Expense Table : Table « Swing JFC « Java






  1. Java
  2. Swing JFC
  3. Table

Expense Table

Expense Table
  
/*
Swing, Second Edition
by Matthew Robinson, Pavel Vorobiev

*/

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import java.text.SimpleDateFormat;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class ExpenseReport extends JFrame 
{
  protected JTable m_table;
  protected ExpenseReportData m_data;
  protected JLabel m_title;

  public ExpenseReport() {
    super("Expense Report");
    setSize(570, 200);

    m_data = new ExpenseReportData(this);

    m_table = new JTable();
    m_table.setAutoCreateColumnsFromModel(false);
    m_table.setModel(m_data); 
    m_table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        
    for (int k = 0; k < ExpenseReportData.m_columns.length; k++) {
      TableCellRenderer renderer;
      if (k==ExpenseReportData.COL_APPROVED)
        renderer = new CheckCellRenderer();
      else {
        DefaultTableCellRenderer textRenderer = 
          new DefaultTableCellRenderer();
        textRenderer.setHorizontalAlignment(
          ExpenseReportData.m_columns[k].m_alignment);
        renderer = textRenderer;
      }

      TableCellEditor editor;

      if (k==ExpenseReportData.COL_CATEGORY)
        editor = new DefaultCellEditor(new JComboBox(
          ExpenseReportData.CATEGORIES));
      else if (k==ExpenseReportData.COL_APPROVED)
        editor = new DefaultCellEditor(new JCheckBox());
      else
        editor = new DefaultCellEditor(new JTextField());

      TableColumn column = new TableColumn(k, 
        ExpenseReportData.m_columns[k].m_width, 
          renderer, editor);
        m_table.addColumn(column);   
    }

    JTableHeader header = m_table.getTableHeader();
    header.setUpdateTableInRealTime(false);

    JScrollPane ps = new JScrollPane();
    ps.setSize(550, 150);
    ps.getViewport().add(m_table);
    getContentPane().add(ps, BorderLayout.CENTER);

    JPanel p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));

    ImageIcon penny = new ImageIcon("penny.gif");
    m_title = new JLabel("Total: $", 
      penny, JButton.LEFT);
    m_title.setForeground(Color.black);
    m_title.setAlignmentY(0.5f);
    p.add(m_title);
    p.add(Box.createHorizontalGlue());

    JButton bt = new JButton("Insert before");
    bt.setMnemonic('b');
    bt.setAlignmentY(0.5f);
    ActionListener lst = new ActionListener() { 
      public void actionPerformed(ActionEvent e) { 
        int row = m_table.getSelectedRow();
        m_data.insert(row);
        m_table.tableChanged(new TableModelEvent(
          m_data, row, row, TableModelEvent.ALL_COLUMNS, 
          TableModelEvent.INSERT)); 
        m_table.repaint();
      }
    };
    bt.addActionListener(lst);
    p.add(bt);

    bt = new JButton("Insert after");
    bt.setMnemonic('a');
    bt.setAlignmentY(0.5f);
    lst = new ActionListener() { 
      public void actionPerformed(ActionEvent e) { 
        int row = m_table.getSelectedRow();
        m_data.insert(row+1);
        m_table.tableChanged(new TableModelEvent(
          m_data, row+1, row+1, TableModelEvent.ALL_COLUMNS,
          TableModelEvent.INSERT)); 
        m_table.repaint();
      }
    };
    bt.addActionListener(lst);
    p.add(bt);

    bt = new JButton("Delete row");
    bt.setMnemonic('d');
    bt.setAlignmentY(0.5f);
    lst = new ActionListener() { 
      public void actionPerformed(ActionEvent e) { 
        int row = m_table.getSelectedRow();
        if (m_data.delete(row)) {
          m_table.tableChanged(new TableModelEvent(
            m_data, row, row, TableModelEvent.ALL_COLUMNS,
            TableModelEvent.INSERT)); 
          m_table.repaint();
          calcTotal();
        }
      }
    };
    bt.addActionListener(lst);
    p.add(bt);
      
    getContentPane().add(p, BorderLayout.SOUTH);

    calcTotal();

