Java swing program to take HTML input and apply regex on it

package client;

import java.awt.Container;
import java.awt.Desktop;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

class ResponseTimeExtractor extends JFrame {

private static final long serialVersionUID = 1L;

String emailableLocation, textLocation;

JButton startConversion, openFile;
JTextField emailableTextField, textTextField;
JLabel emailableLabel, textLabel, result;

ResponseTimeExtractor() {

JFrame frame = new JFrame("Response Time");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600, 200);
Container container = frame.getContentPane();
container.setLayout(new FlowLayout(FlowLayout.CENTER));

/** Setting the UI Content **/
// Location of the HTML file on system
emailableLabel = new JLabel("HTML File Location");

// Location to create the corresponding Text File on system
textLabel = new JLabel("Text File Location");

emailableTextField = new JTextField(40);
textTextField = new JTextField(40);
result = new JLabel("");
startConversion = new JButton("Start Extraction");
openFile = new JButton("Open Text File");

// Add the components to container
container.add(emailableLabel);
container.add(emailableTextField);
container.add(textLabel);
container.add(textTextField);
container.add(startConversion);
container.add(result);
container.add(openFile);
frame.setVisible(true);

// Add action event to start extraction of response time from html file
startConversion.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
emailableLocation = emailableTextField.getText();
textLocation = textTextField.getText();
try {
result.setText(" ");
getApi(emailableLocation, textLocation);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}

});

// Action event to open the created text file
openFile.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
openTextFile(textLocation);
}

});

}

public static void main(String args[]) {

new ResponseTimeExtractor();

}

/**
* This method opens the create Text File
*
* @param textLocation
*/
private void openTextFile(String textLocation) {
// TODO Auto-generated method stub
if (Desktop.isDesktopSupported()) {
try {
Desktop.getDesktop().open(new File(textLocation));
} catch (IOException e) { /* TODO: error handling */
}
} else { /* TODO: error handling */
result.setText("Cannot Open the file");
}
}

/**
* This method extracts response time from the html file and writes it to
* the txt file
*
* @param emailableLocation
* @param textLocation
* @throws IOException
*/
@SuppressWarnings("deprecation")
public void getApi(String emailableLocation, String textLocation)
throws IOException {

try {

result.setText("Error Occured!!!");
// HTML file handling
File myhtmlFile = new File(emailableLocation);
FileInputStream fileinput = null;
BufferedInputStream mybuffer = null;
DataInputStream datainput = null;

fileinput = new FileInputStream(myhtmlFile);
mybuffer = new BufferedInputStream(fileinput);
datainput = new DataInputStream(mybuffer);

// Map to store API name and corresponding response time
HashMap<String, Integer> hm = new HashMap<String, Integer>();

// Read from HTML file for Response Time of all the API's
while (datainput.available() != 0) {
String data = datainput.readLine();
Pattern regex = Pattern.compile("(--)(.*)(msec)");
Matcher regexMatcher = regex.matcher(data);

if (regexMatcher.find()) {
String string = regexMatcher.group();
System.out.println(string);
if(string.length()>100)
continue;
else{
String[] strArr = string.split(":");
String apiName = strArr[0].replaceFirst("--", "").trim();
String timeMsec = strArr[1].trim().replace("msec", "");

System.out.println(apiName);
System.out.println(timeMsec);
if (!hm.containsKey(apiName)) {
if(timeMsec.endsWith("msec")){
int time = Integer.parseInt(timeMsec);
hm.put(apiName, time);
}
}

else {
int timeNew = Integer.parseInt(timeMsec);
int timeOld = hm.get(apiName);
if (timeNew > timeOld) {
hm.put(apiName, timeNew);
}
}
}
}
}

// Text File Handling
FileWriter fstream = new FileWriter(textLocation);
BufferedWriter out = new BufferedWriter(fstream);

// Write data to Text File
Set<String> set = hm.keySet();
for (String key : set) {
out.write(key + ": " + hm.get(key) + " ms");
out.newLine();
}

// UI alert for successful read & write operation
result.setText("File Created Successfully!!!");

// Closing the streams
out.close();
fileinput.close();
mybuffer.close();
datainput.close();

} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}