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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Which Version of Java am I running?

Write a test program to use the getProperty method on System:

public class Sample {
  public static void main (String [] args) {
  System.out.println("*** Hello Melksham ***");
  System.out.println(System.getProperty("java.vm.vendor").toString());
  System.out.println(System.getProperty("java.version").toString());
  }
}


Compile it

[trainee@easterton a9tom]$ javac Sample.java

and run it!

[trainee@easterton a9tom]$ java Sample
*** Hello Melksham ***
Sun Microsystems Inc.
1.6.0_10-beta
[trainee@easterton a9tom]$


It is VITAL (did I shout vital loudly enough for you?) to have the correct version of Java in use when you run your Tomcat!. Today's course ... I am using Sun's Java 6 (a.k.a. 1.6) which will work with Apache Tomcat up to version 6. Don't assume that Tomcat and Java version numbers always match up nicely in this way - they don't
(written 2009-04-02)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J708 - Java - Packages
  [754] tar, jar, war, ear, sar files - (2006-06-10)
  [2419] Where is my Java class? - (2009-09-24)
  [2865] Relationships between Java classes - inheritance, packaging and others - (2010-07-10)

J050 - Java - General
  [2087] Comparing Java Courses - what can we do? - (2009-03-17)
  [2091] C, C++ and C# ... Java and JavaScript - (2009-03-20)
  [2417] Java Programming Fundamentals - (2009-09-24)
  [2420] Exceptions in Java - why and how - (2009-09-24)
  [2504] Learning to program in ... - (2009-11-15)
  [2861] MySQL and Java - connectivity past, present, and future thoughts - (2010-07-09)
  [3573] New in Java 7 - and why we are not running public Java 7 courses - (2012-01-08)
  [4305] Learning to program in Java - yes, we can help. - (2014-09-26)
  [4317] Java - an update of the basics - (2014-11-16)
  [4412] Java -making sure you have the right versions - (2015-02-02)
  [4430] The spirit of Java - delegating to classes - (2015-02-18)


Back to
Answering a question with a question
Previous and next
or
Horse's mouth home
Forward to
Finding your java program - the CLASSPATH variable
Some other Articles
Spring Sprung
Choosing a railway station fairly in PHP
Why do we delay new forum members through authorisation?
Finding your java program - the CLASSPATH variable
Which Version of Java am I running?
Answering a question with a question
Whatever next ... the joys of being an employer
Business Networking for Melksham - 23rd April
MySQL - looking for records in one table that do NOT correspond to records in another table
Why most training fails ...
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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