How to write JavaScript function to check JRE version

Question

I am new to JavaScript. How to write JavaScript function which will return installed Java version in the computer.

Thanks
Sunil Kumar Sahoo

Answer 1

use the JNLP, the Sun Unified Deployment Mechanism, the getJREs() function is your answer:

<script src="http://www.java.com/js/deployJava.js"></script>
<script>
     var versions = deployJava.getJREs();
     alert(versions);
</script>

NB

it works in a consistent fashion across various browsers

Answer 2

var JavaVersion = PluginDetect.getVersion('Java', 'getJavaInfo.jar');
var Java0Status = PluginDetect.isMinVersion('Java', '0', 'getJavaInfo.jar');
alert('Java version is ' + JavaVersion + '\n' + 'Java status is ' + Java0Status);

This is the plugin detect generator page, also you can check here for detail about that.

Answer 3

You can use the deployJava.getJREs() method in the Deployment System (returns a list of currently installed JREs).