AWT인터페이스, 이벤트 사용해서 간단한 창 만들기

import java.awt.*;
import java.awt.event.*;

 

public class KHJ200153077 extends Frame{

 

 String msg;
 Checkbox c1,c2;
 Button b;
 TextField t1;
 TextArea t2;
 Panel p;

 

 KHJ200153077(){
  setLayout(new BorderLayout());

 

  p = new Panel();
  c1 = new Checkbox("사과");
  c2 = new Checkbox("딸기");
  b = new Button("옙 베베");
  t1 = new TextField();
  t2 = new TextArea();

  

  t1.setColumns(15);
  t2.setColumns(20);
  t2.setRows(20);

  

  b.addActionListener(new HandleB());
  c1.addItemListener(new HandleC());
  c2.addItemListener(new HandleC());
  t1.addActionListener(new HandleA());
  t2.addTextListener(new HandleT());
  addWindowListener(new HandleW());

  

  p.add(c1);
  p.add(c2);
  p.add(b);
  p.add(t1);

  

  add(p, BorderLayout.NORTH);
  add(t2,BorderLayout.CENTER);

    }

   class HandleB implements ActionListener{
     public void actionPerformed(ActionEvent ae){
            t2.append(b.getLabel()+"\n");
     }

   }

   class HandleC implements ItemListener{
     public void itemStateChanged(ItemEvent ie){
        if(c1.getState()){ // C1 체크박스가 선택되었다면....
          msg = "체크박스: "+ c1.getLabel()+": ["+c1.getState()+"]"+"\n";

         // 그 체크박스의 Label을 반환

        }else{
          msg ="체크박스: " + c1.getLabel()+ ": [" +c1.getState()+ "]"+ "\n";

        }
    t2.append(msg);
    

    if(c2.getState()){
         msg = "체크박스: " +c2.getLabel()+ ": [ " +c2.getState()+ "]"+ "\n";

       }else{
         msg = "체크박스: " +c2.getLabel()+ ": [" +c2.getState() +"]"+ "\n";

       }

    t2.append(msg);
   }
   }

   class HandleT implements TextListener{
     public void textValueChanged(TextEvent t){
      t2.setText(t2.getText());
     }
 }

   class HandleA implements ActionListener{
     public void actionPerformed(ActionEvent a){
      t2.append(t1.getText()+"\n");
      t1.setText("");
     }
  }

   class HandleW extends WindowAdapter{
        public void windowClosing(WindowEvent we){
            System.exit(0);
        }
   }

 public static void main(String args[]){

        KHJ200153077 khj = new KHJ200153077();
        khj.setSize(350,300);
        khj.show();
 }

}