Search row in Jtable

I have a Jtable with four columns.
When the user click on a button I have to add a new row to the Jtable but first i have to search if the first three cells of the new row are in the jtable.
How can I do that whithout a for....

I have a Jtable with four columns.
When the user click on a button I have to add a new
row to the Jtable but first i have to search if the
first three cells of the new row are in the jtable.
How can I do that whithout a for....Use a "for".
Servus.

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Look at some of these they may help.
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Try to use the Table Model.
The "getValueAt" Methode decide what to Display.
So a simple "if" command can hide the complete row - or a single Statement.
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ArrayList al = new ArrayList();
StueliTeil tabellenzeile = (StueliTeil) getDaten().get(row);
switch (col) {
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i need to inserting row in JTable in runtime so tell me what it do

dear farhanaj ,
try this code:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.table.*;
/* <applet code=tableadd.class width=200 height=200>
</applet>
public class tableadd extends JApplet implements ActionListener
Object[] data = new Object[5];
DefaultTableModel defaulttablemodel = new DefaultTableModel();
JTable jtable=new JTable(defaulttablemodel);
JPanel jpanel= new JPanel();
private     JPanel          topPanel,jpPanel;
public     JTable          table;
JButton jbutton1 = new JButton("create new row");
JButton jbutton2 = new JButton("create new col");
//JButton jbutton1=new Jbutton("r"),jbutton2=new Jbutton("c");
public tableadd()
for(int column=0 ; column<5 ; column++)
defaulttablemodel.addColumn("column" + column);
for(int row=0 ; row<5;row++)
for(int column=0 ;column<5;column++)
data[column]="cell" row "," + column;
defaulttablemodel.addRow(data);
//getContentPane().add(new JScrollPane(jtable) ,BorderLayout.CENTER);
//getContentPane().add(new JPanel() ,BorderLayout.SOUTH);
int v=ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
int h=ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
JScrollPane jsp = new JScrollPane(jtable , v, h);
getContentPane().add(jsp, BorderLayout.CENTER);
topPanel = new JPanel();
jpPanel=new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add(topPanel,BorderLayout.NORTH);
getContentPane().add(jpPanel,BorderLayout.SOUTH);
jpPanel.add(jbutton1);
jpPanel.add(jbutton2);
jbutton1.addActionListener(this);
jbutton2.addActionListener(this);
public void actionPerformed(ActionEvent e)
if (e.getSource() == jbutton1)
int numberrows = defaulttablemodel.getRowCount();
int numbercolumns=defaulttablemodel.getColumnCount();
Object[] data = new Object[numbercolumns];
for(int column=0 ; column<numbercolumns;column++)
data[column]="cell" numberrows "," +column;
defaulttablemodel.addRow(data);
else
if (e.getSource() ==jbutton2)
int numberrows=defaulttablemodel.getRowCount();
int numbercolumns=defaulttablemodel.getColumnCount();
defaulttablemodel.addColumn("column" + numbercolumns);
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[http://java.sun.com/docs/books/tutorial/uiswing/components/table.html]
db

How to select a row in Jtable at runtime

how to select a row in Jtable at runtime.

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How to remove a row from JTable

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you'll find the answer at http://www2.gol.com/users/tame/swing/examples/SwingExamples.html

Delete row in JTable

Hello I am new To JAVA SWING
I have 2 questions related to JTable
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deibys

1) use the removeRow(...) method of the DefaultTableModel
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Problem in adding/deleting rows in JTable

