Currency Converter.pdf 3i6v6w

Micro-Project Report Currency Converter 1.0

Rationale:

Different countries use different currency, and there is daily variation in these currencies relative to one another. Those who transfer money from one country to another (one currency to another) must be updated with the latest currency exchange rates in the market. Such application can be used by any , but it is mainly useful for business, shares, and finance related areas where money transfer and currency exchange takes place on a daily basis. In this currency converter app, s are provided with an option to select the type of conversion, i.e. from “this” currency to “that” currency. This simple feature allows s to enter amount to be converted (say currency in Dollars), and display the converted amount (say currency in Euro). it is useful tool which gives us the value of certain amount of the one currency to be converted in to different currency. It is also regarded as the value of one country currency in term of another currency.

2.0

Aims/Benefits of the Micro-Project: Develop the project of Currency converter in Advance java.

3.0 Course Outcomes Addressed (Add to the earlier list if more COs are addressed): 1) Develop program using GUI Framework. 2) Handle events of AWT and swing component. 3) Develop java program using networking concepts.

4.0

Literature Review: JSON:JSON (JavaScript Object Notation) is a lightweight, text-based, languageindependent data exchange format that is easy for humans and machines to read and write. JSON can represent two structured types: objects and arrays. An object is an unordered collection of zero or more name/value pairs. An array is an ordered sequence of zero or more values. The values can be strings, numbers, Booleans, null, and these two structured types.

Below is a simple example from Wikipedia that shows JSON representation of an object that describes a person. The object has string values for first name and last name, a number value for age, an object value representing the person’s address, and an array value of phone number objects.

JSON Processing in Java: The Java API for JSON Processing JSON.simple is a simple Java library that allow parse, generate, transform, and query JSON. Getting Started: You need to the json-simple-1.1 jar and put it in your CLASSPATH before compiling and running the below example codes. • For importing jar in IDE like eclipse, refer here. • If you are using maven you may use the following maven link https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple/1.1.1 JSON-Simple API: It provides object models for JSON object and array structures. These JSON structures are represented as object models using types JSONObject and

JSON Object: JSON object holds key/value pair. Each key is represented as a string in JSON and value can be of any type. The keys and values are separated by colon. Each key/value pair is separated by comma. The curly bracket {} represents JSON object. JsonObject getJsonObject(String name) Returns the object value to which the specified name is mapped. This is a convenience method for (JsonObject)get(name) to get the value.

HttpURLConnection: Each HttpURLConnection instance is used to make a single request but the underlying network connection to the HTTP server may be transparently shared by other instances. Calling the close() methods on the InputStream or OutputStream of an HttpURLConnection after a request may free network resources associated with this instance but has no effect on any shared persistent connection. Calling the disconnect() method may close the underlying socket if a persistent connection is otherwise idle at that time.

5.0

Actual Methodology Followed: Call_me(String str1,String str2):-

This function return the double value of currency. First create a URL object for locate and retrieve data of currency. Firstly create the object HttpURLConnection and then, data is retrieved in HttpURLConnection object from URL object. The data is retrieved using getInputStream() . The binary data collected into InputStream and then by using BufferedReader the binary data is converted into string format and by using append method the data is appended in StringBuffered object. JSONObject is used to convert the JSON code into the java code using toString(). Methods used:1) public int getSelectedIndex() Returns the first item in the list that matches the given item. The result is not always defined if the JComboBox allows selected items that are not in the list. Returns -1 if there is no selected item or if the specified an item which is not in the list. 2) public String getText() Returns the text contained in this TextComponent. If the underlying document is null, will give a NullPointerException. Note that text is not a bound property, so no PropertyChangeEvent is fired when it changes. To listen for changes to the text, use DocumentListener. 3) Layout used in project:GroupLayout is a LayoutManager that hierarchically groups components in order to position them in a Container. GroupLayout is intended for use by builders, but may be hand-coded as well. Grouping is done by instances of the Group class. GroupLayout s two types of groups. A sequential group positions its child elements sequentially, one after another. A parallel group aligns its child elements in one of four ways. Each group may contain any number of elements, where an element is a Group, Component, or gap. A gap can be thought of as an invisible component with a minimum, preferred and maximum size. In addition GroupLayout s a preferred gap, whose value comes from LayoutStyle.

