import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextArea;
public class DisplayFile {
/**
* @param args
*/
public static void main(String[] args)throws IOException {
// TODO Auto-generated method stub
JFrame frame =new JFrame("Display File");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTextArea ta=new JTextArea(20,30);
JFileChooser chooser=new JFileChooser();
int status =chooser.showOpenDialog(null);
if(status!=JFileChooser.APPROVE_OPTION)
ta.setText("No file chosen!");
else
{
File file=chooser.getSelectedFile();
Scanner scan=new Scanner(file);
&nb
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
public class test {
public static void main(String[] args) {
ArrayList<ArrayList<Integer>> list = getArrays(1, 20, 30);
Iterator<ArrayList<Integer>> iter = list.itera ......
