visit site: https://sites.google.com/view/code-jamm
A complete learning platform for java programming from scratch to advanced and practicing programmings. it has an inbuilt compiler, different secriona of programs and concepts to learn like advanced programs, easy programs, moderate level programs, datastructures , oops concepts, matrix, pattern printing, heap, stack, queue, linked list, arrays, collections, strings, JDBC, trees, functions in java, reference materials, learning tutorial videos, etc...