在JOptionPane中格式化字符串值

Question

I want to format a string, so instead of the value reading: 1.599999, it reads 1.59. For the rest of my program, I've been using: %.2f to format the JLabels, but when I try do that in a JOptionPane, it doesn't recognize it as format code, but as text.

EDIT:

  amountEntered = JOptionPane.showInputDialog(finishPayInput, "Please enter the full total of: £%.2f" + convPrice);

Answer 1

amountEntered = JOptionPane.showInputDialog(finishPayInput,
    String.format("Please enter the full total of: £%.2f", convPrice))

Answer 2

Split it out into a String variable and put it inline (I avoid putting it directly inline for smaller lines of code and easier debugging, personal preference though):

String fullTotal = String.format("Please enter the full total of: £%.2f", convPrice);
amountEntered = JOptionPane.showInputDialog(finishPayInput, fullTotal);