什么是事件? 用户用于交互而产生的键盘或鼠标动作.下面是鼠標事件實例:
import java.awt.*;
import java.applet.Applet;
public class CountClick extends Applet
{int CurrentMarks=0;
public boolean mouseDown(Event evt,int x,int y)
{ CurrentMarks++;
repaint();
return true;
}
public void paint(Graphics g)
{ g.drawString(" "+CurrentMarks,10,10);}
}
import java.awt.*;
import java.applet.Applet;
public class CountClick extends Applet
{int CurrentMarks=0;
public boolean mouseDown(Event evt,int x,int y)
{ CurrentMarks++;
repaint();
return true;
}
public void paint(Graphics g)
{ g.drawString(" "+CurrentMarks,10,10);}
}
解决方案 »
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