framework.java-优快云博客

本文介绍了一个使用Java Swing构建的简单图形用户界面(GUI)应用程序，该程序支持基本的文件读取和保存功能。通过两个按钮操作，用户可以指定文件路径来读取内容并显示在文本区域中，或者将文本区域的内容保存到指定的文件中。

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import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import java.awt.Dimension;
import javax.swing.JButton;
import java.awt.Rectangle;
import javax.swing.JList;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import java.io.*;

import javax.swing.JOptionPane;
public class framework extends JFrame {

private static final long serialVersionUID = 1L;

private JPanel jContentPane = null;

private JButton jButton1 = null;

private JButton jButton2 = null;

private JTextArea jTextArea = null;

private JTextField jTextField = null;

/**
* This method initializes jButton1
*
* @return javax.swing.JButton
*/
private JButton getJButton1() {
  if (jButton1 == null) {
   jButton1 = new JButton();
   jButton1.setBounds(new Rectangle(556, 23, 60, 28));
   jButton1.setText("读出");
   jButton1.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent e) {

     String name =jTextField.getText();

     File ss = new File(name);
     try {
      FileReader a = new FileReader(ss);
      BufferedReader br = new BufferedReader(a);

      String s = br.readLine();
      while (s != null)// 值非空
      {
       jTextArea.setText(s);
       s = br.readLine();

}
br.close();

}

catch (IOException e1) {

JOptionPane.showMessageDialog(null, "文件路径错误，请重新输入");

     }
    }
   });

}
return jButton1;
}

/**
* This method initializes jButton2
*
* @return javax.swing.JButton
*/
private JButton getJButton2() {
  if (jButton2 == null) {
   jButton2 = new JButton();
   jButton2.setBounds(new Rectangle(559, 249, 60, 28));
   jButton2.setText("保存");
   jButton2.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent e) {
     String name =jTextField.getText();
     String s=null;
     File save = new File(name);
     try {
      s=jTextArea.getText();

      //String ss==s.readLine();
      //BufferedReader sr=new BufferedReader(s);
      PrintWriter out = new PrintWriter(new FileWriter(save));
      if (!s.equals("")) {
       out.println(s);
      }
      out.close();

     } catch (IOException e2) {

      JOptionPane.showMessageDialog(null, "文件路径错误，请重新输入");
     }





    }







   });
  }
  return jButton2;
}

/**
* This method initializes jTextArea
*
* @return javax.swing.JTextArea
*/
private JTextArea getJTextArea() {
  if (jTextArea == null) {
   jTextArea = new JTextArea();
   jTextArea.setBounds(new Rectangle(2, 68, 459, 224));
   jTextArea.setText("");
  }
  return jTextArea;
}

/**
* This method initializes jTextField
*
* @return javax.swing.JTextField
*/
private JTextField getJTextField() {
  if (jTextField == null) {
   jTextField = new JTextField();
   jTextField.setBounds(new Rectangle(22, 13, 211, 44));
   jTextField.setText("");

}
return jTextField;
}

/**
* @param args
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  SwingUtilities.invokeLater(new Runnable() {
   public void run() {
    shurushuchu thisClass = new shurushuchu();
    thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    thisClass.setVisible(true);
   }
  });
}

/**
* This is the default constructor
*/
public framework() {
super();
initialize();
}

/**
* This method initializes this
*
* @return void
*/
private void initialize() {
  this.setSize(641, 339);
  this.setContentPane(getJContentPane());
  this.setTitle("JFrame");
}

/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
  if (jContentPane == null) {
   jContentPane = new JPanel();
   jContentPane.setLayout(null);
   jContentPane.add(getJButton1(), null);
   jContentPane.add(getJButton2(), null);
   jContentPane.add(getJTextArea(), null);
   jContentPane.add(getJTextField(), null);
  }
  return jContentPane;
}

} // @jve:decl-index=0:visual-constraint="10,10"