请教，Awt如何实现计算器功能。比如点按钮1，文本框出现1，再点2，文本框出现12 请教，Awt如何实现计算器功能。比如点按钮1，文本框出现1，再点2，文本框出现12 。这样，我现在写出来， 点1 出现1 ，点2 就把1覆盖了， 感觉 应该很简单就解决了，但我好像走到 ...

I've got a project I'm doing for school, and while I have a workable class right now, I would like to spiff up what I have with radio buttons. Specifically, I want a general "submit" button to change ...