Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Component;
import java.util.Random;

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;
    }
}