No direct iteration over Maps -- Get Set of keys or key-value pairs from Mapt
Tutorial Details:
Maps do not provide an iterator() method as do Lists and Sets. A Set of either keys (keySet()) or key-value Map.Entry elements (entrySet()) can be obtained from the Map, and one can iterate over that.
Order of map elements in iteration
The order of the elements obtained from a Map depends on the type of Map they came from.
Good article on how to adopt XP
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xtreme programming (XP) is a software development methodology that makes coding the primary activity. By promoting values such as simplicity and feedback, XP allows Java programmers to incrementally develop and test applic
JAVASERVER PAGESTM JAVASERVER PAGESTM
JSPTM tag libraries define declarative, modular functionality that can be reused by any JSP page. Tag libraries reduce the necessity to embed large amounts of Java code in JSP pages by moving the functionality provided by the tags into tag implementation
Practically Groovy: JDBC programming with Groovy
Take your practical knowledge of Groovy one step further this month, as Andrew Glover shows you how to use GroovySql to build a simple data-reporting application. GroovySql combines closures and iterators to ease Java Database Connectivity (JDBC) programm
Programming Java threads in the
real world, Part
5 - JavaWorld -
February 1999