Code:import java.awt.Color; import java.awt.EventQueue; import java.awt.Font; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener;

import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.net.UnknownHostException; import javax.swing.GroupLayout; import javax.swing.GroupLayout.Alignment; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.J; import javax.swing.JTextField; import javax.swing.LayoutStyle.ComponentPlacement; import javax.swing.SwingConstants; import org.json.JSONObject; public class CurrencyConvertor { private JFrame frmCurrencyConvertor; private JTextField textField; private JTextField textField_1; String []CountryName = {"United Arab Emeriates dirham","Argentine peso","Australian dollar","Bulgarian lev","Brazilian real ","Bahamian doller","Canadian doller","Swiss franc","Chilean peso ","Chinese yuan","Colombian peso","Czech koruna","Denmark","Dominican peso","Egyptian pound"," euro","Fijian doller","British pound","Guatemalan quetzal","Hong Kong dollar","Croatian kuna","Hungarian forint","Indonesian rupiah","Israeli new shekel","Indian rupees","Icelandic krona","Japanese yen","South Korean won","Kazakhstani tenge","Mexican peso","Malaysian ringgit","Norwegian krone","New Zealand Dollar","Panamanian balboa","Peruvian sol","Philippine peso","Pakistani rupees","Polish zloty","Paraguayan guarani","Romanian leu","Russian ruble","Saudi riyal","Swedish Krona","Singapore dollar","Thai baht","Turkish lira","New Taiwan dollar","Ukraine hryvnia","United States dollar","Uruguayan peso","Vietnamese domg","South African rand"}; String []CountryCode= {"AED","ARS","AUD","BGN","BRL","BSD", "CAD","CHF","CLP","CNY","COP","CZK", "DKK","DOP","EGP","EUR","FJD","GBP",

"GTQ","HKD","HRK","HUF","IDR","ILS", "INR","ISK","JPY","KRW","KZT","MXN", "MYR","NOK","NZD","PAB","PEN","PHP", "PKR","PLN","PYG","RON","RUB","SAR", "SEK","SGD","THB","TRY","TWD","UAH", "USD","UYU","VND","ZAR"}; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { CurrencyConvertor window = CurrencyConvertor(); window.frmCurrencyConvertor.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } //connection public static double call_me(String from,String to) throws Exception { String url = "https://api.exchangerate-api.com/v4/latest/"+from; URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); // optional default is GET con.setRequestMethod("GET"); //add request header con.setRequestProperty("-Agent", "Mozilla/5.0"); int responseCode = con.getResponseCode(); System.out.println("\nSending 'GET' request to URL : " + url); System.out.println("Response Code : " + responseCode); BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer();

new

while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); JSONObject myresponse = new JSONObject(response.toString()); JSONObject myresponse_obj = new JSONObject(myresponse.getJSONObject("rates").toString()); double d = myresponse_obj.getDouble(""+to); return d; } /** * Create the application. */ public CurrencyConvertor() { initialize(); } /** * Initialize the contents of the frame. */ private void initialize() { frmCurrencyConvertor = new JFrame(); frmCurrencyConvertor.setForeground(Color.WHITE); frmCurrencyConvertor.setTitle("Currency Convertor"); frmCurrencyConvertor.setBounds(100, 100, 723, 488); frmCurrencyConvertor.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); GridBagLayout gridBagLayout = new GridBagLayout(); gridBagLayout.columnWidths = new int[]{678, 0}; gridBagLayout.rowHeights = new int[]{40, 265, 0}; gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE}; gridBagLayout.rowWeights = new double[]{0.0, 1.0, Double.MIN_VALUE}; frmCurrencyConvertor.getContentPane().setLayout(gridBagLayout); JLabel lblCurrencyConvertor = new JLabel("Currency Converter"); lblCurrencyConvertor.setHorizontalAlignment(SwingConstants.CENTER); lblCurrencyConvertor.setFont(new Font("Arial Black", Font.BOLD, 28)); GridBagConstraints gbc_lblCurrencyConvertor = new GridBagConstraints(); gbc_lblCurrencyConvertor.anchor = GridBagConstraints.NORTH; gbc_lblCurrencyConvertor.fill = GridBagConstraints.HORIZONTAL; gbc_lblCurrencyConvertor.insets = new Insets(0, 0, 5, 0);

