如果用于初始化文本字段的内容是双精度字符，如何在文本字段上加上逗号？

Question

How do I put a comma on a textfield if what is used to initialize the textfield is a double?

So, the declared double variable is equal to, lets say, 10,000. I use it to put a "10,000" on a textfield. So, this is what I want to happen...

This kind of result:

However, what I get is something like this:

How do I make the output in the textfield into "24,508.0" (with a comma) instead of just "24508.0"? I was thinking, maybe, I could turn it into an array. But how?

Answer 1

You have to use a formatted text field. Check out this link for more information. I would also like to note that a Boolean is either true or false. Not 10,000.

Answer 2

double d = 10000000.5
System.out.println(NumberFormat.getNumberInstance(Locale.US).format(d));