How to convert RAW pixels to image?

Question

Java

I tried to gain experience in working with hex and writing an unpacker.
Almost everyone won but faced such a problem, the developers of the game packed all the textures in their raw form without headers.
Ultimately, I have the exact resolution of the textures, the estimated color, and a set of bytes with pixels. The pixels themselves are stored in an array of bytes. I wanted to display them on the form, and here it's just a trick in jav, I can't figure out how to convert these bytes into pixels with normal color.
I suppose that it should be something like this:
1) Create an object that is a picture with such a resolution and color.
2) Give an array of bytes to this picture, specifying the color palette.
Or will you have to manually parse the entire array, write a palette converter and manually create some output format (png for example)?
Tell me or send a book to the article where a similar problem was solved. It seems that I don’t need it, but it’s very interesting =)
If anyone is interested in seeing the excavations of the format, you can look here , there is also a template for the 010 editor and my unpacker (sorry for handwriting).