Java – add multiple jpprogressbars to the tablecolumn of JTable

I have added multiple jpprogressbars to the tablecolumn of JTable

After some calculations, I'm updating all jpprogressbars with data, but only the last ProgressBar (ProgressBar progressobj4 in this case) is added

How do I update all progressbars?

The basic requirement is that I display the status of the file progress bar when uploading At present, I am hard coding 4 progress bars to test whether all progress bars are updating the status of files, but I need to create them dynamically The total number of progress bars and the number of files not uploaded Also, how do I get individual instances of progress bars & update their status?

I attached the source code of the progress bar added to the table column

//tc = object of TableColumn

progressObj1 = new ProgressBarRenderer("Progress1");
progressObj1.setValue(0);
progressObj1.setStringPainted(true);
progressObj1.setBackground(Color.WHITE);
progressObj1.setBorderPainted(true);

tc.setCellRenderer(progressObj1);

progressObj2 = new ProgressBarRenderer("Progress2");
progressObj2.setValue(0);
progressObj2.setStringPainted(true);
progressObj2.setBackground(Color.WHITE);
progressObj2.setBorderPainted(true);

tc.setCellRenderer(progressObj2);

progressObj3 = new ProgressBarRenderer("Progress3");
progressObj3.setValue(0);
progressObj3.setStringPainted(true);
progressObj3.setBackground(Color.WHITE);
progressObj3.setBorderPainted(true);

tc.setCellRenderer(progressObj3);

progressObj4 = new ProgressBarRenderer("Progress4");
progressObj4.setValue(0);
progressObj4.setStringPainted(true);
progressObj4.setBackground(Color.WHITE);
progressObj4.setBorderPainted(true);

tc.setCellRenderer(progressObj4);

resolvent

Solution

Basically, there are two methods for jpprogressbar using swingworker and runnable #thread, such as swingworker

import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;

public class TableCellProgressBar {

    private String[] columnNames = {"String","ProgressBar"};
    private Object[][] data = {{"dummy",100}};
    private DefaultTableModel model = new DefaultTableModel(data,columnNames) {
        private static final long serialVersionUID = 1L;

        @Override
        public Class<?> getColumnClass(int column) {
            return getValueAt(0,column).getClass();
        }

        @Override
        public boolean isCellEditable(int row,int col) {
            return false;
        }
    };
    private JTable table = new JTable(model);

    public JComponent makeUI() {
        TableColumn column = table.getColumnModel().getColumn(1);
        column.setCellRenderer(new ProgressRenderer());
        EventQueue.invokelater(new Runnable() {

            @Override
            public void run() {
                startTask("test");
                startTask("error test");
                startTask("test");
            }
        });
        JPanel p = new JPanel(new BorderLayout());
        p.add(new JScrollPane(table));
        return p;
    }
//http://java-swing-tips.blogspot.com/2008/03/jprogressbar-in-jtable-cell.html

    private void startTask(String str) {
        final int key = model.getRowCount();
        SwingWorker<Integer,Integer> worker = new SwingWorker<Integer,Integer>() {

            private int sleepDummy = new Random().nextInt(100) + 1;
            private int lengthOfTask = 120;

            @Override
            protected Integer doInBackground() {
                int current = 0;
                while (current < lengthOfTask && !isCancelled()) {
                    if (!table.isDisplayable()) {
                        break;
                    }
                    if (key == 2 && current > 60) { //Error Test
                        cancel(true);
                        publish(-1);
                        return -1;
                    }
                    current++;
                    try {
                        Thread.sleep(sleepDummy);
                    } catch (InterruptedException ie) {
                        break;
                    }
                    publish(100 * current / lengthOfTask);
                }
                return sleepDummy * lengthOfTask;
            }

            @Override
            protected void process(java.util.List<Integer> c) {
                model.setValueAt(c.get(c.size() - 1),key,1);
            }

            @Override
            protected void done() {
                String text;
                int i = -1;
                if (isCancelled()) {
                    text = "Cancelled";
                } else {
                    try {
                        i = get();
                        text = (i >= 0) ? "Done" : "Disposed";
                    } catch (Exception ignore) {
                        ignore.printStackTrace();
                        text = ignore.getMessage();
                    }
                }
                System.out.println(key + ":" + text + "(" + i + "ms)");
            }
        };
        model.addRow(new Object[]{str,0});
        worker.execute();
    }

    public static void main(String[] args) {
        EventQueue.invokelater(new Runnable() {

            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }

    public static void createAndShowGUI() {
        JFrame frame = new JFrame();
        frame.setDefaultCloSEOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.getContentPane().add(new TableCellProgressBar().makeUI());
        frame.setSize(320,240);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

class ProgressRenderer extends DefaultTableCellRenderer {

    private final JProgressBar b = new JProgressBar(0,100);

    public ProgressRenderer() {
        super();
        setOpaque(true);
        b.setBorder(BorderFactory.createEmptyBorder(1,1,1));
    }

    @Override
    public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column) {
        Integer i = (Integer) value;
        String text = "Completed";
        if (i < 0) {
            text = "Error";
        } else if (i < 100) {
            b.setValue(i);
            return b;
        }
        super.getTableCellRendererComponent(table,text,isSelected,hasFocus,row,column);
        return this;
    }
}

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