform dependent in my opinion
But maybe you take a look at ForceDel. It's open source software and claims to do what you are looking for.
ForceDel uses some exciting new APIs introduced with Microsoft Windows Vista to determine which processes have a specified file in use. With this information, ForceDel is able to close the file in the remote process address space and then delete the file.
Starting with version 1.2, ForceDel can also delete files on Windows XP.
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From where can I download Sun JDK 1.4.2 for Windows. I have checked Sun's website and since they have stopped the support to this version it is no longer available for download.
Steps to find it:
Google "download jdk 1.4.2 for windows"
Visit one of the first hits: Oracle Java Archive.
Read the warning, twice, and follow the link to the Java SE 1.4 area.
There you can find several archived 1.4.2 downloads, the currently latest for Windows being 1.4.2_19.
At sun homepage.
http://java.sun.com/j2se/1.4.2/download.html
Here's the link to Sun's Archive which includes every point release for all JDK/JRE
http://java.sun.com/products/archive/