Java Swing How to - Put JProgressBar in JTable

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Question

We would like to know how to put JProgressBar in JTable.

Answer

import java.awt.Component;
import java.util.Random;
/*w  w  w  . j  a  v a2s  .c  o  m*/
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;

public class Main {
  public static void main(String[] args) {
    int maximum = 100;
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Integer[] oneRow = { 0, 0, 0, 0 };
    String[] headers = { "A", "B", "C", "D" };
    Integer[][] data = { oneRow, oneRow, oneRow, oneRow, oneRow, };
    DefaultTableModel model = new DefaultTableModel(data, headers);
    JTable table = new JTable(model);
    table.setDefaultRenderer(Object.class, new ProgressRenderer(0, maximum));
    table.setPreferredScrollableViewportSize(table.getPreferredSize());
    frame.add(new JScrollPane(table));
    frame.pack();
    frame.setVisible(true);
    new Thread(new Runnable() {
      @Override
      public void run() {
        Object waiter = new Object();
        synchronized (waiter) {
          int rows = model.getRowCount();
          int columns = model.getColumnCount();
          Random random = new Random(System.currentTimeMillis());
          boolean done = false;
          while (!done) {
            int row = random.nextInt(rows);
            int column = random.nextInt(columns);
            Integer value = (Integer) model.getValueAt(row, column);
            value++;
            if (value <= maximum) {
              model.setValueAt(value, row, column);
              try {
                waiter.wait(15);
              } catch (InterruptedException e) {
                e.printStackTrace();
              }
            }
            done = true;
            for (row = 0; row < rows; row++) {
              for (column = 0; column < columns; column++) {
                if (!model.getValueAt(row, column).equals(maximum)) {
                  done = false;
                  break;
                }
              }
              if (!done) {
                break;
              }
            }
          }
        }
      }
    }).start();
  }
}

class ProgressRenderer extends JProgressBar implements TableCellRenderer {
  public ProgressRenderer(int min, int max) {
    super(min, max);
    this.setStringPainted(true);
  }

  @Override
  public Component getTableCellRendererComponent(JTable table, Object value,
      boolean isSelected, boolean hasFocus, int row, int column) {
    this.setValue((Integer) value);
    return this;
  }
}

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