I am trying to add /remove rows from JTable whose first column is JButton and others are JComboBox's.If no rows are selected,new row is added at the end.If user selects some row & then presses insert button,new row is added below it.Rows can only be deleted if user has made some selection.Kindly help me,where i am making mistake.If any function is to be used.My code is as follows....
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;
public class JButtonTableExample extends JFrame implements ActionListener{
JComboBox mComboLHSType = new JComboBox();
JComboBox mComboRHSType = new JComboBox();
JLabel mLabelLHSType = new JLabel("LHS Type");
JLabel mLabelRHSType = new JLabel("RHS Type");
JButton mButtonDelete = new JButton("Delete");
JButton mButtonInsert = new JButton("Insert");
JPanel mPanelButton = new JPanel();
JPanel mPanelScroll = new JPanel();
JPanel mPanelCombo = new JPanel();
DefaultTableModel dm ;
JTable table;
int currentRow = -1;
static int mSelectedRow = -1;
public JButtonTableExample()
super( "JButtonTable Example" );
makeForm();
setSize( 410, 222 );
setVisible(true);
private void makeForm()
this.getContentPane().setLayout(null);
mPanelCombo.setLayout(null);
mPanelCombo.setBorder(new LineBorder(Color.red));
mPanelCombo.setBounds(new Rectangle(1,1,400,30));
mLabelLHSType.setBounds(new Rectangle(26,5,71,22));
mComboLHSType.setBounds(new Rectangle(83,5,100,22));
mLabelRHSType.setBounds(new Rectangle(232,5,71,22));
mComboRHSType.setBounds(new Rectangle(292,5,100,22));
mPanelCombo.add(mLabelLHSType,null);
mPanelCombo.add(mComboLHSType,null);
mPanelCombo.add(mLabelRHSType,null);
mPanelCombo.add(mComboRHSType,null);
mPanelScroll.setLayout(null);
mPanelScroll.setBorder(new LineBorder(Color.blue));
mPanelScroll.setBounds(new Rectangle(1,28,400,135));
mPanelButton.setLayout(null);
mPanelButton.setBorder(new LineBorder(Color.green));
mPanelButton.setBounds(new Rectangle(1,165,400,30));
mButtonInsert.setBounds(new Rectangle(120,5,71,22));
mButtonDelete.setBounds(new Rectangle(202,5,71,22));
mButtonDelete.addActionListener(this);
mButtonInsert.addActionListener(this);
mPanelButton.add(mButtonDelete,null);
mPanelButton.add(mButtonInsert,null);
dm = new DefaultTableModel();
//dm.setDataVector(null,
//new Object[]{"Button","Join","LHS","Operator","RHS"});
dm.setDataVector(new Object[][]{{"","","","",""}},
new Object[]{"","Join","LHS","Operator","RHS"});
table = new JTable(dm);
table.getTableHeader().setReorderingAllowed(false);
table.setRowHeight(25);
int columnWidth[] = {20,45,95,95,95};
TableColumnModel modelCol = table.getColumnModel();
for (int i=0;i<5;i++)
modelCol.getColumn(i).setPreferredWidth(columnWidth);
//modelCol.getColumn(0).setCellRenderer(new ButtonRenderer());
//modelCol.getColumn(0).setCellEditor(new ButtonEditor(new JCheckBox()));
modelCol.getColumn(0).setCellRenderer(new ButtonCR());
modelCol.getColumn(0).setCellEditor(new ButtonCE(new JCheckBox()));
modelCol.getColumn(0).setResizable(false);
setUpJoinColumn(modelCol.getColumn(1));
setUpLHSColumn(modelCol.getColumn(2));
setUpOperColumn(modelCol.getColumn(3));
setUpRHSColumn(modelCol.getColumn(4));
JScrollPane scroll = new JScrollPane(table);
scroll.setBounds(new Rectangle(1,1,400,133));
mPanelScroll.add(scroll,null);
this.getContentPane().add(mPanelCombo,null);
this.getContentPane().add(mPanelScroll,null);
this.getContentPane().add(mPanelButton,null);
}//end of makeForm()
public void actionPerformed(ActionEvent ae)
if (ae.getSource() == mButtonInsert)
//int currentRow = table.getSelectedRow();
currentRow = ButtonCE.selectedRow;
System.out.println("Before Insert CURRENT ROW"+currentRow);
if(currentRow == -1)
int rowCount = dm.getRowCount();
//mSelectedRow = rowCount-1;
//table.clearSelection();
dm.insertRow(rowCount,new Object[]{"","","","",""});
currentRow = -1;
ButtonCE.selectedRow = -1;
else
table.clearSelection();
dm.insertRow(currentRow+1,new Object[]{"","","","",""});
currentRow = -1;
ButtonCE.selectedRow = -1;
//System.out.println("After INSERT CURRENT ROW"+currentRow);
if(ae.getSource() == mButtonDelete)
//int currentRow = table.getSelectedRow();
currentRow = ButtonCE.selectedRow;
System.out.println("Before DELETE CURRENT ROW"+currentRow);
if(currentRow != -1)
dm.removeRow(currentRow);
table.clearSelection();
currentRow = -1;
ButtonCE.selectedRow = -1;
//System.out.println("Selected Row"+mSelectedRow);
else
JOptionPane.showMessageDialog(null, "Select row first", "alert", JOptionPane.ERROR_MESSAGE);
//System.out.println("DELETE CURRENT ROW"+currentRow);
public void setUpJoinColumn(TableColumn joinColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("AND");
comboBox.addItem("OR");
comboBox.addItem("NOT");
joinColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
joinColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = joinColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpLHSColumn(TableColumn LHSColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Participant1");
comboBox.addItem("Participant2");
comboBox.addItem("Variable1");
LHSColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
LHSColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = LHSColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpOperColumn(TableColumn operColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("=");
comboBox.addItem("!=");
comboBox.addItem("Contains");
operColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
operColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = operColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpRHSColumn(TableColumn rhsColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Variable1");
comboBox.addItem("Constant1");
comboBox.addItem("Constant2");
rhsColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
rhsColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = rhsColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public static void main(String[] args) {
JButtonTableExample frame = new JButtonTableExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
//Button as a renderer for the table cells
class ButtonCR implements TableCellRenderer
JButton btnSelect;
public ButtonCR()
btnSelect = new JButton();
btnSelect.setMargin(new Insets(0,0,0,0));
public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column)
if (column != 0) return null; //meany !!!
//System.out.println("Inside renderer########################Selected row");
//btnSelect.setText(value.toString());
//btnSelect.setIcon(new ImageIcon("capsigma.gif"));
return btnSelect;
}//end fo ButtonCR
//Default Editor for table
class ButtonCE extends DefaultCellEditor implements ActionListener
JButton btnSelect;
JTable table;
//Object val;
static int selectedRow = -1;
public ButtonCE(JCheckBox whoCares)
super(whoCares);
//this.row = row;
btnSelect = new JButton();
btnSelect.setMargin(new Insets(0,0,0,0));
btnSelect.addActionListener(this);
setClickCountToStart(1);
public Component getTableCellEditorComponent(JTable table,Object value,boolean isSelected,int row,int column)
if (column != 0) return null; //meany !!!
this.selectedRow = row;
this.table = table;
table.clearSelection();
System.out.println("Inside getTableCellEditorComponent");
return btnSelect;
//public Object getCellEditorValue()
//return val;
public void actionPerformed(ActionEvent e)
// Your Code Here...
System.out.println("Inside actionPerformed");
System.out.println("Action performed Row selected "+selectedRow);
btnSelect.setIcon(new ImageIcon("capsigma.gif"));
}//end of ButtonCE

