从BoundedRangeModel获得价值 : 变化事件监听 « Swing事件 « Java 教程

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Java
Java 教程 » Swing事件 » 变化事件监听 
15. 9. 6. 从BoundedRangeModel获得价值
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.BoundedRangeModel;
import javax.swing.JFrame;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Main extends JFrame {
  JSlider slider = new JSlider();
  BoundedRangeModel model = slider.getModel();

  public Main() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    getContentPane().add(slider, BorderLayout.CENTER);

    model.addChangeListener(new ChangeListener() {
      public void stateChanged(ChangeEvent e) {
        System.out.println("Value: " + model.getValue());
      }
    });
    pack();
    setVisible(true);
  }

  public static void main(String arg[]) {
    new Main();
  }
}
15. 9. 变化事件监听
15. 9. 1. Listening to JMenu Events with a ChangeListener: register a ChangeListener with a JMenuListening to JMenu Events with a ChangeListener: register a ChangeListener with a JMenu
15. 9. 2. Registers a change listener on a slider that controls animation speed. The change listener ignores the change events until the user releases the slider.Registers a change listener on a slider that controls animation speed. The change listener ignores the change events until the user releases the slider.
15. 9. 3. Uses a change listener on the selection model of a color chooser to learn when the user changes the current color.Uses a change listener on the selection model of a color chooser to learn when the user changes the current color.
15. 9. 4. Uses a change listener on a date-field spinner to change the color of the text as the spinner's date changes.Uses a change listener on a date-field spinner to change the color of the text as the spinner's date changes.
15. 9. 5. 标签更改监听
15. 9. 6. 从BoundedRangeModel获得价值
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