Store 7 Randomly generated numbers & names in an array Java

I'm not sure at all how to go about this, but I want to generate 1000 randomly generated 7 digit numbers, and 5 letter names. The names could be like "FjwaS" anything, it doesnt have to be an actual name. I want to store all these values in 2 different arrays. I'm not sure at all how to go about this, but I