Thread: decimal format not working

import java.util.Formatter;
    import java.util.*; 
    import java.text.DecimalFormat;
 
public class program5c
    {   
        static DecimalFormat df=new DecimalFormat("#.##"); 
System.out.printf("%-15s", df.format(number));
}

Anyway I can get the printf feature to work with decimal format?

Employee Payroll (Sorted by last name)
F.Name          L.Name     Hourly Wage     Hours Worked Gross Pay  20% Tax    Net Pay   
Paul            Allen            $21.50           34       731.0      146.20000000000002 584.8     
Steve           Ballmer       $18.75           35        656.25     131.25     525.0     
Bill            Gates            $18.50           40        740.0      148.0      592.0     
Steve           Jobs          $10.75           25         268.75     53.75      215.0     
John            Smith         $14.75           30         442.5      88.5       354.0     
 
Total Hours     Total Gross     Total Net       Highest Net Pay
164              2838.5              2270.8

Basically I want all the decimal outputs to be to 2 decimal places. I'm not getting any errors but the program doesn't seem to do that. Also all the numbers are in a string array so I have to use Double.parseDouble to convert them to doubles and then output.

This is the output:

Employee Payroll (Sorted by last name)
F.Name          L.Name     Hourly Wage     Hours Worked Gross Pay  20% Tax    Net Pay   
Paul            Allen           $21.50           34         731.0      146.20000000000002 584.8     
Steve           Ballmer         $18.75           35         656.25     131.25     525.0     
Bill            Gates           $18.50           40         740.0      148.0      592.0     
Steve           Jobs            $10.75           25         268.75     53.75      215.0     
John            Smith           $14.75           30         442.5      88.5       354.0     
 
Total Hours     Total Gross     Total Net       Highest Net Pay
164.0           $2838.5          $2270.8          Bill Gates

I want gross pay, tax, and netpay to show 2 decimal places. Example: 731.0 should be 731.00, and 584.8 should be 584.80.



Code of functin that makes the current output:

 static public void chart(String value, String value2[][])
        {
            System.out.println("Employee Payroll (Sorted by last name)");
//headings
            System.out.printf( "%-15s %-10s %-15s %-10s %-10s %-10s %-10s", "F.Name", "L.Name", "Hourly Wage", "Hours Worked", "Gross Pay", "20% Tax", "Net Pay" );
            System.out.println();
//data for each employee
            for(int x = 0; x<=value2.length-2;x++)
            {
 
                System.out.printf("%-15s %-15s $%-15s %-10s %-10s %-10s %-10s", value2[x][0],value2[x][1], value2[x][2],value2[x][3],value2[x][4],value2[x][5], value2[x][6]);
 
                System.out.println();
 
            }
 
            System.out.println();
//total employee values
            System.out.printf( "%-15s %-15s %-15s %-10s", "Total Hours", "Total Gross", "Total Net", "Highest Net Pay" );
            System.out.println();
 
            System.out.printf( "%-15s $%-15s $%-15s %-10s", value2[5][0],value2[5][1],value2[5][2], value);
 
            }
        }

I found part of the problem, it doesn't add 2 decimal places if there is only 1 decimal place. 8.5 doesn't turn into 8.50. I just need a way to add a 0 if it has only 1 decimal place

This works

DecimalFormat df=new DecimalFormat("#.00");