showdiary.java

基于java开发的个人数字助理

/*
 * ShowDiary.java
 *
 * Created on 2008年4月27日, 下午2:47
 */

package pda;

import java.awt.FileDialog;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import javax.swing.JOptionPane;

/**
 *
 * @author  Administrator
 */
public class ShowDiary extends javax.swing.JFrame {
    
    FileDialog fsave=new FileDialog(this,"保存文件对话框",FileDialog.SAVE);
    FileDialog fopen=new FileDialog(this,"打开文件对话框",FileDialog.LOAD);

    private String path;
    /** Creates new form ShowDiary */
    public ShowDiary(String path) {
        super("显示日志");
        initComponents();
        this.path=path;
        openFile(path);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        conTextArea = new javax.swing.JTextArea();
        openButton = new javax.swing.JButton();
        delButton = new javax.swing.JButton();
        saveButton = new javax.swing.JButton();
        jMenuBar1 = new javax.swing.JMenuBar();
        Menu = new javax.swing.JMenu();
        saveMenuItem = new javax.swing.JMenuItem();
        delMenuItem = new javax.swing.JMenuItem();
        openMenuItem = new javax.swing.JMenuItem();

        conTextArea.setColumns(20);
        conTextArea.setRows(5);
        jScrollPane1.setViewportView(conTextArea);

        openButton.setText("\u6253\u5f00\u5176\u4ed6\u65e5\u5fd7");
        openButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                openButtonActionPerformed(evt);
            }
        });

        delButton.setText("\u5220\u9664\u5185\u5bb9");
        delButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                delButtonActionPerformed(evt);
            }
        });

        saveButton.setText("\u4fdd\u5b58\u65e5\u5fd7");
        saveButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                saveButtonActionPerformed(evt);
            }
        });

        Menu.setText("\u7f16\u8f91");
        saveMenuItem.setText("\u4fdd\u5b58\u65e5\u5fd7");
        saveMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                saveMenuItemActionPerformed(evt);
            }
        });

        Menu.add(saveMenuItem);

        delMenuItem.setText("\u5220\u9664\u5185\u5bb9");
        delMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                delMenuItemActionPerformed(evt);
            }
        });

        Menu.add(delMenuItem);

        openMenuItem.setText("\u6253\u5f00\u5176\u4ed6\u65e5\u5fd7");
        openMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                openMenuItemActionPerformed(evt);
            }
        });

        Menu.add(openMenuItem);

        jMenuBar1.add(Menu);

        setJMenuBar(jMenuBar1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(saveButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(delButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(openButton)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(openButton)
                    .addComponent(delButton)
                    .addComponent(saveButton))
                .addContainerGap(40, Short.MAX_VALUE))
        );
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-400)/2, (screenSize.height-318)/2, 400, 318);
    }// </editor-fold>//GEN-END:initComponents

    private void openMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_openMenuItemActionPerformed
// TODO 将在此处添加您的处理代码：
        openFile();
    }//GEN-LAST:event_openMenuItemActionPerformed

    private void delMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_delMenuItemActionPerformed
// TODO 将在此处添加您的处理代码：
        conTextArea.setText(null);
    }//GEN-LAST:event_delMenuItemActionPerformed

    private void saveMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_saveMenuItemActionPerformed
// TODO 将在此处添加您的处理代码：
        saveFile(path);
    }//GEN-LAST:event_saveMenuItemActionPerformed

    private void delButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_delButtonActionPerformed
// TODO 将在此处添加您的处理代码：
        conTextArea.setText(null);
    }//GEN-LAST:event_delButtonActionPerformed

    private void saveButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_saveButtonActionPerformed
// TODO 将在此处添加您的处理代码：
        saveFile(path);
    }//GEN-LAST:event_saveButtonActionPerformed

    private void openButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_openButtonActionPerformed
// TODO 将在此处添加您的处理代码：
        openFile();
    }//GEN-LAST:event_openButtonActionPerformed
    
    /**
     * @param args the command line arguments
     */
    /*public static void main(String args[]) {
        ShowDiary sd=new ShowDiary("2008年4月15日.txt");
        sd.setVisible(true);
    }*/
    
    public void openFile(String path){
        try{
                File file=new File(path);
                FileReader fr=new FileReader(file);
                BufferedReader br=new BufferedReader(fr);
                while((s=br.readLine())!=null)
                    conTextArea.append(s+'\n');
                br.close();
                fr.close();
            }catch (Exception e){}
    }
    
    public void openFile(){
        fopen.setVisible(true);
        conTextArea.setText(null);
        String s;
        if(fopen.getFile()!=null)
        {
            try{
                File file=new File(fopen.getDirectory(),fopen.getFile());
                FileReader fr=new FileReader(file);
                BufferedReader br=new BufferedReader(fr);
                while((s=br.readLine())!=null)
                    conTextArea.append(s+'\n');
                br.close();
                fr.close();
            }catch (Exception e){
                
            }
        }
    }
    
    public void saveFile(String path){
        
        try{
            File file=new File(path);
            FileWriter fw=new FileWriter(file);
            BufferedWriter bw=new BufferedWriter(fw);
            bw.write(conTextArea.getText(),0,(conTextArea.getText()).length());
            bw.flush();
            bw.close();
            fw.close();
            }catch(Exception e){
                
            }
        JOptionPane.showMessageDialog(null,"日志保存成功！");
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JMenu Menu;
    private javax.swing.JTextArea conTextArea;
    private javax.swing.JButton delButton;
    private javax.swing.JMenuItem delMenuItem;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JButton openButton;
    private javax.swing.JMenuItem openMenuItem;
    private javax.swing.JButton saveButton;
    private javax.swing.JMenuItem saveMenuItem;
    // 变量声明结束//GEN-END:variables

    private String s;
    
}