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keshava65keshava65 

what is ApexPages.currentPage().getParameters(). can explain code please

Sagar PareekSagar Pareek
This will let you take the values from the paramteres that are present in URL of the current Page. 
praveen murugesanpraveen murugesan
Hi Kishore,

From that itself you will get to know this,

ie., Apexpages there will lot of page current page -->Querying from the current page; getParameter()--> from the current page URL. Values which we passing as a parameter.

Mark this as best answer if its helps.

Thanks.

Praveen Murugesan.