Source Code : LoadSave: Button action

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LoadSave: Button action

  
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.io.FileReader;
import java.io.FileWriter;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.text.JTextComponent;

public class LoadSave {

  public static void main(String args[]) {
    final String filename = "text.out";
    JFrame frame = new JFrame("Loading/Saving Example");
    Container content = frame.getContentPane();

    final JTextField textField = new JTextField();
    content.add(textField, BorderLayout.NORTH);

    JPanel panel = new JPanel();

    Action loadAction = new AbstractAction() {
      public void actionPerformed(ActionEvent e) {
        try {
          doLoadCommand(textField, filename);
        } catch (Exception e1) {
          // TODO Auto-generated catch block
          e1.printStackTrace();
        }
      }
    };
    loadAction.putValue(Action.NAME, "Load");
    JButton loadButton = new JButton(loadAction);
    panel.add(loadButton);

    Action saveAction = new AbstractAction() {
      public void actionPerformed(ActionEvent e) {
        try {
          doSaveCommand(textField, filename);
        } catch (Exception e1) {
          // TODO Auto-generated catch block
          e1.printStackTrace();
        }
      }
    };
    saveAction.putValue(Action.NAME, "Save");
    JButton saveButton = new JButton(saveAction);
    panel.add(saveButton);

    Action clearAction = new AbstractAction() {
      {
        putValue(Action.NAME, "Clear");
      }

      public void actionPerformed(ActionEvent e) {
        textField.setText("");
      }
    };
    JButton clearButton = new JButton(clearAction);
    panel.add(clearButton);

    content.add(panel, BorderLayout.SOUTH);

    frame.setSize(250, 150);
    frame.setVisible(true);
  }

  public static void doSaveCommand(JTextComponent textComponent, String filename) throws Exception {
    FileWriter writer = null;
    writer = new FileWriter(filename);
    textComponent.write(writer);
    writer.close();
  }

  public static void doLoadCommand(JTextComponent textComponent, String filename) throws Exception {
    FileReader reader = null;
    reader = new FileReader(filename);
    textComponent.read(reader, filename);
    reader.close();
  }
}

           
         
    
  

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