Add action listener to table cell

Question

The topic of my previous thread was:
How can I get characters, which user inputs into table cell?
I've added lisateners to table:
table.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt){
                System.out.println("keyPressed");
            public void keyReleased(java.awt.event.KeyEvent evt){
                System.out.println("keyReleased");
            public void keyTyped(java.awt.event.KeyEvent evt) {
                System.out.println("keyTyped");
        });But it's not exactly what I need.
I need to do the same, but with table cell.
I want to see user input char by char and set color font for user input string.
How can I add action listener to tble cell?

Answer 1

This is my newly created JTextField which I will use as CellEditor for My JTable
JTextField textField = new JTextField(); //creating Component
        textField.addKeyListener(new java.awt.event.KeyAdapter(){ //adding KeyListener
            public void keyReleased(java.awt.event.KeyEvent evt){
                System.out.println("keyReleased" + ((JTextField)evt.getSource()).getText() + "column = " +table.getSelectedColumn());//test functionality
                if ( isColumnHasSameValue(table.getSelectedRow(),table.getSelectedColumn(), ((JTextField)evt.getSource()).getText() ) ){//test column for equal values
                    ((JTextField)evt.getSource()).setForeground(Color.RED); //if there is equal value set Color.RED for JTextField text
                else{ //else set Color.BLACK
                    ((JTextField)evt.getSource()).setForeground(Color.BLACK);
        table.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(textField)); //set custom CellEditor
private boolean isColumnHasSameValue(int row, int column, String testVal){
        testVal = testVal.trim().toLowerCase(); //put away UpperCase and empty spaces
        for(int i=0;i<model.getRowCount();i++){
           if(i == row){
               continue;//skip selected row where user inputs text
           if(model.getValueAt(i,column).toString().trim().toLowerCase().startsWith(testVal)){
                return true; //if test passed
        return false; //if there are no mathes
    }I have a question:
It seems to me, I did not use optimal solution for JTable values testing.
What can ty else?
Maybe, It is better to use
tableModel.getDataVector();And then use Pattern and Matcher ?
Am I right?