Home Accessibility Courses Twitter The Mouth Facebook Resources Site Map About Us Contact
 
Python and Tcl - public course schedule [here]
Private courses on your site - see [here]
Please ask about maintenance training for Perl, PHP, Lua, etc
 
First Java Application - calculating the weight of a tablecloth

From last week's Java course - the first practical demonstration program I wrote:
• prompts for user input
• reads that input
• calculates
• outputs results

That's the stage I look to get to quickly on a course to give my delegates some idea early on of how the language goes together - source code in this case is [here].

In Java, reading from the keyboard is reading from a stream for which you have to use an appropriate class. You must catch exceptions which can be of various types, all of which are direct or indirect subclasses of a base class object. If this is starting to feel complex, fear not. "If you want to do something that's commonly done, chances are people have done it before and made it available" ... and indeed I have provided a class (well reader) which hides all this complexity from the newcomer and lets you read numbers easily.

The actual application reads the width and length of a table, and calculates the weight of a table cloth to fit that table, with appropriate overhang. Should you ask "who weighs their table cloths" I will answer "we do" - weighing linen is a very useful way for a commercial cafe or hotel to tell similar but not the same pieces apart once they've been washed and ironed, and our scales are a vital piece of laundry equipment!
(written 2014-11-29)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J601 - Java Introduction
  [2536] All the Cs ... and Java too - (2009-12-13)
  [2423] What is a JVM, a JRE, a JDK - components of the core Java Environment - (2009-09-26)
  [2115] Finding your java program - the CLASSPATH variable - (2009-04-02)
  [1908] Java CLASSPATH explained - (2008-11-26)
  [1766] Diagrams to show you how - Tomcat, Java, PHP - (2008-08-22)
  [1557] Trying out our Java examples on our web site - (2008-02-27)
  [1497] Training Season Starts again! - (2008-01-07)
  [1466] Effective Java training - the bootcamp approach - (2007-12-09)
  [1418] A Golf Club Decision - Perl to Java - (2007-11-01)
  [1158] Private Java Course - A customer's pictures - (2007-04-22)
  [1049] Java 6, Apache Tomcat 6. - (2007-01-21)
  [871] Java oversold? - (2006-09-19)
  [792] Is Java the right language to learn? - (2006-07-04)
  [317] Programming languages - a comparison - (2005-05-20)
  [124] PHP v Java - (2004-11-20)
  [111] Training notes available under Open Distribution license - (2004-11-07)
  [25] Release numbers - (2004-08-23)


Back to
Musings on a Welsh town
Previous and next
or
Horse's mouth home
Forward to
Misty Melksham Morning
Some other Articles
Test Driven Development - a first example of principle in C
Flexible public courses - residential or commuting, programming newcomer or experienced, C or C++
Splitting out code into name blocks for clarity and reusability
Misty Melksham Morning
First Java Application - calculating the weight of a tablecloth
Musings on a Welsh town
Java - factory method, encapsulation, hashmap example
Does Santa Claus need a CRB check?
Folk music train, Westbury to Swindon round trip, 14th December 2014
Good, stable, reliable local businesses
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per page


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.

Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2019: 404 The Spa • Melksham, Wiltshire • United Kingdom • SN12 6QL
PH: 01225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho

PAGE: http://www.wellho.net/mouth/4332_Fir ... cloth.html • PAGE BUILT: Sat May 27 16:49:10 2017 • BUILD SYSTEM: WomanWithCat