JAVA 메모장 예제

간단한 메모장 예제 파일입니다.

입력창과 복사 , 붙여넣기, 잘라내기, 삭제 버튼이 들어 있습니다.

메모장 예제.zip

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package pack1;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

public class Memojang extends JFrame implements ActionListener{

       JButton btnCopy = new JButton("복사");

       JButton btnPaste = new JButton("붙여넣기");

       JButton btnCut = new JButton("잘라내기");

       JButton btnDel = new JButton("삭제");

       

       JTextArea txtMemo = new JTextArea("", 10, 30);

       String copyText;

       

       public Memojang() {

              super("제목 없음 - 메모장");

              

              initLayout();

              

              setBounds(200,200,400,320);

              setVisible(true);

              

              addWindowListener((WindowListener) new WindowAdapter() {

                     @Override

                     public void windowClosing(WindowEvent arg0) {

                           int re = JOptionPane.showConfirmDialog(Memojang.this,  "정말 종료할까요?" , "종료", JOptionPane.YES_NO_OPTION);

                           if(re == JOptionPane.YES_OPTION)

                                  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                            else

                                   setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);

                     }

              });

       }

       

       private void initLayout() {

              JPanel pn = new JPanel();

              pn.add(btnCopy);

              pn.add(btnPaste);

              pn.add(btnCut);

              pn.add(btnDel);

                           

              add("South", pn);

              JScrollPane ScrollPane = new JScrollPane(txtMemo);

              add("Center", txtMemo);

              

              btnCopy.addActionListener(this);

              btnPaste.addActionListener(this);

              btnCut.addActionListener(this);

              btnDel.addActionListener(this);

              

              

       }

       

       @Override

       public void actionPerformed(ActionEvent e) {

              if(e.getSource() == btnCopy) { // 복사 작업

                     copyText = txtMemo.getSelectedText();

              }else if(e.getSource() == btnPaste) { // 붙여넣기

                     int position = txtMemo.getCaretPosition();

                     txtMemo.insert(copyText, position);

              }else if(e.getSource() == btnCut) {

                     copyText = txtMemo.getSelectedText();

                     

                     int start = txtMemo.getSelectionStart();

                     int end = txtMemo.getSelectionEnd();

                     txtMemo.replaceRange("", start, end);

              }else if(e.getSource() == btnDel) { //삭제

                     int start = txtMemo.getSelectionStart();

                     int end = txtMemo.getSelectionEnd();

                     txtMemo.replaceRange("",start,end);

              }

              

              txtMemo.requestFocus();

              

       }

       

       public static void main(String[] args) {

              new Memojang();

       }

}

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본 포스팅은 IT 교육기관인 KIC 캠퍼스의 지원을 받은 리포트입니다.

본문은 '남궁성, JAVA의 정석 3rd Edition' 교재를 공부하면서 주요 내용을 요약하고 있습니다.

혹시 잘못되거나 문제 소지시 댓글 남겨주시면 조치하겠습니다.

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