用JAVA语言写的一个打字游戏,也就是浏览器上随机位置出现随机颜色字母,玩家在键盘上输入的字母和浏览器里出现的字母一致,该字母则会变色后消失!-JAVA language used to write a typing game, that is, a random location on the browser appears random color letters, players enter the letters on the keyboard and the browser appea