Text editor: simple form

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import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class TE extends JFrame{
        private static final long serialVersionUID = 1L;
	private JTextArea tx = new JTextArea();
	final JFileChooser fc = new JFileChooser();
	private JButton open = new JButton("Open");
	private JButton save = new JButton("Save");
	private JScrollPane jsp;
	public TE(){
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		tx.setTabSize(2);
		jsp = new JScrollPane(tx);
		JPanel mn = new JPanel();
		jsp.setPreferredSize(new Dimension(800, 550));
		JPanel ms = new JPanel(new GridBagLayout());
		ms.add(open);
		ms.add(save);
		fc.setCurrentDirectory(new java.io.File("."));
		mn.add(new JSplitPane(JSplitPane.VERTICAL_SPLIT, jsp, ms));
		open.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
			    if (e.getSource() == open) {
			        int returnVal = fc.showOpenDialog(TE.this);
			        if (returnVal == JFileChooser.APPROVE_OPTION) {
			            File file = fc.getSelectedFile();
			            if (file.canRead()){
			            	rds(file);
			            }else{
			            	JOptionPane.showMessageDialog(null, "Can't open file.");
			            }
			        } 
			   } 
			}
			public void rds(File SourceFile){
				tx.setText("");
				Scanner inputs;
				try {
					inputs = new Scanner(SourceFile);
					while(inputs.hasNext()){
						tx.append(inputs.nextLine()+"\n");
					}
					inputs.close();
				} catch (FileNotFoundException e) {
					JOptionPane.showMessageDialog(null, e.getMessage());
				}
			}
		});
		save.addActionListener(new ActionListener() {
			private JDialog diag = new JDialog(TE.this);
			private JLabel name_lbl = new JLabel("Filename: ");
			private JTextField name_ln = new JTextField();
			private JButton sav = new JButton("Save");
			
			public void actionPerformed(ActionEvent arg0) {
				sav.addActionListener(new sv());
				name_ln.addActionListener(new sv());
				JPanel mn = new JPanel(new GridBagLayout());
				name_ln.setPreferredSize(new Dimension(200, 20));
				mn.add(name_lbl);
				mn.add(name_ln);
				mn.add(sav);
				diag.add(mn);
				diag.pack();
				diag.setVisible(true);
			}
			
			class sv implements ActionListener{
				public void actionPerformed(ActionEvent e) {
					if (name_ln.getText().equals("")) {
						JOptionPane.showMessageDialog(null, "Field empty");
						return;
					}
					BufferedWriter bw;
					try {
						String choosertitle = ""; 
						JFileChooser chooser = new JFileChooser(); 
					    chooser.setCurrentDirectory(new java.io.File("."));
					    chooser.setDialogTitle(choosertitle);
					    chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
					    chooser.setAcceptAllFileFilterUsed(false);
					    if (chooser.showOpenDialog(TE.this) == JFileChooser.APPROVE_OPTION) { 
					    	JOptionPane.showMessageDialog(null, chooser.getCurrentDirectory());
					    	bw = new BufferedWriter(new FileWriter(chooser.getCurrentDirectory()+"\\"+name_ln.getText()));
					    	bw.write(tx.getText());
					    	bw.close();
					    	JOptionPane.showMessageDialog(null, "Saved at\n"+chooser.getCurrentDirectory()+"\\"+name_ln.getText());
					    }
					    else if (chooser.showOpenDialog(TE.this)==JFileChooser.CANCEL_OPTION){return;}
					} catch (IOException e1) {
						JOptionPane.showMessageDialog(null, e1.getMessage());
					}
				}
			}
		});
		mn.setPreferredSize(new Dimension(800, 600));
		add(mn);
	}
	
	public static void main(String arg[]){
		TE t= new TE();
		t.pack();
		t.setVisible(true);
	}
}