Java Swing-how do I get the value of a JTable to display dynamically in a JPanel
I need the sum of the values from the values entered in the JTable to be included in the text of the partition field in the adjoining JPanel.Also posted here - http://www.coderanch.com/t/512189/GUI/java/value-JTable-show-up-dynamically.
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import javax.swing.table.DefaultTableCellRenderer;
import java.awt.*;
import java.util.*;
import java.awt.color.*;
import java.awt.event.*;
public class TableandPanel extends JFrame
{
public static void main(String[] args)
{
JFrame frame = new JFrame("Table and Panel");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(100, 300);
frame.setVisible(true);
String colHdrA = "Some Values";
TableofSums tableofSums = new TableofSums(10, colHdrA);
int sumValue = tableofSums.getSumValues();
String sumValueS = String.valueOf(sumValue);
SumValuesPanel newPanel = new SumValuesPanel( "Score", sumValueS, "Rank");
JPanel thePanel = new JPanel();
thePanel.add(new JScrollPane(tableofSums));
thePanel.add(newPanel);
frame.add(thePanel);
frame.pack();
frame.setVisible(true);
}
}
//---------table class starts here---------------------------
public class TableofSums extends JPanel implements TableModelListener
{
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
JFrame frame = new JFrame("Table");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(208, 230);
//frame.add(new JScrollPane(table));
frame.setVisible(true);
String colHdrA = "Some Values";
TableofSums tableofSums = new TableofSums(10, colHdrA);
frame.setContentPane(tableofSums);
//frame.add(new JScrollPane(timerepTable));
frame.pack();
frame.setVisible(true);
}
});
}
private int noOfRows = 0;
private JTable table;
private String colName = null;
private int sumValues = 0;
public TableofSums(int noOfRows, String colName)
{
this.noOfRows = noOfRows;
this.colName = colName;
makeTable();
}
private void makeTable()
{
Object columns[] = new Object[] {"<html><center>" + this.colName + "</center></html>"};
Object[][] data = new Object[noOfRows][1];
for (int i = 0; i<noOfRows; i++)
{
data[0] = new Integer(0);
}
DefaultTableModel model = new DefaultTableModel(data, columns);
model.addTableModelListener(this);
table = new JTable(model)
{
@Override
public boolean isCellEditable(int row, int column)
{
switch (column)
{
case 0: return true;
}
return false;
}
@Override
public Class<?> getColumnClass(int columnIndex)
{
switch (columnIndex)
{
case 0: return Integer.class;
}
return null;
}
};
table.setRowHeight(25);
table.setDefaultRenderer(Integer.class, new SomeCellRenderer());
this.add(new JScrollPane(table));
}
///--------------------------------tablemodellistener---------------------------------
//gets the values entered in the table and calculates the sum
//-------------------------------------------------------------------------------------------
public void tableChanged(TableModelEvent e)
{
System.out.println(e.getSource());
if(e.getType() == TableModelEvent.UPDATE)
{
int row = e.getFirstRow();
int column = e.getColumn();
TableModel model = table.getModel();
sumValues = 0;
for (int i=0; i<noOfRows; i++)
{
int intValue = (Integer)model.getValueAt(i, column);
sumValues += intValue;
}
System.out.println ("row modified: " + row + " sumValues: " + sumValues);
}
}
//--------------------------------------cell renderer------------------------------------------------------
public class SomeCellRenderer extends JLabel implements TableCellRenderer
{
public SomeCellRenderer()
{
setOpaque(true);
}
public Component getTableCellRendererComponent(JTable table, Object
value, boolean isSelected, boolean hasFocus, int row, int column)
{
String cellValue = String.valueOf(value);
this.setText(cellValue);
this.setBackground(Color.LIGHT_GRAY);
this.setHorizontalAlignment(SwingConstants.CENTER);
return this;
}
}
public int getSumValues()
{
return sumValues;
}
}
//-------------------------Panel Class Starts here-------------------------------------
public class SumValuesPanel extends JPanel
{
/**
* @param args
*/
public static void main(String[] args)
{
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("SumValuesPanel");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SumValuesPanel newContentPane = new SumValuesPanel( "Score", "XX.XX", "Rank");
frame.setContentPane(newContentPane);
frame.pack();
frame.setVisible(true);
}
//------Variables declaration
private JPanel thePanel;
private JLabel scorejLabel;
