Java2009-05-28
How to count the number of digits in any Input number other than negative numbers
This tutorial has code that explains How to count the number of digits in any Input number other than negative numbers using Java.
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Java2009-03-28
List all the serial and parallel ports in your system using Java
Are you getting javax.comm.NoSuchPortException error? If yes, then first check if ur COM port is really been detected by the driver. I'll give you one program that will display all
Read tutorialJava2008-11-24
Setting Up SSL on Tomcat
When transferring usernames and passwords over HTTP, you should set up SSL on Tomcat or whichever application server you are using. This protocol ensures that the names and passwor
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Creating Users and Passwords with Tomcat using tomcat-users.xml
A very easy method of authenticating users with Tomcat involves creating usernames, passwords, and roles in the tomcat-users.xml file. This file is stored in /conf.
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Configuring a DataSource in Tomcat
Tomcat makes it easy to set up a connection pool so that servlets and JSPs can efficiently share database connections. In web sites that have many simultaneous users, a connection
Read tutorialJava2008-09-02
Using Charts in JasperReports
JasperReports now has built-in support for charts. There is a new chart component ready to use like we already had images, text fields, subreports and other elements.
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Java2008-09-02
Report Sections in JasperReports
When building a report design we need to define the content and the layout of
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Using Variables in JasperReports
A Report variable is a special objects build on top of an expression. Variables can be used to simplify the report design by declaring only once an expression that is heavily used
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Using Expressions in JasperReports
Expressions are a powerful feature of JasperReports. They can be used for declaring report variables that perform various calculations, for data grouping on the report, to specify
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Fields in JasperReports
Report fields represent the only way to map data from the data source into the report generating routines. When the data source of the report is a ResultSet, all fields must map to
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Using Parameters in JasperReports
Parameters are object references that are passed-in to the report filling operations. They are very useful for passing to the report engine data that it can not normally find in it
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What is a report design in JasperReports?
As mentioned, a report design represents a template that will be used by the JasperReports engine to deliver dynamic content to the printer, to the screen or to the Web. Data store
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