Help Round decimal 2 palces

I tend to use super class NumberFormat, because I can never remember the jiggery-pokery of those patterns:

import java.text.*;

public class Example {

public static void main(String[] args) {

NumberFormat fmt = NumberFormat.getInstance();

fmt.setMinimumFractionDigits(2);

fmt.setMaximumFractionDigits(2);

System.out.println(fmt.format(200.0));

System.out.println(fmt.format(200.115));

System.out.println(fmt.format(200.125));

}

}

Just be aware that NumberFormat/DecimalFormat uses half-even rounding.

DrLaszloJamfa at 2007-7-8 23:27:50 >

I Was not asking to be spoon feed zadok, I have had 3 classes and I am just learning.

DrLaszloJamf ,

I have read through this, http://java.sun.com/j2se/1.5.0/docs/api/java/text/DecimalFormat.html

As I am reading this, if I do not set the local it will apply the default, thus meaning I will not have to use the getInstance(loc); portion of the code?

829a at 2007-7-8 23:27:50 >

> It's not clear what you mean by "format each

> number"?

> Do you mean writing

> > System.out.print(fmt.format(doubleValue));

>

> instead of

> > System.out.print(doubleValue);

>

I really not sure what I am getting at, other than each number I hardcode must have some type of print function. With only 3 classes under my belt, I may just be chewing off more than I can digest at this point. I am just trying to get ahead and I am sure we will go over this at some point this semester.

829a at 2007-7-8 23:27:50 >

My updated code

import javax.swing.JOptionPane;

import java.text.DecimalFormat;

import java.text.NumberFormat;

public class CheckingAcct

{

//int decimalPlaces = 2;

// Truncates the big decimal value.

//bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_DOWN);

//String string = bd.toString();

/*DecimalFormat df = new DecimalFormat ( "0.00" );

double balance = 200.00;

System.out.println(df.format(balance));*/

//DecimalFormat twoDigits = new DecimalFormat ( "0.0#" );

//DecimalFormat decimalFormat = (DecimalFormat)numberFormat;

//decimalFormat.applyPattern("0.0#");

public static void main (String args[])

{

String strBalance,

strDeposit,

strChecks;

DecimalFormat df = new DecimalFormat ( "0.00" );

double balance = 200.00,

deposit,

lbcharge = 2.00,

nsfcharge = 25.00,

checks;

System.out.println(df.format(balance));

System.out.println(df.format(lbcharge));

System.out.println(df.format(nsfcharge));

/*double //balance = 200.00,

deposit,

lbcharge = 2.00,

nsfcharge = 25.00,

checks;

*/

//Display Starting Balance

JOptionPane.showMessageDialog (null, "Your current balance is:$" + balance);

//calculate balance

strDeposit = JOptionPane.showInputDialog ("Please enter your deposit amount:$");

deposit = Double.parseDouble (strDeposit);

balance = deposit + balance;

JOptionPane.showMessageDialog (null, "Your current balance after deposit is:$" + balance);

strChecks = JOptionPane.showInputDialog ("Please enter the total amount of checks written:$");

checks = Double.parseDouble (strChecks);

balance = balance - checks;

//Low Balance

if (balance < 100.00)

{

JOptionPane.showMessageDialog (null, "You have fallen below the minium required balance and you have been charged:$" + lbcharge);

balance = balance - lbcharge;

}

else

{

lbcharge = 0.00;

}

//NSF Charge

if (balance <= 0.00)

{

JOptionPane.showMessageDialog (null, "You have a negative balance and you have been charged:$" + nsfcharge);

balance = (balance - nsfcharge);

JOptionPane.showMessageDialog (null, "Your current balance is:$" + balance);

}

else

JOptionPane.showMessageDialog (null, "Your balance is:$" + balance);

System.exit (0);

}

}

829a at 2007-7-21 16:55:24 >