progressbarevents.java

来自「由于想一次上传成功 所以将二个教程打包成了一个 这些例子几乎包含了所有java的」· Java 代码 · 共 48 行

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

/*
<APPLET
    CODE = progressbarevents.class
    WIDTH = 400
    HEIGHT = 200 >
</APPLET>
*/

public class progressbarevents extends JApplet 
{
    JProgressBar jprogressbar = new JProgressBar();
    JButton jbutton = new JButton("Increment the progress bar");

    public void init() 
    {
        Container contentPane = getContentPane();

        contentPane.setLayout(new FlowLayout());

        contentPane.add(jbutton);

        jprogressbar.setForeground(Color.blue);
        contentPane.add(jprogressbar);

        jbutton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) 
            {
                jprogressbar.setValue(jprogressbar.getValue() + 10);
            }
        });

        jprogressbar.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent e) 
            {
                showStatus("Progress bar mininum: " + jprogressbar.getMinimum() + 
                    " maximum: " + jprogressbar.getMaximum() +
                    " value: " + jprogressbar.getValue());
            }
        });
    }
}