December 2012 26
Java Regular Expression : Matcher & Pattern
Java provides java.util.regex package for regular expression evaluation. It has one interface MatchResault and two derived classes Matcher and Pattern. Testing Matcher and Pattern:- The following demo code shows use of Matcher and Pattern class use.It also shows the ISBN code validation. A ISBN book code is 13 digit number. RegularExpressionDemo.java, package com.sandeep.regular.exp;import […]
Capacity & Load Factor : HashMap
The HashMap data structure provides four different constructor template to create HashMap Object. HashMap() , HashMap(Map map) , HashMap(int capacity), HashMap(int capacity,float loadfactor). Threshold point is a measured unit for an Object’s normal ability, beyond that point the Object does not behave as regular.In the context of HashMap the […]
PostGre Admin 3 : Managing Database
PostgreSQL database is a open source object relational database. Benefits like savings in staffing cost as SQL is known, reliability, stability, cross platform nature,GUI based database management made it popular. Download Link: http://www.postgresql.org/download/windows/ After Installation in programs “PgAdmin III” is available.This is the GUI based management for PostgreSQL. PostGreSQL Admin 3:- The admin […]
QDox Model : Java Source parsing
QDox is a library from thoughtwork for java source parsing. Qdox provides a class called JavaBuilder to create java document. QDox library download link :- http://qdox.codehaus.org/download.html Project Structure:- A Sample Java File DemoJava.java , package com.sandeep.qdox.demo;import java.util.ArrayList;import java.util.List;public class DemoJava { public void printName() { System.out.println("Hi print name method"); } […]