Tes

/**
 * @(#)GUI.java
 *
 *
 * @Filbert Nicholas
 * @version 1.00 2014/7/9
 */

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
//import javax.swing.filechooser.*;

public class GUI extends JFrame implements ActionListener {

	private Label lbl;
	public TextField tf;
	private Button bwsbtn, idbtn;
	public String path;
	File selectedFile;

	// Constructor to setup GUI components and event handling
    public GUI() {
    	setLayout(null);
    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    	setTitle("File Fragment Identifier");
    	setSize(300,150);
    	setVisible(true);
    	setResizable(false);

    	lbl = new Label("Input File Fragment");
    	add(lbl);
    	lbl.setBounds(55,5,200,25);
    	lbl.setFont(new Font("Arial", Font.PLAIN, 20));

    	tf = new TextField("");
    	add(tf);
    	tf.setBounds(25,35,225,25);

    	bwsbtn = new Button("Browse");
    	add(bwsbtn);
    	bwsbtn.addActionListener(this);
    	bwsbtn.setBounds(25,70,110,35);

    	idbtn = new Button("Identify");
    	add(idbtn);
    	idbtn.addActionListener(this);
    	idbtn.setBounds(155,70,110,35);

    }

	public void actionPerformed(ActionEvent e){
    	//Handle browse event
    	try{
    		if(e.getSource() == bwsbtn){
    			JFileChooser fc = new JFileChooser();
    			fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
    			int returnVal = fc.showOpenDialog(GUI.this);
    			if(returnVal == JFileChooser.APPROVE_OPTION){
    			selectedFile = fc.getSelectedFile();
    			path = selectedFile.getAbsolutePath();
    			tf.setText(selectedFile + ".");
    		}else{
    			JOptionPane.showMessageDialog(null, "Please choose a file.");
    		}
    	}

    		//Handle identify button
    		if(e.getSource() == idbtn){
    			if(tf.getText().equals("")){
    				JOptionPane.showMessageDialog(null,"Please select fragment file.");
    			}else{

    				try{

    				long startpx = 0;
    				long startpy = 0;
    				long readSize = 2048;
    				String temp = "";

    				while(true){
    				StringResult sr = new StringResult();

    				String x = LCSf.readFile("D:\\TA\\Skripsi\\PDF.txt", startpx, readSize);
    				String y = LCSf.GenStr2(selectedFile, startpy, readSize);
    				temp = temp + sr.Compare(x, y);

    				if(sr.posx == -1 && sr.posy == -1){
    					startpx = startpx + readSize;
    					startpy = startpy + readSize;
    				}

    				else{
    					startpx += sr.posx + 1;
    					startpy += sr.posy + 1;
    				}

    				System.out.println(sr.posx);

    				if(startpx > "D:\\TA\\Skripsi\\PDF.txt".length()){
    					System.out.println("LCS: " + temp);
    					System.out.println("Length: " + temp.length());
    					break;
    				}
    				if(startpy > selectedFile.length()){
    					System.out.println("LCS: " + temp);
    					System.out.println("Length: " + temp.length());
    					break;
    				}
    				}

    				}finally{
    	    		}
    			}
    			}
    	}catch(IOException f){

    	}
    	finally{

    	}
	}

	public static void main (String[] args){
		GUI app = new GUI();
	}
}