簡(jiǎn)單記事本的java程序代碼

1、簡(jiǎn)單記事本的java程序代碼涉及到兩個(gè)文件：第一個(gè)文件中的代碼：package MyProject;import java.awt.BorderLayout;import javax.swing.JPanel;import javax.swing.JFrame;import java.awt.Dimension;import javax.swing.JMenuBar;import javax.swing.JMenu;import javax.swing.JMenuItem;import javax.swing.JLabel;import java.awt.Rectangle;import ja

2、vax.swing.JTextArea;import javax.swing.JScrollPane;import java.awt.datatransfer.*;import java.io.*;public class MainFrame extends JFrame private static final long serialVersionUID = 1L; private JPanel jContentPane = null; private JMenuBar jJMenuBar = null; private JMenu jMenu = null; private JMenu j

3、Menu1 = null; private JMenu jMenu2 = null; private JMenuItem jMenuItem = null; private JMenuItem jMenuItem1 = null; private JMenuItem jMenuItem2 = null; private JMenuItem jMenuItem3 = null; private JLabel jLabel = null; private JScrollPane jScrollPane = null; private JTextArea jTextArea = null; priv

4、ate JMenuItem jMenuItem4 = null; private JMenuItem jMenuItem5 = null; private JMenuItem jMenuItem6 = null; private JMenuItem jMenuItem7 = null; private static MainFrame myMainFrame=null; private static String textstr=""/用于記錄文本文件的路徑 private File myFile=null; private FileReader myrder=null;

5、private FileWriter mywr=nulJava培訓(xùn)l; /* * This is the default constructor */ public MainFrame() super(); initialize(); /* * This method initializes this * * return void */ private void initialize() this.setSize(412, 350); this.setJMenuBar(getJJMenuBar(); this.setContentPane(getJContentPane(); this.se

6、tTitle("JFrame"); this.addWindowListener(new java.awt.event.WindowAdapter() public void windowActivated(java.awt.event.WindowEvent e) if(!textstr.equals("") try myFile=new File(textstr); if(!myFile.exists() myFile.createNewFile(); myrder=new FileReader(myFile); char mychar=new ch

7、ar(int)myFile.length(); myrder.read(mychar); String tmp=new String(mychar); jTextArea.setText(tmp); myrder.close(); catch(Exception ee) ee.printStackTrace(); public void windowClosing(java.awt.event.WindowEvent e) System.exit(0); ); this.setVisible(true); myMainFrame=this; /* * This method initializ

8、es jContentPane * */ private JPanel getJContentPane() if (jContentPane = null) jLabel = new JLabel(); jLabel.setBounds(new Rectangle(15, 18, 65, 18); jLabel.setText("文件內(nèi)容："); jContentPane = new JPanel(); jContentPane.setLayout(null); jContentPane.add(jLabel, null); jContentPane.add(getJScr

9、ollPane(), null); return jContentPane; /* * This method initializes jJMenuBar * * return javax.swing.JMenuBar */ private JMenuBar getJJMenuBar() if (jJMenuBar = null) jJMenuBar = new JMenuBar(); jJMenuBar.add(getJMenu(); jJMenuBar.add(getJMenu1(); jJMenuBar.add(getJMenu2(); return jJMenuBar; /* * Th

10、is method initializes jMenu * * return javax.swing.JMenu */ private JMenu getJMenu() if (jMenu = null) jMenu = new JMenu(); jMenu.setText("文件"); jMenu.add(getJMenuItem(); jMenu.add(getJMenuItem1(); jMenu.add(getJMenuItem2(); jMenu.add(getJMenuItem3(); return jMenu; /* * This method initial

11、izes jMenu1 * * return javax.swing.JMenu */ private JMenu getJMenu1() if (jMenu1 = null) jMenu1 = new JMenu(); jMenu1.setText("編輯"); jMenu1.add(getJMenuItem4(); jMenu1.add(getJMenuItem5(); jMenu1.add(getJMenuItem6(); return jMenu1; /* * This method initializes jMenu2 * * return javax.swing

