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Category: Misconceptions

Common misconceptions on programming and computer science in general.
I try answerings questions in a facebook group and often stumble over the same misconceptions. These are merely my thoughts on the topic and not a substitution for a proper text book. A good book can sometimes leave out certain details but it would not lead you to a complete misunderstanding of the topic.

Regular Expressions

I often notice that many students of programming do not understand the actual meaning of regular expressions. And I have seen online tutorials and even books that do not explain properly what regular expressions are.  Continue reading “Regular Expressions”

Author ClaudePosted on 2014-11-252019-11-26Categories Misconceptions, ProgrammingTags regex, regexp, Regular Expressions4 Comments on Regular Expressions

Misnomer: String.length()

The method String.length() gives the length of the String, right? Or does it?

Continue reading “Misnomer: String.length()”
Author ClaudePosted on 2014-08-172018-12-18Categories Java, Java Misnomers, Misconceptions, ProgrammingTags characters, normalization, String, unicode2 Comments on Misnomer: String.length()

Is a Constructor a Method?

Why a constructor is not a method.

No, it’s not. In reflection both extend Executable, but Constructor does not extend Method. It is a common misconception that constructors are methods and often asked about at job interviews.

Continue reading “Is a Constructor a Method?”
Author ClaudePosted on 2014-08-022020-04-25Categories Java, Java Interview Questions, Misconceptions, ProgrammingTags constructor, method, new operator2 Comments on Is a Constructor a Method?

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