    WindowListener wndCloser = new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    };
    addWindowListener(wndCloser);
    
    setVisible(true);
  }

  public void calcTotal() {
    double total = 0;
    for (int k=0; k<m_data.getRowCount(); k++) {
      Double amount = (Double)m_data.getValueAt(k, 
        ExpenseReportData.COL_AMOUNT);
      total += amount.doubleValue();
    }
    m_title.setText("Total: $"+total);
  }

  public static void main(String argv[]) {
    new ExpenseReport();
  }
}

class CheckCellRenderer extends JCheckBox implements TableCellRenderer
{
  protected static Border m_noFocusBorder;

  public CheckCellRenderer() {
    super();
    m_noFocusBorder = new EmptyBorder(1, 2, 1, 2);
    setOpaque(true);
    setBorder(m_noFocusBorder);
  }

  public Component getTableCellRendererComponent(JTable table,
   Object value, boolean isSelected, boolean hasFocus, 
   int row, int column) 
  {
    if (value instanceof Boolean) {
      Boolean b = (Boolean)value;
      setSelected(b.booleanValue());
    }

    setBackground(isSelected && !hasFocus ? 
      table.getSelectionBackground() : table.getBackground());
    setForeground(isSelected && !hasFocus ? 
      table.getSelectionForeground() : table.getForeground());
        
    setFont(table.getFont());
    setBorder(hasFocus ? UIManager.getBorder(
      "Table.focusCellHighlightBorder") : m_noFocusBorder);

    return this;
  }
}

class ExpenseData
{
  public Date    m_date;
  public Double  m_amount;
  public Integer m_category;
  public Boolean m_approved;
  public String  m_description;

  public ExpenseData() {
    m_date = new Date();
    m_amount = new Double(0);
    m_category = new Integer(1);
    m_approved = new Boolean(false);
    m_description = "";
  }

  public ExpenseData(Date date, double amount, int category, 
   boolean approved, String description) 
  {
    m_date = date;
    m_amount = new Double(amount);
    m_category = new Integer(category);
    m_approved = new Boolean(approved);
    m_description = description;
  }
}

class ColumnData
{
  public String  m_title;
  int m_width;
  int m_alignment;

  public ColumnData(String title, int width, int alignment) {
    m_title = title;
    m_width = width;
    m_alignment = alignment;
  }
}

class ExpenseReportData extends AbstractTableModel 
{
  public static final ColumnData m_columns[] = {
    new ColumnData( "Date", 80, JLabel.LEFT ),
    new ColumnData( "Amount", 80, JLabel.RIGHT ),
    new ColumnData( "Category", 130, JLabel.LEFT ),
    new ColumnData( "Approved", 80, JLabel.LEFT ),
    new ColumnData( "Description", 180, JLabel.LEFT )
  };

  public static final int COL_DATE = 0;
  public static final int COL_AMOUNT = 1;
  public static final int COL_CATEGORY = 2;
  public static final int COL_APPROVED = 3;
  public static final int COL_DESCR = 4;

  public static final String[] CATEGORIES = {
    "Fares", "Logging", "Business meals", "Others"
  };

  protected ExpenseReport m_parent;
  protected SimpleDateFormat m_frm;
  protected Vector m_vector;

  public ExpenseReportData(ExpenseReport parent) {
    m_parent = parent;
    m_frm = new SimpleDateFormat("MM/dd/yy");
    m_vector = new Vector();
    setDefaultData();
  }

  public void setDefaultData() {
    m_vector.removeAllElements();
    try {
      m_vector.addElement(new ExpenseData(
      m_frm.parse("04/06/99"), 200, 0, true, 
        "Airline tickets"));
      m_vector.addElement(new ExpenseData(
        m_frm.parse("04/06/99"), 50,  2, false, 
        "Lunch with client"));
      m_vector.addElement(new ExpenseData(
        m_frm.parse("04/06/99"), 120, 1, true, 
        "Hotel"));
    }
    catch (java.text.ParseException ex) {}
  }

