java绘制一个成交量的统计图

　　在前面,我用多线程写了一个绘制了股票K线图的程序.这里我再通过绘制一个成交量的统计图说明对鼠票事件的应用.这里我们要传入几个参数:
<applet code="sellhis.class" Archive="sellhis.jar" width="640" height="400">
<Param name="itemmonth" value="200201">
<Param name="itemcode" value="00002,00014,00019,00023,00041,00102,00113,00114,
00129,00132,00142,00146,00179,00203,00213,00223,00341">
<Param name="itemval" value="272950,193950,1015600,142700,1618500,671650,
2453300,630150,28375,1827660,7700,75700,27375,3375600,47500,17500,17500">
<Param name="itempce" value="219,156,817,114,2302,540,1974,507,22,
1471,6,60,22,4717,38,114,14">
</applet>
查看演示
sellhis.java源程序如下:
import java.awt.*;
import java.applet.*;
import java.awt.font.*;
import java.awt.event.*;
import java.io.*;
import java.lang.*;
import java.util.*;



public class sellhis extends Applet{
  static int Len;
  int leftMargine=50;
  int rightMargine=20;
  int topMargine=80;
  int buttomMargine=20;
  int width,height,w,h;
  int minStickLength=3;  //坐标的短刻度
  int majStickLength=8;   //坐标的长刻度
  int minStick=10;
  int majStick;
  String title;
  String xTitle="股票代碼";
  String xCode;
  float yData,xPce;
  String MaxPce;
  boolean Mouse_Move;
  int x0,y0,X,Y,hx,hy;
  Label label=new Label;
  boolean mouse_move=false;
  public void init() {
    width=this.getBounds().width;
    height=this.getBounds().height;
    w=width-leftMargine-rightMargine;
    h=height-topMargine-buttomMargine;
    setSize(width,height);
    Color bc=new Color(229,229,229);
    setBackground(bc);
    setLayout(null);
    for(int I=0;I<3;I++){
      label[I]=new Label();
      label[I].setForeground(Color.blue);
      this.add(label[I]);
      if(I==0)
        label[I].reshape(75,topMargine-25,60,15);
      if(I==1)
        label[I].reshape(230,topMargine-25,80,15);
      if(I==2)
        label[I].reshape(505,topMargine-25,60,15);
    }
    try{
      title=getTitle(getParameter("itemmonth"));
    }
    catch(Exception e){
      System.out.println