Showing posts with label simple java examples. Show all posts
Showing posts with label simple java examples. Show all posts

Friday, February 3, 2012

How To: write string in to file in one line of code

There is many examples how to do it, I propose you to add one tiny method to your code and forget.

How To: wrapp StringBuffer.append to print each "append" in new line

All of you know fine StringBuilder (StringBuffer) classes. Time to time you need to out multilines text and must code something like

Thursday, February 2, 2012

How To: simple Log in Java

If you need log in your application, you could find a lot of implementation in the internet. The best one is Apache log4j

But in the case of simple application I prefer to use a tiny Log class:

How To: clean directory in Java

There are tons of file utils on the web. The best one is File Utilities in Apache commons IO.

Any way, if you need just deleting directory with sub-directories or just clean directory form all files and sub-directories, then look at my tiny example

How To: run Domino agent outside from Lotus Notes client

This is simple with the help of Java API

How To: parse DXL in Java

How to export database in to DXL I described in How To: export DXL in Java

To do something with resulting DXL we need to find a way to easy get anything we want from the DXL. I will show how to do it with DOM parser. This is easy as always.

Wednesday, February 1, 2012

How To: read image from URL in Java

It's fairly easy.
Next example shows how to read an image and show it in a little java window, as well as read as image and store it in to the file

How To: read HTML source from URL in Java

HTML source could be read easily like
HtmlRemoteSource class

How To: detect operation system in Java

There is well known way to detect operation system
Work with strict type is much better in my opinion. Something like this:
It will allow to do strict switch:
The class itself

Tuesday, January 31, 2012

How To: export DXL in Java

We will do few simple steps to allow DXL exporting like this
Let's create simple class for description of database location. We will use it as light database representation
Exporter class itself
Class for run a simple example
Do not forget
You need add to the java class path also few libraries to allow DCL exporter to work:
Good old
Lotus\Notes\jvm\lib\ext\Notes.jar
And
Lotus\Notes\jvm\lib\tools.jar
Lotus\Notes\jvm\lib\ext\websvc.jar

How To: file separator in Java

I am always use
There is one more elegant way to get the same result
I did performance test of both on my PC and it's have the same speed. So you could use what you like

Monday, January 30, 2012

How To: remove an item on the document

How To: compare two documents

Java Code for compearing two documents item by item.
It prints only item's that is different by Name, Type, IsSummary, Values.

How To: print all items of document

Java Code for printing all items and it's values from some document: