looping around a table renderer, is it possible?

i am trying to get rows to change colours, red, green or white. Depending on whether the value in the cells has increased or decreased etc.

I have it on a loop that currently prints out the previous, current value, and if its increased or not. As it stands i just have a value inserting into a cell but not updating a colour.

the code i have for the timer and method that updates the cell and compares values is...

Code:

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private void updateStockPrices() {

        for (int i = 0; i < stockBeans.size(); i++) {

            Object obj1 = getData(jTable, i, 1);
            String obj2 = obj1.toString();
            float newVal = Float.parseFloat(obj2);

            StockBean currentBean = stockBeans.get(i);
            final StockBean currentStockBean = stockTickerDAO.refreshStockInfo(currentBean);
            System.out.println(currentStockBean.symbol);
            tableModel.setValueAt(currentStockBean.symbol, i, 0);
            tableModel.setValueAt(currentStockBean.price, i, 1);
            tableModel.setValueAt(currentStockBean.change, i, 2);

            float stock = currentStockBean.price;

            System.out.println("Comparing " + stock + " and " + newVal);
         
            if (stock > newVal) setData("INCREASE", i, 3);
            if (stock < newVal) setData("DECREASE", i, 3);
            if (stock == newVal)setData("NO CHANGE", i, 3);
           
        }
    }

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The table renderer code is..

Code:

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  JeksTable jTable = new JeksTable(tableModel){

        public Component prepareRenderer
                  (TableCellRenderer renderer,int Index_row, int Index_col) {
        Component comp = super.prepareRenderer(renderer, Index_row, Index_col);

        if (Index_row % 1 == 0 && isCellSelected(Index_row, Index_col)) {
          comp.setBackground(Color.LIGHT_GRAY);
        }
        else {
          comp.setBackground(Color.white);
        }
        return comp;
      }
  }

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Can i have 3 different renderers and call the appropriate one each time the above if statements are run?

or does anyone have a more simple solution?

Thanks

1. By convention, Java variable names (that includes method and constructor parameters) start with a lowercase letter. More on
Code Conventions for the Java(TM) Programming Language: Contents

2. Do you know what the modulo operator % does? What's the remainder when you divide an int by 1?

3. We have no idea of the functionality of the class JeksTable.

Quote:

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Can i have 3 different renderers and call the appropriate one each time the above if statements are run?

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You don't *call* a renderer. You can set different renderers to different columns, and you can return different components from the getTableCellRendererComponent(...) method.

To get better help sooner, post a SSCCE (Short, Self Contained, Compilable and Executable) example that demonstrates the problem.

db