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Main.java
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154 lines (117 loc) · 3.9 KB
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package notepad;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.io.*;
public class Main extends JFrame {
private static final long serialVersionUID = 1L;
private JMenuBar jmnMenu = null;
private JTextArea txtFile = null;
private File selectedFile = null;
private JFileChooser fileChooser;
private Main() {
super();
initialize();
this.setVisible(true);
}
public static void main(String[] args) {
new Main();
}
private void initialize() {
initializeFileChooser();
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setName("frmNotepad");
this.setContentPane(getTxtFile());
this.setJMenuBar(getJmnMenu());
this.setTitle("A Simple Notepad");
this.setSize(new java.awt.Dimension(800, 600));
}
private void initializeFileChooser() {
String currentDir = "";
try {
currentDir = System.getProperty("user.dir");
} catch (SecurityException se) {
se.printStackTrace();
}
fileChooser = new JFileChooser(currentDir);
fileChooser.setFileFilter(new FileNameExtensionFilter("Text File (TXT)", "TXT"));
}
private JMenuBar getJmnMenu() {
if (jmnMenu == null) {
jmnMenu = new JMenuBar();
jmnMenu.add(dosyaMenuOlustur());
}
return jmnMenu;
}
private JMenu dosyaMenuOlustur() {
JMenu jmFile = new JMenu("File");
JMenuItem jmi = new JMenuItem("New");
jmi.addActionListener(e -> newFile());
jmFile.add(jmi);
jmi = new JMenuItem("Open");
jmi.addActionListener(e -> {
try {
ac();
} catch (IOException ex) {
ex.printStackTrace();
}
});
jmFile.add(jmi);
jmi = new JMenuItem("Save");
jmi.addActionListener(e -> {
try {
save();
} catch (IOException ex) {
ex.printStackTrace();
}
});
jmFile.add(jmi);
jmi = new JMenuItem("Exit");
jmi.addActionListener(e -> System.exit(0));
jmFile.add(jmi);
return jmFile;
}
private void ac() throws IOException {
int ret = fileChooser.showDialog(null, "Open");
if (ret == JFileChooser.APPROVE_OPTION) {
selectedFile = fileChooser.getSelectedFile();
//Dosyayi ekrana yukleyelim
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(
new FileInputStream(selectedFile)));
StringBuilder content = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
content.append(line).append("\n");
}
txtFile.setText(content.toString());
bufferedReader.close();
}
}
private void save() throws IOException {
if (selectedFile == null) {
//Once kaydedilecek dosya bilgisini alalim
int ret = fileChooser.showDialog(null, "Save");
if (ret == JFileChooser.APPROVE_OPTION) {
selectedFile = fileChooser.getSelectedFile();
}
}
//Daha sonra selectedFile uzerine kayit yapalim
String dosya = selectedFile.getAbsolutePath();
if (selectedFile.delete()) {
selectedFile = new File(dosya);
//Dolduralim
FileOutputStream fos = new FileOutputStream(selectedFile);
fos.write(txtFile.getText().getBytes());
fos.close();
}
}
private void newFile() {
selectedFile = null;
txtFile.setText("");
}
private JScrollPane getTxtFile() {
if (txtFile == null) {
txtFile = new JTextArea();
}
return new JScrollPane(txtFile);
}
}