frame1.java

jbuilder2005

package scrollbartest;

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

public class Frame1
    extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  Label label1 = new Label();
    Scrollbar scrollbar1 = new Scrollbar();
  Scrollbar scrollbar2 = new Scrollbar();
  public Frame1() {
    try {
      setDefaultCloseOperation(EXIT_ON_CLOSE);
      jbInit();
    }
    catch (Exception exception) {
      exception.printStackTrace();
    }
  }

  /**
   * Component initialization.
   *
   * @throws java.lang.Exception
   */
  private void jbInit() throws Exception {
    contentPane = (JPanel) getContentPane();
    contentPane.setLayout(borderLayout1);
    setSize(new Dimension(200, 100));
    setTitle("计分器");
    label1.setAlignment(Label.CENTER);
    label1.setFont(new java.awt.Font("Dialog", Font.BOLD, 46));
    label1.setForeground(Color.red);
    label1.setText("100");
    scrollbar1.setMaximum(1000);
    scrollbar1.setUnitIncrement(10);   //单位增量
    scrollbar1.setValue(100);           //当前值
    scrollbar1.addAdjustmentListener(new Frame1_scrollbar1_adjustmentAdapter(this));
    scrollbar2.setOrientation(0);
    contentPane.add(scrollbar1, java.awt.BorderLayout.EAST);
    contentPane.add(label1, java.awt.BorderLayout.CENTER);
    contentPane.add(scrollbar2, java.awt.BorderLayout.SOUTH);
  }

  public void scrollbar1_adjustmentValueChanged(AdjustmentEvent e) {
    label1.setText(Integer.toString(scrollbar1.getValue())); //在标签上显示滚动条的当前值
  }
}

class Frame1_scrollbar1_adjustmentAdapter
    implements AdjustmentListener {
  private Frame1 adaptee;
  Frame1_scrollbar1_adjustmentAdapter(Frame1 adaptee) {
    this.adaptee = adaptee;
  }

  public void adjustmentValueChanged(AdjustmentEvent e) {
    adaptee.scrollbar1_adjustmentValueChanged(e);
  }
}