[英]How do I listen to only numeric keypresses?
I want to write a key listener to listen for only numeric keys. 我想编写一个键侦听器,以仅侦听数字键。 How can I achieve this?
我该如何实现?
Here's what I've tried: 这是我尝试过的:
if ( e.getKeyCode() > 96 & e.getKeyCode() < 106
|| e.getKeyCode() > 47 & e.getKeyCode() < 58)
{
// do something
}
What is the problem in this code? 这段代码有什么问题?
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