  public int getRowCount() {
    return m_vector==null ? 0 : m_vector.size(); 
  }

  public int getColumnCount() { 
    return m_columns.length; 
  } 

  public String getColumnName(int column) { 
    return m_columns[column].m_title; 
  }
 
  public boolean isCellEditable(int nRow, int nCol) {
    return true;
  }

  public Object getValueAt(int nRow, int nCol) {
    if (nRow < 0 || nRow>=getRowCount())
      return "";
    ExpenseData row = (ExpenseData)m_vector.elementAt(nRow);
    switch (nCol) {
      case COL_DATE: return m_frm.format(row.m_date);
      case COL_AMOUNT: return row.m_amount;
      case COL_CATEGORY: return CATEGORIES[row.m_category.intValue()];
      case COL_APPROVED: return row.m_approved;
      case COL_DESCR: return row.m_description;
    }
    return "";
  }

  public void setValueAt(Object value, int nRow, int nCol) {
    if (nRow < 0 || nRow>=getRowCount())
      return;
    ExpenseData row = (ExpenseData)m_vector.elementAt(nRow);
    String svalue = value.toString();

    switch (nCol) {
      case COL_DATE: 
        Date  date = null;
        try { 
          date = m_frm.parse(svalue); 
        }
        catch (java.text.ParseException ex) { 
          date = null; 
        }
        if (date == null) {
          JOptionPane.showMessageDialog(null, 
            svalue+" is not a valid date",
            "Warning", JOptionPane.WARNING_MESSAGE);
          return;
        }
        row.m_date = date; 
        break;
      case COL_AMOUNT:
        try { 
          row.m_amount = new Double(svalue); 
        }
        catch (NumberFormatException e) { break; }
        m_parent.calcTotal();
        break;
      case COL_CATEGORY:
        for (int k=0; k<CATEGORIES.length; k++)
          if (svalue.equals(CATEGORIES[k])) {
            row.m_category = new Integer(k);
            break;
          }
        break;
      case COL_APPROVED:
        row.m_approved = (Boolean)value; 
        break;
      case COL_DESCR:
        row.m_description = svalue; 
        break;
    }
  }

  public void insert(int row) {
    if (row < 0)
      row = 0;
    if (row > m_vector.size())
      row = m_vector.size();
    m_vector.insertElementAt(new ExpenseData(), row);
  }

  public boolean delete(int row) {
    if (row < 0 || row >= m_vector.size())
      return false;
    m_vector.remove(row);
      return true;
  }
}








