Pasting to long of a text into the Minecraft Seed Generator will cause the game to stop responding

When I tried copying and pasting the text of The Gettysburg Address (as in the whole thing) into the seed generator, my game stopped responding. I am guessing it is because the seed did not support that long of text in that space, it may be a problem with Java, or it may just be my old computer. But, I'm no expert, so may someone investigate this, please.

I am on an old laptop and I don't know how to get into Device Manager to find my hardware.