Hi,
All the thing you have to do is to return a boolean for the column. JTable will use a checkbox (as default) to show boolean values.

Hide row in Jtable

Please I need help
How can I hide a row in Jtable.
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Thanks

One simple way you can do is:
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Selecting Row in JTable

Dear friends,
When i select a whole row in JTable it gets selected but the background color of the row selected does not change. i.e. Its not highlighted as in MS-Excel.
How can i overcome this problem?
Kindly reply
Thanks.

Hi,
Thanx for ur inputs. This is what the code i wrote. When u run this code,
If we select row1 column1 the cells highlighted will be on row 2, 3 and 4. If we select row1 column 2 the selected cells will be on row 1, 3 and 4. I want the row to be selected fully when we select coumn 1 only.
For eg. if i select row 200 from column 1 the 200 th row should only be fully highlighted
Anyway i'll try the above code and check
Here is the code
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class table1 extends JFrame
     // Variables declaration
     private JTable jTable1;
     private JScrollPane jScrollPane1;
     private JPanel contentPane;
     // End of variables declaration
     public table1()
          super();
          this.setVisible(true);
     private void initializeComponent()
          jTable1 = new JTable();
          jScrollPane1 = new JScrollPane();
          contentPane = (JPanel)this.getContentPane();
          jTable1.setModel(new DefaultTableModel(4, 4));
          jScrollPane1.setViewportView(jTable1);
          contentPane.setLayout(null);
          addComponent(contentPane, jScrollPane1, 58,65,301,207);
          this.setTitle("table1 - extends JFrame");
          this.setLocation(new Point(0, 0));
          this.setSize(new Dimension(473, 539));
     private void addComponent(Container container,Component c,int x,int
y,int width,int height)
          c.setBounds(x,y,width,height);
          container.add(c);
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Query regarding updating rows in JTable

Query regarding updating rows in JTable
Hello,
I have a JTable with 6 columns and 1000s of rows (which are data read from flat files)
I can select 1 or more rows and change the values of the
columns. each time I do this I need to update the values
in the flat file.
Currently I assign the updated Jtable values to a vector
Vector rowVector = (Vector)defaultModel.getDataVector();
then I iterate over the vector and compare the values with the (old) data
in the JTable.
            for(int rowCount = 0; rowCount<rowVector.size(); rowCount++){
                Vector v = (Vector)rowVector.elementAt(rowCount);
                    //smsList is the Vector that contains the old JTable values
                    for(int i=0; i<smsList.size(); i++){
                            //If colums values have been changed; add that
                            //vector value to another vector
                            selectedsmsList.add(smsList.get(i));
            for(int i=0; i<selectedsmsList.size(); i++){
                     //Update the values in the flat file
            }This works fine except that it takes ages to iterate over the updated vecor and un-updated,old vector; is there any way to directly get the list of rows that were updated in the jtable; so that I can directly do an I/O operation to update the jtablke values?

Just a suggestion.
You could add a listener and use a vector of booleans to keep track of the rows that have been changed. You could then iterate through this boolean vector and update the changed rows.
See
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#modelchange
Don't know whether this will be helpful.
Regards, Darryl

Search row in Jtable

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