State tax filing

assuming you are not reporting any IRA distributions ,
you can do it this way
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treat the 1099-R as an IRA
box 1,2a your pension amount
check total distribution
check the IRA box and code 2 in box 7
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in the NJ form "Pensions Wks-SP"
set Line 4a = pension amount and 1a = zero.
you should see the pension amount on Line 8.
and on NJ 20b
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The amount will be taxable on federal Form 1040.

 

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If you have an IRA unrecovered contributions history you'll have to save the numbers on paper or a spreadsheet to be restored later.