LoadSave.java Source code

Introduction

Here is the source code for LoadSave.java

Source

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();
    }
}