求助关于java程序的一个小错误！哪位大哥帮帮忙

oyp254710980 2007-09-03 10:09:42

程序有一个错误：-配置: <--------------------
E:\JAVA临时文件\c11-10.java:5: 类 c11_10 是公共的，应在名为 c11_10.java 的文件中声明
public class c11_10 implements AdjustmentListener
^
1 错误

处理已完成。

到底哪里出了问题？

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

public class c11_10 implements AdjustmentListener
{
int r=0,g=0,b=0;
String s,s1=" ",s2=" ",s3=" ";
JScrollBar sbr,sbg,sbb;
JPanel pa1,pa2,pa3;
JLabel lb1=new JLabel("刻度: "),
lb2=new JLabel(" 标签 "),
lb3=new JLabel(" 调色板 "),
lbr=new JLabel("红色"),
lbg=new JLabel("绿色"),
lbb=new JLabel("蓝色");
public c11_10()
{
JFrame f=new JFrame("JScrollBar");
Container cp=f.getContentPane();
Box baseBox=Box.createVerticalBox();
cp.add(baseBox);
Box box1=Box.createHorizontalBox();
box1.add(lb1);
box1.add(lb2);
baseBox.add(box1);
Box box3=Box.createVerticalBox();
baseBox.add(box3);
lb3.setBackground(new Color(0,0,0));
lb3.setBorder(BorderFactory.createEtchedBorder());
lb3.setOpaque(true);
lb3.setMaximumSize(new Dimension(450,200));
box3.add(lb3);
sbr=new JScrollBar(JScrollBar.HORIZONTAL,10,10,0,260);
sbr.setUnitIncrement(5);
sbr.setBlockIncrement(10);
sbr.addAdjustmentListener(this);
box3.add(lbr);box3.add(sbr);
sbg=new JScrollBar(JScrollBar.HORIZONTAL,10,10,0,260);
sbg.setUnitIncrement(5);
sbg.setBlockIncrement(10);
sbg.addAdjustmentListener(this);
box3.add(lbg);box3.add(sbg);

sbb=new JScrollBar(JScrollBar.HORIZONTAL,10,10,0,260);
sbb.setUnitIncrement(5);
sbb.setBlockIncrement(10);
sbb.addAdjustmentListener(this);
box3.add(lbb);box3.add(sbb);

f.pack();
f.setVisible(true);
f.addWindowListener(new WinLis());

}

class WinLis extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}

public void adjustmentValueChanged(AdjustmentEvent e)
{
if((JScrollBar)e.getSource()==sbr)
{
r=e.getValue();s1="red: ";
}
if((JScrollBar)e.getSource()==sbg)
{
g=e.getValue();s2="green: ";
}
if((JScrollBar)e.getSource()==sbb)
{
b=e.getValue();s3="blue: ";
}
s=s1+r+" "+s2+g+" "+s3+b;
lb2.setText(s);
lb3.setBackground(new Color(r,g,b));
}
public static void main(String[] arg)
{
new c11_10();
}

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