What are good methods for save Java application data? [closed]

What are good methods for save Java application data? [closed]

References

Reference NO 1

http://stackoverflow.com/questions/13647657/what-are-good-methods-for-save-java-application-data

Reference NO 2

http://stackoverflow.com/questions/8407721/basic-java-application-data-storage

Reference NO 3

http://beginwithjava.blogspot.com/2011/04/java-file-save-and-file-load-objects.html

Reference NO 4

http://alvinalexander.com/java/java-file-save-write-text-binary-data

Reference NO 5

http://math.hws.edu/eck/cs124/javanotes3/c10/s2.html

Reference NO 6

http://developer.android.com/guide/topics/data/data-storage.html

Reference NO 7

https://developers.google.com/appengine/docs/java/datastore/jdo/creatinggettinganddeletingdata

Reference NO 8

http://javarevisited.blogspot.com/2011/12/read-and-write-text-file-java.html