Eclipse and Java- need to install the legacy SE 6 runtime - java

I'm trying to get Eclipse to run. Here's the info on my java version-
And when I try to run Eclipse, this is what I get-
Does this mean I have to uninstall my current version of Java and download the legacy SE 6? I'd rather not do that, is there a simpler way to resolve this?
Thanks!

Your eclipse version seems very old to require Java 6.
The latest version currently available is Oxygen.
You can download from their official website. Downloading legacy java 6 is not a recommended idea.

Related

java 8 support for Eclipse Indigo [duplicate]

I just read How to have Eclipse use JDK8 to compile a project?
What i added jdk8 to eclipse as,
From the answers of How to have Eclipse use JDK8 to compile a project?
I tried to Update the JDT/Core, JDT/UI bundles from http://dist.springsource.com/snapshot/TOOLS/java8/e43
But it shows error as,
"Eclipse Java Development Tools Patch for Java 8 Support (BETA)" is not applicable to the current configuration and will not be installed.
"Eclipse Plug-in Development Environment Patch for Java 8 Support (BETA)" is not applicable to the current configuration and will not be installed.
How Can i fix it ?
I can say that Java 1.8 does in fact work with Eclipse Luna ( the beta version released around March 17, 2014) or later. I tried it and it was good.
Also, I noticed that in the Eclipse Marketplace, there are now plugins to install functionality into Kepler to support JDK1.8. I haven't tried the plugin myself though.
This is a old topic but I just wanted to point out that I have searched enough to find that Indigo version can't be updated to S.E 1.8 here the link which is given on eclipse website to update the Execution Environment but if you try it will throw error for Indigo.
Here is the link where the Information about execution environment is given.
This shows the step by step to update Execution environment.
I have tried to update Execution environment and I got the same error.

Java Card 3 Platform development kit is installed failed

I am new to Java Card development. During in the installation of development kit, I have some troubles and have no idea.
First of all, I downloaded the Java Card Platform from Oracle and install it step by step according to: https://docs.oracle.com/javacard/3.0.5/guide/eclipse_java_card_plug-in.htm#JCUGC126
But during installation the following error appeared:
I checked that the path of JC_classic_HOME is okay. Maybe the problem is caused by the incompatibility of the Java Card Platform and JCOP. So, I unload the JCOP and install it again, but the error also exist.
Just as the guide said: https://docs.oracle.com/javacard/3.0.5/guide/install_and_setup_the_development_kit.htm#JCUGC118
java version "1.8.0_111"
gcc version 5.3.0
eclipse IDE version 3.5.1
Apache version 1.9.7.
I know eclipse IDE is optional. My classmate used Visual Studio 2010、 gradle and JCDK3.0.3 build the project. But my object need eclipse IDE.
I have no idea, and I want someone give me some advice. Thank you!
What version of JDK and Eclipse are you using?
According to the user guide, JDK 7(8) and Eclipse Luna are recommended
I'm using the recommended version of JDK and Eclipse, didn't encounter the error above. Perhaps, you could take a try!

Can a jar which is compiled on old java version be used in new applications?

We are planning to upgrade our J2EE application, I worked with a lot of jars before and I know that the version mismatch can be a hard problem to debug. We have all the jars(internal to company and built by some other team so cannot recompile with latest version ) compiled using 1.6 jdk and we are bumping up our application version to 1.7, but we are planning to use 1.6 version jars in our app. Does this work well? If not what should I do to make it compatible?
I'm sure that it will work well but, need some expert opinion on this.
Thank yo
As you can see on Oracle's homepage regarding compatibility of Java 1.7 it should be compatibale except for the following things
Binary Compatibility
Java SE 7 is binary-compatible with Java SE 6 except for the
incompatibilities listed below. Except for the noted incompatibilities,
class files built with the Java SE 6 compiler will run correctly in Java SE 7.
Quote from oracle

Upgrade Eclipse from Java Dev to Java EE dev

I have Eclipse for Java Developers installed, and I installed the Java EE JDK to start working on Java EE.
How can I upgrade my Eclipse For Java Developers to Eclipse For Java EE Developers?
There might be some way using the update stuff, but I would just download the right version of Eclipse for what you want and start with that. It's easy and fast.

Which java development tool to download for windows7 x64?

I want to use eclipse for a java coding and compiling for my home use. So, which version should i download as i don't have any of the previous versions or plugin installed on my system (i.e. Win 7 ultimate, x64)?
The short answer
Get Eclipse IDE for Java EE Developers for Windows x64.
The long answer
You may download Eclipse from the http://eclipse.org website.
The last stable version of Eclipse is 3.7.1, codename Indigo. The next should be relased in June 2012.
You may compare what is inside the various offered package in the following page:
http://www.eclipse.org/downloads/compare.php
There are two main packages for Java, if you need it just to learn the language (or if you know you don't need Java EE), the smaller could do, but if you wish to do Java EE development, you need to larger.
Eclipse IDE for Java Developers for Windows x64
Eclipse IDE for Java EE Developers for Windows x64
I use Eclipse 64x and Java 64x.
-> http://www.oracle.com/technetwork/java/javase/downloads/index.html
-> http://www.eclipse.org/downloads/
In this web http://www.eclipse.org/downloads/, choose "Eclipse IDE for Java Developers" or "Eclipse IDE for Java EE Developers".
Regards!.

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