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Using the lead - passing arrays and other collections in Java

If you're taking the dog for a walk, it's much more lightweight to simply take the lead and have the dog follow than to actually carry the dog. And if you're passing a whole collection of data into a function, it's much more lightweight to pass in the address or reference to the collection than to copy the collection in. And if you do that, you can make alterations from within the function and have those alterations be reflected in the orignal calling code, which is both powerful (if you thing about what youre doing) and dangerous (if you don't).

Source code of an example in Java - [here].
(written 2015-02-16, updated 2015-02-17)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J705 - Java - Arrays
  [4413] Binomial Coefficient (Pascal Triangle) objects in Java - (2015-02-03)
  [4347] Arrays in Java - an introduction for newcomers - (2014-12-10)
  [3118] Arrays of arrays - or 2D arrays. How to program tables. - (2011-01-02)
  [3039] Fresh Paint - Java Arrays - (2010-11-09)
  [3038] Setting up individual variables, and arrays, in Java - some commented examples - (2010-11-09)
  [2648] Java arrays - are they true arrays or not? - (2010-02-23)
  [1614] When an array is not an array - (2008-04-17)
  [1498] Java is a dynamic language .... (and comparison) - (2008-01-08)
  [1497] Training Season Starts again! - (2008-01-07)


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