Adding comments in a properties file line by line

Question

This is something which I want to do in properties file

#Comments about key Value pair 1
Key_1=value_1


#Comments about key Value pair 2
Key_2=value_2

#Comments about key Value pair 3
Key_3=value_3

Right now what I am able to do with my file is

#OMG, It works!
#Mon Oct 14 01:22:10 IST 2013
Key_1=Value_1
Key_2=Value_2

Is there any way of doing such a thing

Answer 1

You can use the Apache Commons Configuration to write and read Properties files, specifically the setComment() function in a PropertiesConfigurationLayout which allows you to specify a comment for each property.

Note that above links refer to Commons Configuration v1.x, while v2.0 has been released in the meantime, which has different package names.