Java sample(Menu bar)

//Example1c.java
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.filechooser.*;
public class Example1c
{
    //data
    Object[] colNames={"name","material","size","color","note"};
    Object[][] rowData={
        {"A01","cloth","large","white","soft"},
        {"K01","thread","thin","red","strong"},
        {"U01","paper","middle","yellow","cheap"},
        {"S01","string","middle","black","quality"},
    };
    JTable t= new JTable(rowData, colNames);
    //main
    public static void main(String args[]){
        Example1c sample = new Example1c();
    }
    //constructor
    public Example1c(){
        //make frame
        final JFrame f=new JFrame("MenuBar");
        f.setDefaultCloseOperation(f.EXIT_ON_CLOSE);
        //menu bar
        JMenuBar mb = new JMenuBar();
        JMenu mFile = new JMenu("File");
        JMenuItem iSaveAs = new JMenuItem("Save As ..");
        JMenuItem iExit = new JMenuItem("Exit");
        mFile.add(iSaveAs);
        mFile.addSeparator();
        mFile.add(iExit);
        mb.add(mFile);
        f.getRootPane().setJMenuBar(mb);
        //add table
        t.setRowHeight(20);
        t.setGridColor(Color.gray);
        JScrollPane sp=new JScrollPane();
        sp.getViewport().setView(t);
        sp.setPreferredSize(new Dimension(300, 120));
        JPanel p=new JPanel();
        p.add(sp);
        f.getContentPane().add(p,BorderLayout.CENTER);
        //show frame
        f.setLocation(10, 10);
        f.setBounds(50,50,320,185);
        f.setVisible(true);
        //actionlistener at exit click
        iExit.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent ae) {System.exit(0);}
        });
        iSaveAs.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    JFileChooser fc=new JFileChooser(System.getProperty("user.dir"));
                    //show dialog
                    int fd = fc.showSaveDialog(f);
                    try{
                        if(fd==JFileChooser.APPROVE_OPTION){
                            FileOutputStream fo=new FileOutputStream(fc.getSelectedFile());
                            PrintStream ps=new PrintStream(fo);
                            ps.println(t.getValueAt(0,0)+"\t"+t.getValueAt(0,1)+"\t"+t.getValueAt(0,2)+"\t"+t.getValueAt(0,3)+"\t"+t.getValueAt(0,4));
                            ps.println(t.getValueAt(1,0)+"\t"+t.getValueAt(1,1)+"\t"+t.getValueAt(1,2)+"\t"+t.getValueAt(1,3)+"\t"+t.getValueAt(1,4));
                            ps.println(t.getValueAt(2,0)+"\t"+t.getValueAt(2,1)+"\t"+t.getValueAt(2,2)+"\t"+t.getValueAt(2,3)+"\t"+t.getValueAt(2,4));
                            ps.println(t.getValueAt(3,0)+"\t"+t.getValueAt(3,1)+"\t"+t.getValueAt(3,2)+"\t"+t.getValueAt(3,3)+"\t"+t.getValueAt(3,4));
                            ps.close();
                            fo.close();
                        }
                    }catch(Exception ex){}
                }
            }
        );
    }
}