How do i recover pictures and contacts from a samsung j1?

If you want to recover pictures and contacts on your Samsung phone J1, I think you need a software like MobiKin Doctor for Android, then you can regain the data by this way:
How to Recover Deleted Contacts from Android
Recover Deleted Photos Pictures from Android Phone

Pro Samsung data recovery program offers us an easy way to recover pictures and contacts from all kinds of Samsung mobile phones before they are overwritten. First connect Samsung J1 to computer via usb cable, open theprogram. Then we can easily recover them to computer.
Data Recovery for Samsung Galaxy S8

If your phone cannot charge, you may try this way to recover your lost pics and contacts.

GT Recovery for Windows Download: www.gtrecovery.net.

Lost your photos on Android phone & need to recover deleted pictures, try GT Recovery for Windows- the World's 1st Data Recovery Software for Android smart phones.

It can directly recover deleted pictures, photos lost due to deleting, restoring factory settings, flashing ROM, rooting, etc., from SD cards inside Android devices.

It let you preview the deleted photos before recovery. Watch the video tutorial to learn how to retrieve photos from Android phone easily with simple clicks.

Key features of Data Recovery - GT Recovery for Android:
1). Preview & selectively retrieve photos and video lost due to any problem
2). Support all Android phones/tablets, like Samsung, HTC, LG, Motorola...
3). Only read and recover the data, no personal info leaking, 100% safe

The best way to recover deleted photos and contacts, I think you need to use a Samsung data recovery tool, it can help you solve this problem quickly. And you need to worry about data loss problem any more.
Direct guides:

How Can Restore Lost Files from Samsung Galaxy