[예제] 각종 메뉴를 이용한 메모장

import java.awt.Color;

import java.awt.Font;

import java.awt.GraphicsEnvironment;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.io.File;

import java.io.IOException;

import java.nio.file.attribute.FileStoreAttributeView;

import javax.swing.DefaultListModel;

import javax.swing.JButton;

import javax.swing.JColorChooser;

import javax.swing.JDialog;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.KeyStroke;

import javax.swing.filechooser.FileFilter;

import javax.swing.filechooser.FileNameExtensionFilter;

import javax.swing.plaf.basic.BasicCheckBoxMenuItemUI;;

public class MenuEx extends JFrame implements ActionListener{

JScrollPane sp;

JTextArea ta = new JTextArea("메뉴 만들기");

JMenuBar menuBar = new JMenuBar();

JMenu fileMenu = new JMenu("파일");

JMenuItem newMenu = new JMenuItem("새글");

JMenuItem openMenu = new JMenuItem("열기");

JMenuItem saveMenu = new JMenuItem("저장");

JMenuItem endMenu = new JMenuItem("종료");

JMenu editMenu = new JMenu("편집");

JMenuItem copyMenu = new JMenuItem("복사");

JMenuItem cutMenu = new JMenuItem("오려두기");

JMenuItem pasteMenu = new JMenuItem("붙여넣기");

JMenu formMenu = new JMenu("서식");

JMenuItem fontMenu = new JMenuItem("글꼴");

JMenu colorMenu = new JMenu("색상표");

JMenuItem textColor = new JMenuItem("글자색");

JMenuItem backColor = new JMenuItem("배경색");

JMenu runMenu = new JMenu("실행");

JMenuItem chromMenu = new JMenuItem("크롬");

JMenuItem exepMenu = new JMenuItem("익스플로러");

JMenuItem memoMenu = new JMenuItem("메모장");

String textBuffer; //복사, 오려두기한 문자 저장 할 변수

//Dialog(내부 클래스) 객체 생성

FontDialog fDialog = new FontDialog();

public MenuEx() {

//단축키 설정

//컨트로+N 으로 새창열기

newMenu.setMnemonic(KeyEvent.VK_N);

newMenu.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, ActionEvent.CTRL_MASK));

//알트+O 으로 열기창 열기

openMenu.setMnemonic(KeyEvent.VK_O);

openMenu.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, ActionEvent.ALT_MASK));

// 종료하기

endMenu.setMnemonic(KeyEvent.VK_X);

endMenu.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, ActionEvent.ALT_MASK));

//이벤트 등록

newMenu.addActionListener(this); //파일

openMenu.addActionListener(this);

saveMenu.addActionListener(this);

endMenu.addActionListener(this);

copyMenu.addActionListener(this); //편집

cutMenu.addActionListener(this);

pasteMenu.addActionListener(this);

fontMenu.addActionListener(this); //서식

textColor.addActionListener(this);

backColor.addActionListener(this);

chromMenu.addActionListener(this); //실행

exepMenu.addActionListener(this);

memoMenu.addActionListener(this);

//메뉴 만들기

//파일

fileMenu.add(newMenu); fileMenu.add(openMenu); fileMenu.add(saveMenu); 

fileMenu.addSeparator();//경계선 만들기

fileMenu.add(endMenu);

menuBar.add(fileMenu);

//편집

editMenu.add(copyMenu); editMenu.add(cutMenu); editMenu.add(pasteMenu);

menuBar.add(editMenu);

//서식

formMenu.add(fontMenu); formMenu.add(colorMenu);

colorMenu.add(textColor); colorMenu.add(backColor);

menuBar.add(formMenu); 

//실행

runMenu.add(chromMenu); runMenu.add(exepMenu); runMenu.add(memoMenu);

menuBar.add(runMenu);

setJMenuBar(menuBar); //JFrame 컨테이너에 메뉴바 추가

sp = new JScrollPane(ta);

add(sp);

setSize(800, 500);

setVisible(true);

}

//내부 클래스 시작

class FontDialog extends JDialog implements ActionListener{

JPanel northPane = new JPanel(new GridLayout(1, 3));

JLabel lbl1 = new JLabel("글꼴");

JLabel lbl2 = new JLabel("글꼴 유형");

JLabel lbl3 = new JLabel("글자 크기");

JPanel centerPane = new JPanel(new GridLayout(1, 3));

JScrollPane sp1, sp3;

JList<String> list1 = new JList<String>();

JList<String> list2 = new JList<String>();

JList<Integer> list3 = new JList<Integer>();

JPanel southPane = new JPanel();

JButton okBtn = new JButton("확인");

JButton cancleBtn = new JButton("취소");

//List 모델 만들기

DefaultListModel<String> fontModel = new DefaultListModel<String>();

DefaultListModel<String> typeModel = new DefaultListModel<String>();

DefaultListModel<Integer> sizeModel = new DefaultListModel<Integer>();

FontDialog(){

setModal(true); //모달 세팅 : dialog창 뒤면 비활성화

northPane.add(lbl1);northPane.add(lbl2); northPane.add(lbl3);

add(northPane, "North");

