March 2002
Intermediate to advanced
496 pages
8h 51m
English
Content preview from Design Patterns Java™ WorkbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Summary
A major change that has accompanied the advent of object-oriented programming is that programming is now a matter of extending an existing code base. Talented Java developers spend more time reading than writing, to understand how their code will fit with and benefit from the voluminous class libraries. One class that you should be especially sure to understand is Object, the superclass from which all your classes will derive.
The subclasses you create should be logical and consistent extensions of their superclasses. The Java compiler will enforce some aspects of consistency; in many areas, however, consistency is a matter of judgment. The Liskov Substitution Principle suggests that subtypes should uphold the behavior of supertypes. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.