在Java中将String转换为double

问题描述：

如何将String(例如"12.34")转换为Java中的double?

How can I convert a String such as "12.34" to a double in Java?

答

您可以使用 Double.parseDouble() 将 String 转换为 double:

You can use Double.parseDouble() to convert a String to a double:

String text = "12.34"; // example String
double value = Double.parseDouble(text);

对于您的情况，它看起来像您想要的:

For your case it looks like you want:

double total = Double.parseDouble(jlbTotal.getText());
double price = Double.parseDouble(jlbPrice.getText());