threadviewer.java

来自「Java Thread Programming (Source」· Java 代码 · 共 82 行

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

public class ThreadViewer extends JPanel {
	private ThreadViewerTableModel tableModel;

	public ThreadViewer() {
		tableModel = new ThreadViewerTableModel();

		JTable table = new JTable(tableModel);
		table.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);

		TableColumnModel colModel = table.getColumnModel();
		int numColumns = colModel.getColumnCount();

		// manually size all but the last column
		for ( int i = 0; i < numColumns - 1; i++ ) {
			TableColumn col = colModel.getColumn(i);

			col.sizeWidthToFit();
			col.setPreferredWidth(col.getWidth() + 5);
			col.setMaxWidth(col.getWidth() + 5);
		}

		JScrollPane sp = new JScrollPane(table);

		setLayout(new BorderLayout());
		add(sp, BorderLayout.CENTER);
	}

	public void dispose() {
		tableModel.stopRequest();
	}

	protected void finalize() throws Throwable {
		dispose();
	}

	public static JFrame createFramedInstance() {
		final ThreadViewer viewer = new ThreadViewer();

		final JFrame f = new JFrame("ThreadViewer");
		f.addWindowListener(new WindowAdapter() {
				public void windowClosing(WindowEvent e) {
					f.setVisible(false);
					f.dispose();
					viewer.dispose();
				}
			});

		f.setContentPane(viewer);
		f.setSize(500, 300);
		f.setVisible(true);

		return f;
	}
	
	public static void main(String[] args) {
		JFrame f = ThreadViewer.createFramedInstance();

		// For this example, exit the VM when the viewer
		// frame is closed.
		f.addWindowListener(new WindowAdapter() {
				public void windowClosing(WindowEvent e) {
					System.exit(0);
				}
			});

		// Keep the main thread from exiting by blocking
		// on wait() for a notification that never comes.
		Object lock = new Object();
		synchronized ( lock ) {
			try {
				lock.wait();
			} catch ( InterruptedException x ) {
			}
		}
	}
}