Examples of Design Patterns used in JDK

Question

Possible Duplicate:
Examples of GoF Design Patterns

At an interview a while back I was asked for some examples of Design Patterns within the JDK.

Off the top of my head I was able to identify

Flyweight - as used in the String pool Singleton - in java.lang.Runtime Iterator - as used on Collections classes

Not that many.

What are the other good examples of Design Patterns as used in the JDK?

Duplicate? http://stackoverflow.com/questions/1673841/examples-of-gof-design-patterns — Wildcat, Sep 06 '10 at 07:41
Factory Factory Factory - http://discuss.joelonsoftware.com/default.asp?joel.3.219431 — Jon Freedman, Sep 06 '10 at 07:42
Already asked with 500+ votes up. http://stackoverflow.com/questions/1673841/examples-of-gof-design-patterns — Adnan, Jan 27 '14 at 11:46

score 10 · Accepted Answer · edited May 23 '17 at 11:54

10

Observer interfaces, you have them out-of-the-box.

edited May 23 '17 at 11:54

Community

answered Sep 06 '10 at 07:42

pakore

score 5 · Answer 2 · edited Apr 16 '13 at 18:55

5

Ouch, that's a tough question. Patterns are used almost everywhere in java. You can find some patterns used in Java EE on the Java BluePrints page.

Resources :

edited Apr 16 '13 at 18:55

Arjan Tijms

answered Sep 06 '10 at 07:55

Colin Hebert

score 3 · Answer 3 · answered Sep 06 '10 at 07:45

3

You can try a straightforward approach: goto the JDK Javadoc and search for (Ctrl + F) the names of some design patterns. For example,

answered Sep 06 '10 at 07:45

Nate W.

3 Answers3