자바로 메모장 만들기

자바로 메모장 만들기

 

간단한 메모장 예제 파일입니다.

입력창과 복사 , 붙여넣기, 잘라내기, 삭제 버튼이 들어 있습니다.

 

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();

}

}