How to check null condition for the boolean variable

How to check null condition for the boolean variable

References

Reference NO 1

http://stackoverflow.com/questions/15200522/how-to-check-null-condition-for-the-boolean-variable

Reference NO 2

http://stackoverflow.com/questions/7938622/android-java-check-boolean-value-checking-for-null

Reference NO 3

http://php.net/manual/en/language.types.boolean.php

Reference NO 4

http://www.java2s.com/Code/Java/Data-Type/ChecksifaBooleanvalueisnotfalsehandlingnullbyreturningtrue.htm

Reference NO 5

http://www.functionx.com/java/Lesson06.htm

Reference NO 6

http://www.learnpython.org/Conditions

Reference NO 7

http://freemarker.org/docs/dgui_template_exp.html

Reference NO 8

http://www.roseindia.net/answers/viewqa/Java-Beginners/5365-How-to-do-Null-validation-for-a-boolean-variable.html