please suggest me all the steps involved in building ODK aggregate source using eclipse in windows.
Hi @Manish_Sharma, we're glad you're here! When you get a chance, please introduce yourself on this forum thread.
Have you looked at the documentation on setting up Aggregate in a variety of environments:
https://docs.opendatakit.org/aggregate-install/
You can also search the forum, for example using keywords "aggregate eclipse windows" to see what similar discussion other people have had:
https://forum.getodk.org/search?q=aggregate%20eclipse%20windows
If you have more detailed questions that haven't been answered, please post them.