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import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class InvokeLaterDemo extends Object {
private static void print(String msg) {
String name = Thread.currentThread().getName();
System.out.println(name + ": " + msg);
}
public static void main(String[] args) {
final JLabel label = new JLabel("--------");
JPanel panel = new JPanel(new FlowLayout());
panel.add(label);
JFrame f = new JFrame();
f.setContentPane(panel);
f.setSize(300, 100);
f.setVisible(true);
try {
print("sleeping for 3 seconds");
Thread.sleep(3000);
} catch (InterruptedException ix) {
print("interrupted while sleeping");
}
print("creating code block for event thread");
Runnable setTextRun = new Runnable() {
public void run() {
try {
Thread.sleep(500);
print("about to do setText()");
label.setText("New text!");
} catch (Exception x) {
x.printStackTrace();
}
}
};
print("call invokeLater()");
SwingUtilities.invokeLater(setTextRun);
print("return from invokeLater()");
}
}
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