The following package is not available. package id tool-build; 24.2.1

[Android Central Question]

I am new on android development. I have searched a lot on google to resolve this problem but i could't get the solution.
I found android sdk release, there are many tool-builds versions but not exist 24.2.1.
When i go to tool>sdk manager>sdk tools i got multiple tool builds except 24.2.1.
I installed latest version of android but the problem still remain.
i have JDK 8.