java调试问题，请帮忙__java_Shapes2_symbol_location_class_

当前位置: 技术问答>java相关

java调试问题，请帮忙

来源: 互联网发布时间：2015-10-20

本文导语: 小弟在编译java程序是出现一下问题。我用的是jdk1.4.0版，肯定配置好了，因为我得“helloworld"已经运行成功。请大家多多帮忙，谢谢。编译问题和程序见下： E:>javac Shapes2.java Shapes2.java:17: cannot resolve symbol symbol :...

小弟在编译java程序是出现一下问题。我用的是jdk1.4.0版，肯定配置好了，因为我得“helloworld"已经运行成功。请大家多多帮忙，谢谢。编译问题和程序见下：

E:>javac Shapes2.java
Shapes2.java:17: cannot resolve symbol
symbol  : class Generalpath
location: class Shapes2
                 GeneralPath star=new Generalpath();
                                      ^
Shapes2.java:20: cannot resolve symbol
symbol  : method lineto  (int,int)
location: class java.awt.geom.GeneralPath
                         star.lineto(xPoints[k],yPoints[k]);
                             ^
Shapes2.java:25: cannot resolve symbol
symbol  : method rotate  (double)
location: class java.awt.Graphics
                        {g2d.rotate(Math.PI/10.0);
                            ^
Shapes2.java:26: cannot resolve symbol
symbol  : method setcolor  (java.awt.Color)
location: class java.awt.Graphics
                         g2d.setcolor(
                            ^
Shapes2.java:30: cannot resolve symbol
symbol  : method fill  (java.awt.geom.GeneralPath)
location: class java.awt.Graphics
                         g2d.fill(star);
                            ^
Shapes2.java:35: cannot resolve symbol
symbol  : method paint  ()
location: class Shapes2
        app.paint();
           ^
Shapes2.java:36: cannot resolve symbol
symbol  : method addWindowlistener  ()
location: class Shapes2
        app.addWindowlistener(
           ^
7 errors

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.awt.geom.GeneralPath;
public class Shapes2 extends JFrame{
public Shapes2()
{super ("drawing 2d shapes");
setBackground(Color.yellow);
setSize(400,400);
show();
}
        public void paint(Graphics g)
{int xPoints[]={55,67,109,73,83,55,27,37,1,43};
int yPoints[]={0,36,36,54,96,72,96,54,36,36};
Graphics g2d =(Graphics2D) g;
GeneralPath star=new Generalpath();
star.moveTo(xPoints[0],yPoints[0]);
for(int k=1;k