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General Java Questions III specific to traversing a Hashtable). If this doesn't help, maybe you could clear up what you mean by Enumeration having defined methods. -- Eric Q: can anyone provide an example on how to use clone() and clonable interface? Answer: //Class Point uses default clone implementation that returns //shallow copy of Point (which is sufficient in this case). class Point implements Cloneable { int x, y; } class ImmutableRectangle { private Point lowerLeft = new Point(); private Point upperRight = new Point(); public Point getLowerLeftPoint() { try { return lowerLeft.clone(); } catch(CloneNotSupportedException e) { //shouldn't occur since Point is cloneable throw new InternalError(); } } } we don't want Rectangle points to be changed outside its class. the best way would be to create a copy of Point object and pass it. i5mast MVP for Java 2 http://www.brainbench.com Pick your topics, and we'll send you great deals, free information, and special offers by email from Focalex. IT Professional General Computer Design and Graphics Linux Freeware/Shareware Games Intranet Computer Hardware Web Design Computer Software UNIX Web Software Windows Software Personal Finance Programming Software Servers C/C++ Powerbuilder Perl XML Java SQL Design/Graphics Utilities Handhelds Get FREE STUFF, special offers and information on the Java, C/C++, SQL, XML and another languages programming topics YOU want to hear about delivered to your inbox! Unix, Windows Software/HardWare, Handhelds - just pick YOUR interests and start getting the stuff you want today. The best free info and deals on computers, software and much more by email. SUBSCRIBE for FREE HERE file:///F|/350_t/350_tips/general_java-III.htm (8 of 9) [2002-02-27 21:18:30]
General Java Questions III (c)1999, 2000, 2001 JavaFAQ.nu. All rights reserved worldwide. This document is free for distribution, you can send it to everybody who is interested in Java. This document can not be changed, either in whole or in part without the express written permission of the publisher. All questions please mailto:info@javafaq.nu file:///F|/350_t/350_tips/general_java-III.htm (9 of 9) [2002-02-27 21:18:30]
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