12、.JMenu */ private JMenu getJMenu2() if (jMenu2 = null) jMenu2 = new JMenu(); jMenu2.setText("幫助"); jMenu2.add(getJMenuItem7(); return jMenu2; /* * This method initializes jMenuItem * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem() if (jMenuItem = null) jMenuItem = new JM

13、enuItem(); jMenuItem.setText("打開"); jMenuItem.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) MainFrame.this.myMainFrame.setEnabled(false); SelectTextFile mysl=new SelectTextFile(); mysl.setVisible(true); ); return jMenuItem;

14、/* * This method initializes jMenuItem1 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem1() if (jMenuItem1 = null) jMenuItem1 = new JMenuItem(); jMenuItem1.setText("關(guān)閉"); jMenuItem1.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt

15、.event.ActionEvent e) try myFile=null; catch(Exception ee) ee.printStackTrace(); jTextArea.setText(""); ); return jMenuItem1; /* * This method initializes jMenuItem2 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem2() if (jMenuItem2 = null) jMenuItem2 = new JMenuItem(); j

16、MenuItem2.setText("保存"); jMenuItem2.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) try String tmp=jTextArea.getText(); char mychar=tmp.toCharArray(); myFile.delete(); myFile.createNewFile(); mywr=new FileWriter(myFile); mywr.

17、write(mychar); mywr.close(); catch(Exception ee) ee.printStackTrace(); ); return jMenuItem2; /* * This method initializes jMenuItem3 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem3() if (jMenuItem3 = null) jMenuItem3 = new JMenuItem(); jMenuItem3.setText("退出"); jMenuIte

18、m3.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) System.exit(0); ); return jMenuItem3; /* * This method initializes jScrollPane * * return javax.swing.JScrollPane */ private JScrollPane getJScrollPane() if (jScrollPane = null) jScroll

19、Pane = new JScrollPane(); jScrollPane.setBounds(new Rectangle(15, 46, 371, 225); jScrollPane.setViewportView(getJTextArea(); return jScrollPane; /* * This method initializes jTextArea * * return javax.swing.JTextArea */ private JTextArea getJTextArea() if (jTextArea = null) jTextArea = new JTextArea

20、(); return jTextArea; /* * This method initializes jMenuItem4 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem4() if (jMenuItem4 = null) jMenuItem4 = new JMenuItem(); jMenuItem4.setText("復(fù)制"); jMenuItem4.addActionListener(new java.awt.event.ActionListener() public void ac

21、tionPerformed(java.awt.event.ActionEvent e) MainFrame.this.setClipboardText(MainFrame.this.getToolkit().getSystemClipboard(),jTextArea.getSelectedText(); ); return jMenuItem4; /* * This method initializes jMenuItem5 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem5() if (jMenuItem5

22、 = null) jMenuItem5 = new JMenuItem(); jMenuItem5.setText("剪切"); jMenuItem5.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) MainFrame.this.setClipboardText(MainFrame.this.getToolkit().getSystemClipboard(),jTextArea.getSelected

23、Text(); jTextArea.setText(jTextArea.getText().substring(0,jTextArea.getSelectionStart(); ); return jMenuItem5; /* * This method initializes jMenuItem6 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem6() if (jMenuItem6 = null) jMenuItem6 = new JMenuItem(); jMenuItem6.setText("黏

24、貼"); jMenuItem6.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) try jTextArea.setText(jTextArea.getText().substring(0,jTextArea.getSelectionStart(); jTextArea.setText(jTextArea.getText()+(MainFrame.this.getClipboardText(MainFrame.t

25、his.getToolkit().getSystemClipboard(); catch(Exception ee) ee.printStackTrace(); ); return jMenuItem6; /* * This method initializes jMenuItem7 * * return javax.swing.JMenuItem */ private JMenuItem getJMenuItem7() if (jMenuItem7 = null) jMenuItem7 = new JMenuItem(); jMenuItem7.setText("關(guān)于記事本"); jMenuItem7.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) /暫無代碼！ ); return jMenuItem7; public static void main(String args) new Mai