number_format() and JTable in java

[sysout]

hai palz, how to convert 1000000 to : 1.000.000 ?

And how to change JTable width and Center the rows? :D
sorry for the questions and thank you very much for your answer.

thanksss palz..;)

[mrmatt1111]

java.text.NumberFormat nf = java.text.NumberFormat.getInstance();

String valString = nf.format(value).replace(",",".");

You might play around with the locale of NumberFormat to see if there is one for your local that has the '.' already.

[r035198x]

hai palz, how to convert 1000000 to : 1.000.000 ?

And how to change JTable width and Center the rows? :D
sorry for the questions and thank you very much for your answer.

thanksss palz..;)

For the width, how about checking the API specs for the classes you are using for the tables to see what methods are available.

The formatting is much easier but you'll need to be specific. Is that the only conversion you want to do or was that just an example? Are decimal point numbers allowed? e.t.c

[sysout]

java.text.NumberFormat nf = java.text.NumberFormat.getInstance();

String valString = nf.format(value).replace(",",".");

You might play around with the locale of NumberFormat to see if there is one for your local that has the '.' already.

any full examples palz?

int A = 1000000;
String B;

B -> can be 1.000.000 ?
any code to implement this? (sorry I'm newbie)

[r035198x]

java.text.NumberFormat nf = java.text.NumberFormat.getInstance();

String valString = nf.format(value).replace(",",".");

You might play around with the locale of NumberFormat to see if there is one for your local that has the '.' already.

What do you suppose that will do?

[r035198x]

any full examples palz?

int A = 1000000;
String B;

B -> can be 1.000.000 ?
any code to implement this? (sorry I'm newbie)

Read my response above again.

[Fubarable]

If you are trying to format the data shown in your JTable you'll probably want to create a table cell renderer that uses a NumberFormat that uses the proper locale. To learn how to do that check out this: How to Use Tables (The Java™ Tutorials > Creating a GUI with JFC/Swing > Using Swing Components)

Here's a simple example:

import java.text.NumberFormat;
import java.util.Locale;

import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;

public class NumberFormatFun {
  public static void main(String[] args) {
    final NumberFormat usNF = NumberFormat
        .getInstance(Locale.US);
    final NumberFormat germanyNF = NumberFormat
        .getInstance(Locale.GERMANY);

    Integer[][] data = { { 1000000, 2000000, 3000000 },
        { 1515151, 2525252, 3535353 } };
    String[] header = { "A", "B", "C" };

    DefaultTableModel model = new DefaultTableModel(data,
        header);

    JTable table = new JTable(model);

    JTable usTable = new LocaleTable(model, usNF); 
    JTable germanyTable = new LocaleTable(model, germanyNF);

    JOptionPane.showMessageDialog(null, new JScrollPane(
        table), "No Formatting", JOptionPane.PLAIN_MESSAGE);
    JOptionPane.showMessageDialog(null, new JScrollPane(
        usTable), "US Formatting", JOptionPane.PLAIN_MESSAGE);
    JOptionPane.showMessageDialog(null, new JScrollPane(
        germanyTable), "Germany Formatting", JOptionPane.PLAIN_MESSAGE);

  }
}

class LocaleRenderer extends DefaultTableCellRenderer {
  NumberFormat numberFormat;

  public LocaleRenderer(NumberFormat nf) {
    super();
    this.numberFormat = nf;
  }

  public void setValue(Object value) {
    setText((value == null) ? "" : numberFormat
        .format(value));
  }
}

class LocaleTable extends JTable {
  private TableCellRenderer renderer;

  public LocaleTable(DefaultTableModel model, NumberFormat format) {
    super(model);
    renderer = new LocaleRenderer(format);
  }
  
  public TableCellRenderer getCellRenderer(int row,
      int column) {
    return renderer;
  }
}

[sysout]

great, that's absolutely works palz, but I don't understand how to combine with my code.
I'm newbie, my JTable was automatically created by Netbeans, even the code can't be edited.

BuatPemesanan.java - FileFactory

that's my code pals ^^

[r035198x]

The morale of the story is not to use Netbeans (or any IDE for that matter) when you are still learning the Java basics.

[Fubarable]

...but I don't understand how to combine with my code.
I'm newbie, my JTable was automatically created by Netbeans, even the code can't be edited.

Then you may be Borked. Your options are: either see if NetBeans will allow you to modify your JTable to accept custom cell renderers or do as suggested above (and as I heartily second), do your Swing coding by hand.

[sysout]

finally, It was solved.
here's the number_format in Java code :

import java.text.NumberFormat;
import java.util.Locale;


public class trial {
  public static void main(String[] args) {
    float amount = (float) 54321.85;
    NumberFormat usFormat = NumberFormat.getIntegerInstance(Locale.US);
    System.out.println(usFormat.format(amount));
    NumberFormat germanFormat = NumberFormat.getIntegerInstance(Locale.GERMANY);
    System.out.println(germanFormat.format(amount));
  }
}

hope that this code can help others that has the same problems like me ^^
thanks palz for your help