private JTextField ScorejTextField;
private String scoreLabel;
private String scoreValue;
private JLabel rankLabel;
private String rankLabelTxt;
private JTextField rankTextField;
private String rankText;
//-------End of variables declaration
public SumValuesPanel (String setScoreLabel,String setScoreVal, String rankLabel)
{
scoreLabel = setScoreLabel;
scoreValue = setScoreVal;
this.rankLabelTxt = rankLabel;
createSumValuesPanel();
}
private void createSumValuesPanel()
{
thePanel = new JPanel();
rankLabel = new JLabel();
rankTextField = new JTextField();
scorejLabel = new JLabel();
ScorejTextField = new JTextField();
thePanel.setBackground(new Color(235, 233, 230));
thePanel.setBorder(BorderFactory.createLineBorder(new Color(0, 0, 0)));
thePanel.setPreferredSize(new Dimension(200, 180));
scorejLabel.setHorizontalAlignment(SwingConstants.CENTER);
scorejLabel.setText(scoreLabel);
scorejLabel.setBorder(BorderFactory.createLineBorder(new Color(0, 0, 0)));
scorejLabel.setPreferredSize(new Dimension(40, 20));
ScorejTextField.setEditable(false);
ScorejTextField.setHorizontalAlignment(JTextField.CENTER);
ScorejTextField.setText(scoreValue);
ScorejTextField.setBorder(BorderFactory.createLineBorder(new Color(0, 0, 0)));
ScorejTextField.setMaximumSize(new Dimension(60, 25));
ScorejTextField.setMinimumSize(new Dimension(35, 15));
ScorejTextField.setPreferredSize(new Dimension(55, 20));
rankLabel.setHorizontalAlignment(SwingConstants.CENTER);
rankLabel.setText(rankLabelTxt);
rankLabel.setBorder(BorderFactory.createLineBorder(new Color(0, 0, 0)));
rankLabel.setPreferredSize(new Dimension(90, 20));
rankTextField.setEditable(false);
rankTextField.setBackground(new Color(255,255,0));
rankTextField.setHorizontalAlignment(JTextField.CENTER);
rankTextField.setText(rankText);
rankTextField.setBorder(BorderFactory.createLineBorder(new Color(0, 0, 0)));
rankTextField.setPreferredSize(new Dimension(55, 20));
thePanel.add(scorejLabel);
thePanel.add(ScorejTextField);
thePanel.add(rankLabel);
thePanel.add(rankTextField);
this.add(thePanel);
}
}
Edited by: 799076 on Oct 1, 2010 8:50 AM
Edited by: 799076 on Oct 2, 2010 3:59 AM - added the code tags.
Edited by: 799076 on Oct 2, 2010 4:01 AM
OK, here's my "simple" example Say you have a class, TablePanel, that extends from JPanel that holds a JTable and this table contains two columns of integers in a DefaultTableModel and you want to get and display the sum of the columns of numbers whenever they are changed:
class TablePanel extends JPanel {
public static final String[] COL_HEADERS = {"A", "B"};
private static final Integer[][] DATA = {{1, 2}, {3, 4}, {5, 6}};
private DefaultTableModel model = new DefaultTableModel(DATA, COL_HEADERS) {
@Override
public Class getColumnClass(int columnIndex) {
return Integer.class;
}
};
public TablePanel() {
JTable table = new JTable(model);
setLayout(new BorderLayout());
add(new JScrollPane(table));
}
//....
A way to listen for changes to the table is to provide a method that allows outside classes to add a TableModelListener your JTable model:
public void addTableModelListener(TableModelListener listener) {
model.addTableModelListener(listener);
}
You could also give him public methods to enable this class get the money and return:
public int getSumA() {
int sum = 0;
for (int i = 0; i < model.getRowCount(); i++) {
sum += (Integer) model.getValueAt(i, 0);
}
return sum;
}
public int getSumB() {
int sum = 0;
for (int i = 0; i < model.getRowCount(); i++) {
sum += (Integer) model.getValueAt(i, 1);
}
return sum;
}
}
While you have another class, SumPanel, that displays two JLabels, one to hold the sum of column A and one for the sum of column B:
class SumPanel extends JPanel {
private JLabel sumA = new JLabel(" ", SwingConstants.RIGHT);
private JLabel sumB = new JLabel(" ", SwingConstants.RIGHT);
public SumPanel() {
setLayout(new GridLayout(1, 0));
add(sumA);
add(sumB);
//....
}
//.....
You'd give public methods to allow outside classes to set the text for the JLabels that class:
public void setTextSumA(String text) {
sumA.setText(text);
}
public void setTextSumB(String text) {
sumB.setText(text);
}
Then, you might have your own class TableModelListener, ModelListener, which has references to both of the above classes:
class ModelListener implements TableModelListener {
private TablePanel tablePanel;
private SumPanel sumPanel;
public ModelListener(TablePanel tablePanel, SumPanel sumPanel) {
this.tablePanel = tablePanel;
this.sumPanel = sumPanel;
//...
