[Java] TextWriter

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.EventQueue;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class TextWriter {

    private JFrame frame;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    TextWriter window = new TextWriter();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public TextWriter() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setTitle("TextWriter");
        frame.setBounds(100, 100, 500, 350);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JEditorPane editorPane = new JEditorPane();
        editorPane.setBounds(10, 10, 464, 258);
        frame.getContentPane().add(editorPane);

        JButton button_Save = new JButton("Save");
        button_Save.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                // 建立 fcSaveAs (JFileChooser)，用以設定儲存位置
                JFileChooser fcSaveAs = new JFileChooser();
                // 設定 fcSaveAs 視窗中的標題
                fcSaveAs.setDialogTitle("Save as ..");
                // 當按下 fcSaveAs 視窗中的 [確認] 按鈕
                if(fcSaveAs.showSaveDialog(fcSaveAs) == JFileChooser.APPROVE_OPTION) {

                    if (WriteTextToFile(editorPane.getText(), fcSaveAs.getSelectedFile().getAbsolutePath(), "UTF-8", false)) {
                        JOptionPane.showMessageDialog(null, "Write file successfully.\n", frame.getTitle(), JOptionPane.INFORMATION_MESSAGE );
                    } else {
                        JOptionPane.showMessageDialog(null, "Write file faild.\n", frame.getTitle(), JOptionPane.ERROR_MESSAGE);
                    }
                }
            }
        });
        button_Save.setBounds(10, 278, 87, 23);
        frame.getContentPane().add(button_Save);
    }

    /**
     * 寫入文字檔案至指定路徑
     *
     * @param fileContext   寫入檔案之文字內容
     * @param filePath      寫入檔案之絕對路徑或相對路徑
     * @param encoding      寫入檔案之編碼格式
     * @param isAppend      是否將文字內容添加至檔案尾端
     * @return              回傳寫入文字檔案結果
     */
    private boolean WriteTextToFile(String fileContext, String filePath, String fileEncoding, boolean isAppend) {
        // 先建立檔案
        // fcSaveAs.getSelectedFile().getAbsolutePath() 可取得 fcSaveAs 中的絕對路徑
        File file = new File(filePath);
        try {
            // 開始寫入檔案
            BufferedWriter bufWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, isAppend), Charset.forName(fileEncoding)));
            bufWriter.write(fileContext);
            bufWriter.close();
            return true;
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return false;
        }
    }
}