How to localize the text of a program based on a setting?

How to localize the text of a program based on a setting?

References

Reference NO 1

http://en.wikipedia.org/wiki/Internationalization_and_localization

Reference NO 2

http://docs.oracle.com/cd/E16582_01/doc.91/e23361/intro_spain.htm

Reference NO 3

http://msdn.microsoft.com/en-us/library/ms788718.aspx

Reference NO 4

http://stackoverflow.com/questions/888088/how-do-i-convert-a-string-to-double-in-java-using-a-specific-locale

Reference NO 5

http://developer.apple.com/library/ios/documentation/MacOSX/Conceptual/BPInternational/Articles/InternationalGuidelines.html

Reference NO 6

http://codex.wordpress.org/Translating_WordPress

Reference NO 7

http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V40F_HTML/COSEPRGD/DOCU_010.HTM

Reference NO 8

http://www.the-localization-tool.com/