gbc_lblCurrencyConvertor.gridx = 0; gbc_lblCurrencyConvertor.gridy = 0; frmCurrencyConvertor.getContentPane().add(lblCurrencyConvertor,gbc_lblCurrency Convertor); J = new J(); GridBagConstraints gbc_ = new GridBagConstraints(); gbc_.fill = GridBagConstraints.BOTH; gbc_.gridx = 0; gbc_.gridy = 1; frmCurrencyConvertor.getContentPane().add(, gbc_); JLabel lblNewLabel = new JLabel("Select Currency"); lblNewLabel.setFont(new Font("Times New Roman", Font.BOLD, 20)); lblNewLabel.setHorizontalAlignment(SwingConstants.LEFT); JComboBox FromConvert = new JComboBox(CountryName); JComboBox ToConvert = new JComboBox(CountryName); textField = new JTextField(); textField_1 = new JTextField(); textField_1.setColumns(10); textField.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { try { int convert = Integer.parseInt(textField.getText()); int selectIndex = FromConvert.getSelectedIndex(); int selectIndex1 = ToConvert.getSelectedIndex(); String code1 = CountryCode[selectIndex]; String code2 = CountryCode[selectIndex1]; try { double val = CurrencyConvertor.call_me(code1,code2); double f = val*convert; textField_1.setText(""+f); } catch (Exception e) { e.printStackTrace(); }

} catch(NumberFormatException err) { textField_1.setText("Please amount"); }

enter

valid

} });

textField.setColumns(9); JLabel lblCurrencyToConvert = new JLabel("Currency To Convert In"); lblCurrencyToConvert.setHorizontalAlignment(SwingConstants.LEFT); lblCurrencyToConvert.setFont(new Font("Times New Roman", Font.BOLD, 20)); JButton btnConvert = new JButton("Convert"); btnConvert.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { int convert = Integer.parseInt(textField.getText()); int selectIndex = FromConvert.getSelectedIndex(); int selectIndex1 = ToConvert.getSelectedIndex(); String code1 = CountryCode[selectIndex]; String code2 = CountryCode[selectIndex1]; try { double val = CurrencyConvertor.call_me(code1,code2); double f = val*convert; textField_1.setText(""+f); } catch (Exception eg) { eg.printStackTrace(); } } catch(NumberFormatException err) { textField_1.setText("Please enter valid amount"); }

} }); JButton btnReset = new JButton("Reset"); btnReset.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { textField.setText(""); textField_1.setText(""); ToConvert.setSelectedIndex(0); FromConvert.setSelectedIndex(0); } }); JButton btnExit = new JButton("Exit"); btnExit.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { System.exit(0); } });

JLabel lblNewLabel_1 = new JLabel("Enter the Amount"); lblNewLabel_1.setFont(new Font("Times New Roman", Font.BOLD, 20)); JLabel lblResult = new JLabel("Result"); lblResult.setFont(new Font("Times New Roman", Font.BOLD, 20)); GroupLayout gl_ = new GroupLayout(); gl_.setHorizontalGroup(gl_.createParallelGroup(Alignment.LEADING) .addGroup(gl_.createSequentialGroup().addGap(67) .addGroup(gl_.createParallelGroup(Alignment.LEADING) .addGroup(gl_.createSequentialGroup().addComponent(btnConvert, GroupLayout.PREFERRED_SIZE, 106, GroupLayout.PREFERRED_SIZE).addGap(141) .addComponent(btnReset,GroupLayout.PREFERRED_SIZE,103, GroupLayout.PREFERRED_SIZE).addGap(86).addComponent(btnExit, GroupLayout.PREFERRED_SIZE, 106, GroupLayout.PREFERRED_SIZE))

