package yan1;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class paneltest extends JApplet
{JPanel panelobj;
public paneltest(){
panelobj=new JPanel();
getContentPane().add(panelobj);
}
}
class buttontest extends paneltest{
JButton buttonobj1;
JButton buttonobj2;
public buttontest(){
buttonobj1=new JButton( "ji wo ");
buttonobj2=new JButton( "an niou 2 ");
buttonobj1.setEnabled(true);
buttonobj2.setEnabled(false);
panelobj.add(buttonobj1);
panelobj.add(buttonobj2);
}
}
class flowlayout extends buttontest{
FlowLayout layoutobj;
public flowlayout(){
layoutobj=new FlowLayout( FlowLayout.CENTER,10,10);
panelobj.setLayout(layoutobj);
}
}
class eventest extends flowlayout
{
ButtonEvent1 beobj1;
ButtonEvent2 beobj2;
public eventest()
{ beobj1=new ButtonEvent1();
beobj2=new ButtonEvent2();
buttonobj1.addMouseListener(beobj1);
buttonobj2.addMouseListener(beobj2);
}
class ButtonEvent1 extends MouseAdapter
{
public void mouseClicked(MouseEvent e)
{
buttonobj1.setEnabled(false);
buttonobj1.setText( "AN NIOU 1 ");
buttonobj1.setEnabled(true);
buttonobj2.setText( "ji wo ");
}
}
class ButtonEvent2 extends MouseAdapter
{
public void mouseClicked(MouseEvent e)
{ buttonobj2.setEnabled(false);
buttonobj2.setText( "an niou 2 ");
buttonobj1.setEnabled(true);
buttonobj1.setText( "ji wo ");
}
}
}
public class Yan2 {
public void init(){
new eventest();
}
}
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错误提示为
java.lang.IllegalAccessException: Class sun.applet.AppletPanel can not access a member of class yan1.paneltest with modifiers "public "
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)