Java的出现，给证券行业发展带来了新的机遇．这里我以java写的一个走势力图为例： package charts; import java.awt.*; import java.applet.*; import java.awt.event.*; import java.util.*; import java.lang.*; public class charts extends Applet { static int LEN; static int Xo,Yo; //坐标原点(Xo,Yo) static int X2,Y2; //X轴顶点坐标(Xo,Yo) static final int X1=50,Y1=30; //Y轴顶点坐标(Xo,Yo) static int Yunit,Xunit; static float Unit; static String Xstr,Ystr; //接收从html传进X轴Y轴的数据 static int[] Xval; static int[] Yval; static float[] Y=new float[5]; static int Xmax,Xmin; static float Ymax,Ymin; static int[] Yvalue; static int[] Xvalue; public void init() { //setBackground(Color.gray); int width=this.getBounds().width; int height=this.getBounds().height; setSize(width,height); Xstr=getParameter("xValue"); Ystr=getParameter("yValue"); Xval=Substr(Xstr); Yval=Substr(Ystr); LEN=Xval.length; Yvalue=new int[LEN]; Xvalue=new int[LEN]; Xo=50; Yo=height-30; X2=width-30; Y2=Yo; Yunit=(height-100)/4; Xunit=(width-100)/LEN; Ymax=getMaxVal(Yval); Ymin=getMinVal(Yval); float tempy=((float)Ymax-(float)Ymin)/4; Y[0]=Ymin; //Y轴坐标刻度 Y[1]=Ymin+tempy; Y[2]=Ymin+tempy*2; Y[3]=Ymin+tempy*3; Y[4]=Ymax; Unit=(float)(Yunit*4)/((float)Ymax-(float)Ymin); Yvalue=getY(Yunit,tempy,Ymin,Yval); } public static int[] getY(int unit,float diff,float ymin,int[] value){ int I=0; //unit=Yunit; diff=temp; ymin=Ymin int[] result=new int[LEN]; for(I=0;I<LEN;I++) result[I]=(int)(Yo-((4*unit)/(diff*4))*(value[I]-ymin)); return result; } public void paint(Graphics g){ g.setColor(Color.red);//坐标原点(30,290) g.drawLine(Xo,Yo,X1,Y1); //Y轴 int I; for(I=0;I<5;I++){ g.drawLine(Xo,Yo-Yunit*I,Xo-5,Yo-Yunit*I); //Y g.drawString(Float.toString(Y[I]),Xo-38,Yo-Yunit*I); } g.drawLine(X1,Y1,X1-5,Y1+5); //Y轴左箭头 g.drawLine(X1,Y1,X1+5,Y1+5); //Y轴右箭头 g.drawLine(Xo,Yo,X2,Y2); //X轴 //System.out.println(""); for(I=0;I<LEN;I++){ g.drawLine(Xo+Xunit*I,Yo,Xo+Xunit*I,Yo+5); //X //System.out.print((Xo+Xunit*I)+" "); g.drawString(Integer.toString(Xval[I]),Xo+Xunit*I-6,Yo+20); } g.drawLine(X2,Y2,X2-5,Y2-5); //X轴左箭头 g.drawLine(X2,Y2,X2-5,Y2+5); //X轴右箭头 g.setColor(Color.black); g.drawString("Y",X1-20,Y1); g.drawString("X",X2,Y2+20); for(I=0;I<LEN-1;I++) g.drawLine(Xo+Xunit*I,Yvalue[I],Xo+Xunit*(I+1),Yvalue[I+1]); } public static int[] Substr(String str){ int I=0; StringTokenizer st = new StringTokenizer(str,","); int len=st.countTokens(); int[] val=new int[len]; while(st.hasMoreTokens()) { val[I]=Integer.parseInt(st.nextToken()); I++; } return val; } public static int getMaxVal(int[] Maxval){ int I,result; result=Maxval[0]; for(I=0;I<Maxval.length;I++){ if(result<Maxval[I]) result=Maxval[I]; } return result; } public static int getMinVal(int[] Minval){ int I,result; result=Minval[0]; for(I=0;I<Minval.length;I++){ if(result>Minval[I]) result=Minval[I]; } return result; } }