}
//....
who will set the SumPanel labels whenever its tableChanged method is called by the model:
@Override
public void tableChanged(TableModelEvent e) {
int sumA = tablePanel.getSumA();
int sumB = tablePanel.getSumB();
sumPanel.setTextSumA(String.valueOf(sumA));
sumPanel.setTextSumB(String.valueOf(sumB));
}
}
Then you can link everything together in your main graphical interface as follows:
TablePanel tablePanel = new TablePanel();
SumPanel sumPanel = new SumPanel();
ModelListener myModelListener = new ModelListener(tablePanel, sumPanel);
tablePanel.addTableModelListener(myModelListener);
All assembled, it could look as follows:
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.DefaultTableModel;
public class TableAndPanel2 {
private static void createAndShowUI() {
TablePanel tablePanel = new TablePanel();
SumPanel sumPanel = new SumPanel();
ModelListener myModelListener = new ModelListener(tablePanel, sumPanel);
tablePanel.addTableModelListener(myModelListener);
JFrame frame = new JFrame("Table And Panel 2");
frame.getContentPane().add(tablePanel, BorderLayout.CENTER);
frame.getContentPane().add(sumPanel, BorderLayout.PAGE_END);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
createAndShowUI();
}
});
}
}
class TablePanel extends JPanel {
public static final String[] COL_HEADERS = {"A", "B"};
private static final Integer[][] DATA = {{1, 2}, {3, 4}, {5, 6}};
private DefaultTableModel model = new DefaultTableModel(DATA, COL_HEADERS) {
@Override
public Class getColumnClass(int columnIndex) {
return Integer.class;
}
};
public TablePanel() {
JTable table = new JTable(model);
setLayout(new BorderLayout());
add(new JScrollPane(table));
}
public void addTableModelListener(TableModelListener listener) {
model.addTableModelListener(listener);
}
public int getSumA() {
int sum = 0;
for (int i = 0; i < model.getRowCount(); i++) {
sum += (Integer) model.getValueAt(i, 0);
}
return sum;
}
public int getSumB() {
int sum = 0;
for (int i = 0; i < model.getRowCount(); i++) {
sum += (Integer) model.getValueAt(i, 1);
}
return sum;
}
}
class SumPanel extends JPanel {
private JLabel sumA = new JLabel(" ", SwingConstants.RIGHT);
private JLabel sumB = new JLabel(" ", SwingConstants.RIGHT);
public SumPanel() {
setLayout(new GridLayout(1, 0));
add(sumA);
add(sumB);
sumA.setBorder(BorderFactory.createLineBorder(Color.black));
sumB.setBorder(BorderFactory.createLineBorder(Color.black));
}
public void setTextSumA(String text) {
sumA.setText(text);
}
public void setTextSumB(String text) {
sumB.setText(text);
}
}
class ModelListener implements TableModelListener {
private TablePanel tablePanel;
private SumPanel sumPanel;
public ModelListener(TablePanel tablePanel, SumPanel sumPanel) {
this.tablePanel = tablePanel;
this.sumPanel = sumPanel;
tableChanged(null);
}
@Override
public void tableChanged(TableModelEvent e) {
int sumA = tablePanel.getSumA();
int sumB = tablePanel.getSumB();
sumPanel.setTextSumA(String.valueOf(sumA));
sumPanel.setTextSumB(String.valueOf(sumB));
}
}
Tags: Java
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After passing parameter to other forms, how do you get the value?
Hello
I had created a parameter and Federal Archives. I added the record group in the Data_Parameter parameter and use the Call_Form to open another form and pass it
pd_id with her.
Some code this that look like this
DECLARE
pl_id ParamList;
pl_name VARCHAR2 (10): = "Bank_Param";
rg_name VARCHAR2 (40): = "Bank_RecGrp";
RG_ID RecordGroup;
ERRCODE NUMBER;
BEGIN
pl_id: = Get_Parameter_List (pl_name);
IF Id_Null (pl_id) THEN
pl_id: = Create_Parameter_List (pl_name);
RG_ID: = Find_Group (rg_name);
IF Id_Null (rg_id) THEN
RG_ID: = Create_Group_From_Query (rg_name,
"SELECT CODE, BANK CODE".
||' ORDER BY 1');
END IF;
Errcode: = Populate_Group (rg_id);
Add_Parameter (pl_id, 'bank_query', DATA_PARAMETER, rg_name);
CALL_FORM (BankForm, Hide, no_replace, no_query_only, pl_id);
ON THE OTHER
Message ("list of parameters ' |") pl_name | "exist already!");
RAISE Form_Trigger_Failure;
END IF;
END;
I want to get the parameter after the other open form and using the record group insert in one of the combobox that is in one of the Databock.
When_New_Form_Instance trigger level both on the form
DECLARE
pl_id ParamList;
pl_name VARCHAR2 (10): = "Bank_Param";
list_id Item: = Find_Item("Block_Name.Item_Name');
BEGIN
pl_id: = Get_Parameter_List (pl_name);
IF (pl_id) Id_Null is FALSE
POPULATE_LIST (list_id, pl_id);
END IF;
END;
I don't know is this correct?
Thank you if someone could help me with that.
Joel Andreas,
You can actually spend a DATA_PARAMETER, but in all honesty, I've never used I always comes to pass a text parameter. There are examples in the forms help (which I believe is where the OP got their original code) show that passing a DATA_PARAMETER, but I could not find any examples of how to work with the DATA_PARAMETER in the form of receiver.
Craig...
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