The lectern in Minecraft requires 1 bookshelf and 4 wooden slabs. It functions as a librarian job block and a redstone signal source. It can only hold written books or a book and quill in Minecraft.

JASM is an assembler/disassembler for JVM bytecode. It provides a nice syntax for writing JVM classes in a bytecode-focused assembly language, and can also disassemble any Java .class file to JASM ...