package GUI;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class MyMouseAdapter {
public static void main(String[] args) {
new MyFrame(" hua yuan ");
}
}
class MyFrame extends Frame {
ArrayList points = null;
MyFrame(String s) {
super(s);
points = new ArrayList();
setLayout(null);
setVisible(true);
this.setBackground(new Color(200,200,200));
this.addMouseListener(new Mointor());
}
public void paint(Graphics g) {
Iterator i = points.iterator();
while (i.hasNext()) {
Point p = (Point)i.next();
g.setColor(Color.BLUE);
g.fillOval(p.x, p.y, 10, 10);
}
}
public void addPoint(Point p) {
points.add(p);
}
}
class Mointor extends MouseAdapter {
public void mousePressed(MouseEvent e) {
MyFrame f =(MyFrame)e.getSource();
f.addPoint(new Point(e.getX(),e.getY()));
f.repaint();
}
}编译可以通过,运行出现没有找到类定义的错误,环境变量绝对没有问题!不知道是什么原因!望高手指教
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class MyMouseAdapter {
public static void main(String[] args) {
new MyFrame(" hua yuan ");
}
}
class MyFrame extends Frame {
ArrayList points = null;
MyFrame(String s) {
super(s);
points = new ArrayList();
setLayout(null);
setVisible(true);
this.setBackground(new Color(200,200,200));
this.addMouseListener(new Mointor());
}
public void paint(Graphics g) {
Iterator i = points.iterator();
while (i.hasNext()) {
Point p = (Point)i.next();
g.setColor(Color.BLUE);
g.fillOval(p.x, p.y, 10, 10);
}
}
public void addPoint(Point p) {
points.add(p);
}
}
class Mointor extends MouseAdapter {
public void mousePressed(MouseEvent e) {
MyFrame f =(MyFrame)e.getSource();
f.addPoint(new Point(e.getX(),e.getY()));
f.repaint();
}
}编译可以通过,运行出现没有找到类定义的错误,环境变量绝对没有问题!不知道是什么原因!望高手指教
应该是你的开发工具JDK配置或工程属性配置有问题
仔细检查你的eclipse配置
要全路径 java package.classname 才能用 否则找不到