hey bhuvana,

the registraton process had begun and its commencement is declared too, however to change to reshuffle you choices, you still have time only till 25th june, 5PM after which the 1st list comes out on the 27th. i am also posting a link here please do go through it, i am sure it will solve all you doubts regading choice fillingd, important dated and others.

https://engineering.careers360.com/articles/josaa-registration-and-choice-filling

all the best!