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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.
Java - converting an integer to a fixed length string

There are some things in Java which you would think are no-brainers (one-liners) but turn out to be not quite so simple. This issue has improved over the years, with additions of methods like split to java.lang.String, but some gaps remain. And the solution - the joy of an OO langauge - is for you to write a solution that fits you (and your organisation) just one, and then have it as a one-liner as you wanted, but better than that have it tuned to your specific needs.

Converting an integer to a string, fixed width, space padded. Easy with a function call. Here's the call
  expandTo(builder[row][col],6)
and here's the function defintion:
  public static String expandTo(int val, int cols) {
    StringBuffer wip = new StringBuffer(Integer.toString(val));
    while (wip.length() < cols) wip.insert(0," ");
    return wip.toString();
    }


Reading a number from the user. Easy with a function call. Here's the call
  daily[so_far] = WellHouseInput.readNumber();
and you can find the function definition [here]
(written 2015-02-04)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J713 - Java - More Input and Output
  [1239] End of File on a Java BufferedReader - (2007-06-22)
  [2420] Exceptions in Java - why and how - (2009-09-24)
  [4350] Keyboard reader for Java programming newcomers - (2014-12-12)
  [4420] Flexibility in input - read from file, web resource or keyboard - (2015-02-08)

J707 - Java - Strings
  [1446] An answer to a student asking 'Help' - (2007-11-27)
  [1557] Trying out our Java examples on our web site - (2008-02-27)
  [2649] Length, size or capacity in Java? - (2010-02-24)
  [3048] String handling - from first steps to practical examples - (2010-11-13)
  [4393] Splitting Java strings and extracting numbers - (2015-01-13)


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Melksham Community Campus - which of these potential signs do you like?
Crisp morning, fast run
Challenging the IT course business model
Buffet review - taking the price into account
Java - converting an integer to a fixed length string
Binomial Coefficient (Pascal Triangle) objects in Java
Java -making sure you have the right versions
Location, location location. And a chance of a giggle!
A good example of recursion - a real use in Python
Setting up and using a dict in Python - simple first example
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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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