Source Code : Total(Calculate) Row Example

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Total(Calculate) Row Example

 
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html

/*
 * (swing1.1beta3) swing#960
 */


import java.awt.Container;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.event.ChangeEvent;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

/**
 * @version 1.0 12/03/98
 */

class DecimalRenderer extends DefaultTableCellRenderer {
  DecimalFormat formatter;

  DecimalRenderer(String pattern) {
    this(new DecimalFormat(pattern));
  }

  DecimalRenderer(DecimalFormat formatter) {
    this.formatter = formatter;
    setHorizontalAlignment(JLabel.RIGHT);
  }

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

public class TotalRowExample extends JFrame {
  final private int TOTAL_ROW = 3;

  final private int TOTAL_COLUMN = 1;

  TotalRowExample() {
    super("Total Row Example");

    final DecimalFormat formatter = new DecimalFormat("###,##0.00");
    DefaultTableModel dm = new DefaultTableModel() {
      public void setValueAt(Object value, int row, int col) {
        Vector rowVector = (Vector) dataVector.elementAt(row);
        if (col == TOTAL_COLUMN) {
          Double d = null;
          if (value instanceof Double) {
            d = (Double) value;
          } else {
            try {
              d = new Double(((Number) formatter
                  .parse((String) value)).doubleValue());
            } catch (ParseException ex) {
              d = new Double(0.0);
            }
          }
          rowVector.setElementAt(d, col);
        } else {
          rowVector.setElementAt(value, col);
        }
      }

      public boolean isCellEditable(int row, int col) {
        if (row == TOTAL_ROW)
          return false;
        return true;
      }

      public Class getColumnClass(int col) {
        if (col == TOTAL_COLUMN)
          return Number.class;
        return String.class;
      }
    };

    dm.setDataVector(new Object[][] { { "coffee", new Double(0.0) },
        { "tea", new Double(0.0) }, { "cocoa", new Double(0.0) },
        { "total", new Double(0.0) } },
        new Object[] { "Item", "Price" });

    JTable table = new JTable(dm) {
      public void editingStopped(ChangeEvent e) {
        super.editingStopped(e);
        reCalcurate(getModel());
        repaint();
      }
    };

    table.getColumn("Price")
        .setCellRenderer(new DecimalRenderer(formatter));

    JScrollPane scroll = new JScrollPane(table);
    Container content = getContentPane();
    content.add(scroll);
    setSize(300, 120);
    setVisible(true);
  }

  private void reCalcurate(TableModel ml) {
    if (ml == null)
      return;
    double total = 0.0;
    for (int i = 0; i < TOTAL_ROW; i++) {
      total += ((Double) ml.getValueAt(i, TOTAL_COLUMN)).doubleValue();
    }
    ml.setValueAt(new Double(total), TOTAL_ROW, TOTAL_COLUMN);
  }

  public static void main(String[] args) {
    TotalRowExample frame = new TotalRowExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
  }
}


           
         
  

Thank with us