Java: Format Integer Into Fixed Width String
Sometime, you may want to format an integer or a long value into a fixed width String. You need to display the value in fixed width especially in reports where you want to keep the numbers in aligned (e.g. 3456 as 0003456 and 1234 as 0001234).
Other than that, you may also want to format the integer value for a better visibility. For example, to display integer value as a document number (e.g. 12345678 as 00-01234-5678), for example an account number.
The Java.format() is not flexible enough to solve my problem. At least it cannot be used to format a fixed length document number in the format I want: XX-XXXX-XXXX. Therefore I decide write my own format function.
Java: Format Long Integer Into Hexadecimal String
In software programming, sometime you may want to convert a long integer or integer into hexadecimal string for viewing purpose or also as a text format to be stored in text file or database.
The Java API itself does not have a class or function to convert a long into a fixed 16 characters hexadecimal string or an integer into fixed 8 characters hexadecimal string.
The Java's Long.toHexString(long i) or Integer.toHexString(int i) only able to convert the integer value to a string of ASCII digits in hexadecimal (base 16) with no extra leading 0s and it does not support the reverse way (from hexadecimal string to long integer value).
Java: Format integer into number of decimal places and performance
For certain reasons (e.g. precision issue), some programmer may store a float value (e.g. money) in integer variable. For example -12345678.90 is stored as -1234567890. To convert the integer value to number with number of decimal places is a problem.
There are several way to do it. You can simply use the Java's String.format(), DecimalFormat or Float.toString(). Most of them does not meet my requirements: Simple, fast, precise and with thousand separator. Therefore I wrote a simple class that ease myself.
Subscribe and Follow
Sponsored Links
Blog Network
- All Gadget Latest Gadget Reviews and News
- Blog Portal A place where bloggers gather
- Personal Fincance Personal Finance – Personal Money Tips, Stock Investment, Small Business and Make Money Online
- szehau's weblog Life, Internet, Software, Gadgets, Programming and Investments
- Vista Talks Windows News, Windows Updates, Tips And Tricks For Windows and Windows Software
Recent Posts
- Java: Use ByteBuffer As InputStream
- 100th Posts For Snippet IT
- Java: Format Integer Into Fixed Width String
- Happy Holidays from your Google team!
- Google Wave Invitation Giveaway
Recent Comments
- max on Google Chrome: How to Stop Youtube Loading Data from the Internet
- szehau on Google Wave Invitation Giveaway
- szehau on Google Wave Invitation Giveaway
- szehau on Google Wave Invitation Giveaway
- Poraro on Google Wave Invitation Giveaway
Categories
- Earning with Website and Blogging
- New and Happening
- Programming and Scripting
- Search Engine Optimization and Internet Marketing
- Software and Hardware
- Tips and Tricks
Tags
Archives
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- October 2008
- August 2008
- April 2008
Blog Network
- All Gadget Latest Gadget Reviews and News
- Blog Portal A place where bloggers gather
- Personal Fincance Personal Finance – Personal Money Tips, Stock Investment, Small Business and Make Money Online
- szehau's weblog Life, Internet, Software, Gadgets, Programming and Investments
- Vista Talks Windows News, Windows Updates, Tips And Tricks For Windows and Windows Software