//List 목록 만들기

//시스템에서 지원하는 글꼴정보 얻어오기

String fontName[] = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();

for(int i=0; i<fontName.length; i++){

fontModel.addElement(fontName[i]);

}

list1.setModel(fontModel);

//글자 유형 만들기

String typeName[] = {"보통", "진하게", "기울림꼴"};

for(int i=0; i<typeName.length; i++){

typeModel.addElement(typeName[i]);

}

list2.setModel(typeModel);

//글자 크기

for(int i=8; i<100; i+=2){

sizeModel.addElement(i);

}

list3.setModel(sizeModel);

sp1 = new JScrollPane(list1);

sp3 = new JScrollPane(list3);

centerPane.add(sp1); centerPane.add(list2); centerPane.add(sp3);

add(centerPane, "Center");

southPane.add(okBtn);

southPane.add(cancleBtn);

add(southPane, "South");

setSize(300, 300);

//이벤트 등록 : 두개의 버튼은 클릭하면 내부 클래스 오버라이딩으로 넘어간다.

okBtn.addActionListener(this);

cancleBtn.addActionListener(this);

}

//내부 클래스 오버라이딩

public void actionPerformed(ActionEvent ae){

String eventValue = ae.getActionCommand();

if(eventValue.equals("확인")){

Font fnt = new Font(list1.getSelectedValue(), list2.getSelectedIndex(), list3.getSelectedIndex());

ta.setFont(fnt);

setVisible(false);

}else if(eventValue.equals("취소")){

//dispose

setVisible(false);

}

}

}

//내부 클래스 끝

//오버라이딩

public void actionPerformed(ActionEvent ae){

Object obj = ae.getSource();

if(obj == endMenu){

dispose(); System.exit(0);

}else if(obj == newMenu){ //새글

ta.setText("");

}else if(obj == textColor){ //글자색

setTextColor();

}else if(obj == backColor){ //배경색

setBackColor();

}else if(obj == memoMenu){ //메모장 실행

run("notepad.exe");

}else if(obj == chromMenu){ //크롬 실행

run("C:/Program Files (x86)/Google/Chrome/Application/chrome.exe");

}else if(obj == exepMenu){ //ie 실행

run("C:/Program Files/Internet Explorer/iexplore.exe");

}else if(obj == openMenu){ //열기

fileOpen();

}else if(obj == saveMenu){ //저장

fileSave();

}else if(obj == copyMenu){ //복사하기

textCopy();

}else if(obj == pasteMenu){ //붙여넣기

textPaste();

}else if(obj == cutMenu){ //오려두기

textCut();

}else if(obj == fontMenu){

fDialog.setVisible(true);

}

}

//오려두기

public void textCut(){

textBuffer = ta.getSelectedText();

ta.replaceSelection("");

}

//붙여넣기

public void textPaste(){

ta.replaceSelection(textBuffer);

}

//복사 실행

public void textCopy(){

textBuffer = ta.getSelectedText();

}

//저장 실행

public void fileSave(){

JFileChooser fc = new JFileChooser();

int fileCount = fc.showSaveDialog(this);

File f = fc.getSelectedFile();

//getPath() : 경로 + 파일명, getName() : 파일명 구함

ta.append(f.getPath()+"="+f.getName()+"\n");

}

//열기 실행

public void fileOpen(){

JFileChooser fc = new JFileChooser();

fc.setMultiSelectionEnabled(true); //다중 선택 기능

//필터 객체 생성

FileFilter ff1 = new FileNameExtensionFilter("java", "Java", "JAVA", "JaVa");

fc.addChoosableFileFilter(ff1);//JFilechooser 객체에 필터 세팅

FileFilter ff2 = new FileNameExtensionFilter("class", "Class", "CLASS");

fc.addChoosableFileFilter(ff2);//JFilechooser 객체에 필터 세팅

FileFilter ff3 = new FileNameExtensionFilter("png", "jpg", "gif");

fc.addChoosableFileFilter(ff3);//JFilechooser 객체에 필터 세팅

//선택된 파일의 갯수가 리턴됨

int fileSelectCount = fc.showOpenDialog(this);

File f[] = fc.getSelectedFiles(); //선택된 파일 목록 얻어오기

for(int i=0; i <f.length; i++){

ta.append(f[i].getName()+"\n"); //파일명

}

}

//메모장 실행 예외처리

public void run(String programName){

Runtime run = Runtime.getRuntime();

try{

run.exec(programName);

}catch(IOException ie){

System.out.println(ie.getMessage()+"예외발생");

}

}

public void setTextColor(){ //글자색

JColorChooser cc = new JColorChooser();

// 부모컨테이너, 창제목, 기본컬러

Color color = cc.showDialog(this, "글자색", Color.black);

ta.setForeground(color);

}

public void setBackColor(){

JColorChooser cc = new JColorChooser();

Color color = cc.showDialog(this, "배경색", Color.white);

ta.setBackground(color);

}

public static void main(String[] args) {

new MenuEx();

}

}