setWidth string | Member | | Join Date: Aug 2007
Posts: 38
| |
I'm doing a simple program to learn java. I have the input and math parts right. It just isn't displaying right. It outputs a list of about 11 things-- with the format "string $ xx.xx"
In each line the '$'s should be aligned and the decimal point should be aligned.
This is what it currently shows- 
- package excercise6;
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import java.swing.*;
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/**
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*
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* @author dye1107
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*/
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public class Main {
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/* @param args the command line arguments
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*/
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public static void main(String[] args) {
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String str, name;
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Double gross, net;
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Double fed, state, ss, medicare, pension;
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final Double health=75.00;
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name = JOptionPane.showInputDialog("What is your name: ");
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str = JOptionPane.showInputDialog("What is your gross pay: ");
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gross = Double.parseDouble(str);
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fed = gross*0.15;
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state = gross*0.035;
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ss = gross*0.0575;
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medicare = gross*0.0275;
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pension = gross*0.05;
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net = gross-fed-state-ss-medicare-pension-health;
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JOptionPane.showMessageDialog(null, name + "\n" + String.format("%-40s", "Gross Amount:")+ "$" + String.format("%10.2f", gross) + "\n" + String.format("%-40s", "Federal Tax:") + "$" + String.format("%10.2f", fed) + "\n" + String.format("%-40s", "State Tax:") + "$"+ String.format("%10.2f", state) + "\n" + String.format("%-40s", "Social Security Tax:") + "$"+ String.format("%10.2f", ss) + "\n" + String.format("%-40s", "Medicare/Medicade Tax:") + "$"+ String.format("%10.2f", medicare) + "\n" + String.format("%-40s", "Pension Plan:") + "$"+ String.format("%10.2f", pension) + "\n" + String.format("%-40s", "Health Insurance:") + "$"+ String.format("%10.2f", health));
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}
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}
|  | Expert | | Join Date: Mar 2007
Posts: 10,611
| | | re: setWidth string
As you already saw tabs and spaces don't work. A JOptionPane accepts html text as well; you can put your text and figures in a table and display that instead of just a String.
kind regards,
Jos
| | Member | | Join Date: Aug 2007
Posts: 38
| | | re: setWidth string
yep, I did try '\t', but as I found, it didn't work.
I was almost certain that the - String.format("%-40s",string)
would have made each string take a length of 40. Could you tell me why it doesn't?
| | Member | | Join Date: Aug 2007
Posts: 38
| | | re: setWidth string
PS-- I'm pretty sure teacher doesn't expect us to do any HTML
Java Programming, 3rd Edition, ISBN 1-4239-0135-5
By DS Malik, Published by Thomson Course Technology
Chap 3
| | Expert | | Join Date: Mar 2007
Posts: 10,611
| | | re: setWidth string
Quote:
Originally Posted by jpenguin  yep, I did try '\t', but as I found, it didn't work.
I was almost certain that the - String.format("%-40s",string)
would have made each string take a length of 40. Could you tell me why it doesn't? The default font of a JOptionPane is a proportional font (not all characters have the same width). You could try to change its font to, say, Courier New.
kind regards,
Jos
| | Member | | Join Date: Aug 2007
Posts: 38
| | | re: setWidth string
thanks, that was driving me crazy.
I set my JOptionPanes to use a MonoSpace font, and everthing lines up! :-)
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