Related examples in the same category

1.Creating a JTable Component
2.Creates tables that allow rows and columns to be added or deleted
3.Build a table from list data and column names
4.Getting the Number of Rows and Columns in a JTable Component
5.Appending a Row to a JTable Component
6.Add columns to a table through DefaultTableModel
7.Insert a row to a table through DefaultTableModel
8.Insert a row to a table through DefaultTableModel at specified row
9.Scroll Table SampleScroll Table Sample
10.Simple demonstration of JTableSimple demonstration of JTable
11.Create a table with two dimensional arrayCreate a table with two dimensional array
12.Create table with Unicode dataCreate table with Unicode data
13.Resize TableResize Table
14.StockTable 6: Action and Dynamic DisplayStockTable 6: Action and Dynamic Display
15.JTable selection eventsJTable selection events
16.A table with the ability to play with row and column selectionsA table with the ability to play with row and column selections
17.Table Selection modeTable Selection mode
18.Display ResultSet in Table (JTable)
19.JTable(Table) with JDBC and ResultSetJTable(Table) with JDBC and ResultSet
20.List UI Properties in a JTable and sortableList UI Properties in a JTable and sortable
21.Property Table: Use JTable to display and edit propertiesProperty Table: Use JTable to display and edit properties
22.Table with tool tips for both cells and column headersTable with tool tips for both cells and column headers
23.StockTable 4: Table SorterStockTable 4: Table Sorter
24.JTable sorter:click the table header to sort a column and a tableJTable sorter:click the table header to sort a column and a table
25.Creating image out of a JTable
26.JTable.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
27.JTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
28.JTable.setColumnSelectionAllowed(boolean b);
29.JTable.setRowSelectionAllowed(boolean b);
30.JTable.setCellSelectionEnabled(boolean b);
31.Handle selection and model change events for a JTable.
32.ListSelectionModel rowSelMod = JTable.getSelectionModel();
33.ListSelectionModel colSelMod = JTable.getColumnModel().getSelectionModel();
34.JTree.getModel().addTreeModelListener(new TreeModelListener())
35.Move the last visible column so it becomes the first visible column
36.the last column is moved to the first position
37.Allowing the User to Resize a Column in a JTable Component
38.Retrieve the value in the visible cell (1,2) in a JTable
39.Retrieve the value in cell (1,2) from the model
40.Change a cell in the 2nd visible column
41.Change a cell in the 3rd column in the model
42.Showing the Table Header in a Non-Scrollable JTable Component
43.Changing the Name of a Column in a JTable Component
44.Displaying an Icon in a Column Head of a JTable Component
45.Implementing Variable-Height Column Headers in a JTable Component
46.Removing the Column Headers from a Scrollable in a JTable Component
47.Creating a Custom Column Header Renderer in a JTable Component
48.Setting Column Header Tool Tips in a JTable Components
49.Setting Tool Tips on Cells in a JTable Component
50.Enable row selection (default) in a JTable
51.Enable column selection in a JTable
52.Enable cell selection in a JTable
53.Get default selection mode:MULTIPLE_INTERVAL_SELECTION
54.Allow only single a selection
55.Allow selection to span one contiguous set of rows, visible columns, or block of cells
56.Allow multiple selections of rows, visible columns, or cell blocks (default)
57.Select a column - column 0 in a JTable
58.Select an additional range of columns - columns 1 to 2
59.Deselect a range of columns - columns 0 to 1
60.Select a row - row 0
61.Select an additional range of rows - rows 1 to 2
62.Deselect a range of rows - rows 0 to 1
63.Select a cell: cell (2,1)
64.Extend the selection to include all cells (5,3)
65.Deselect a cell: cell (3,2), All cells in the row and column containing (3,2) are deselected.
66.Toggles the selection state, if it were called again, it exactly reverses the first call.
67.Select all cells
68.Deselect all cells
69.Column selection is enabled, get the indices of the selected columns
70.Row selection is enabled, Get the indices of the selected rows
71.Get selected row and selected index
72.Get the min and max ranges of selected cells
73.Check each cell in the min and max ranges of selected cells
74.Disabling Selections in a JTable Component
75.Getting the Anchor Cell in a JTable Component
76.Creating a Scrollable JTable Component
77.Disable auto resizing to make the table horizontal scrollable
78.Determining If a Cell Is Visible in a JTable Component
79.Making a Cell Visible in a JTable Component
80.Scrolling a Cell to the Center of a JTable Component
81.Show both horizontal and vertical grid lines (the default)
82.Don't show any grid lines
83.Show only vertical grid lines
84.Show only horizontal grid lines
85.Set the grid color
86.Getting the Gap Size Between Cells in a JTable Component
87.Add 5 spaces to the left and right sides of a cell.
88.Increase the row height
89.Programmatically Starting Cell Editing in a JTable Component
90.Save the current value in the cell being edited and stops the editing process
91.Discard any changes made by the user and stops the editing process
92.Disabling User Edits in a JTable
93.Disabling User Edits in a JTable with DefaultTableModel
94.Sorting the Rows in a JTable Component Based on a Column
95.Sorting a Column in a JTable Component
96.Listening for Selection Events in a JTable Component
97.Listening for Changes to the Rows and Columns of a JTable Component
98.Listening for Column-Related Changes in a JTable Component
99.Listening for Clicks on a Column Header in a JTable Component
100.Sorting and Filtering Tables
101.Use a regexFilter to filter table content
102.Creating a JTable with rows of variable height
103.Scroll JTable To Center