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How do you look up methods and parameters?

Books
4% (18 votes)
Javadocs
48% (242 votes)
IDE auto-completion
47% (238 votes)
Something else
1% (7 votes)
Total votes: 505

Comments

Usefulness of Sun's doc

I think they should ask how useful is it when you look up a method in Sun's JDK documentation. The answer: next to nothing.

What about source code?

Mostly i get the methods by auto completion, whenever that doesn't suffice, i look at the javadocs. When neither of them get me anywhere, i just go look in the source... :)

JDocs.com

For almost any open-source API (which is 80% of what I use today), JDocs.com has the Javadoc plus comments left by readers.