.addGroup(gl_.createSequentialGroup() .addGroup(gl_.createParallelGroup(Alignment.LEADING) .addGroup(gl_.createParallelGroup(Alignment.LEADING) .addGroup(gl_.createSequentialGroup() .addComponent(lblNewLabel, GroupLayout.DEFAULT_SIZE, 360, Short.MAX_VALUE).addPreferredGap(ComponentPlacement.RELATED)) .addComponent(lblNewLabel_1) .addComponent(FromConvert, GroupLayout.PREFERRED_SIZE, 202, GroupLayout.PREFERRED_SIZE)) .addGroup(gl_.createSequentialGroup() .addComponent(textField, GroupLayout.PREFERRED_SIZE, 193, GroupLayout.PREFERRED_SIZE).addGap(173))) .addGroup(gl_.createParallelGroup(Alignment.LEADING) .addComponent(lblCurrencyToConvert, GroupLayout.PREFERRED_SIZE, 204, GroupLayout.PREFERRED_SIZE) .addComponent(ToConvert, GroupLayout.PREFERRED_SIZE, 185, GroupLayout.PREFERRED_SIZE) .addComponent(textField_1, GroupLayout.PREFERRED_SIZE, 157, GroupLayout.PREFERRED_SIZE).addComponent(lblResult)).addGap(70))) .addContainerGap()) ); gl_.setVerticalGroup( gl_.createParallelGroup(Alignment.LEADING) .addGroup(gl_.createSequentialGroup().addGap(42) .addGroup(gl_.createParallelGroup(Alignment.BASELINE) .addComponent(lblNewLabel) .addComponent(lblCurrencyToConvert)) .addPreferredGap(ComponentPlacement.UNRELATED) .addGroup(gl_.createParallelGroup(Alignment.LEADING) .addComponent(FromConvert, GroupLayout.PREFERRED_SIZE, 36, GroupLayout.PREFERRED_SIZE) .addComponent(ToConvert, GroupLayout.PREFERRED_SIZE, 36, GroupLayout.PREFERRED_SIZE)).addGap(18) .addGroup(gl_.createParallelGroup(Alignment.BASELINE) .addComponent(lblNewLabel_1).addComponent(lblResult)) .addPreferredGap(ComponentPlacement.RELATED) .addGroup(gl_.createParallelGroup(Alignment.BASELINE) .addComponent(textField, GroupLayout.PREFERRED_SIZE, 36, GroupLayout.PREFERRED_SIZE).addComponent(textField_1, GroupLayout.PREFERRED_SIZE, 34, GroupLayout.PREFERRED_SIZE)).addGap(53) .addGroup(gl_.createParallelGroup(Alignment.BASELINE)

.addComponent(btnConvert, GroupLayout.PREFERRED_SIZE, 40, GroupLayout.PREFERRED_SIZE).addComponent(btnReset, GroupLayout.PREFERRED_SIZE, 38, GroupLayout.PREFERRED_SIZE) .addComponent(btnExit, GroupLayout.PREFERRED_SIZE, 36, GroupLayout.PREFERRED_SIZE)) .addContainerGap(114, Short.MAX_VALUE)) ); .setLayout(gl_); } }

6.0

Actual Resources Used (Mention the actual resources used):

S. No. 1 2 3 4 5

7.0

Name of Resource/material Laptop

Specifications I5 , 8GB ram

1

Java Java Json Eclipse

JDK 1.8 JRE1.8 Json1.1 2019

-

Outputs of the Micro-Projects: 1) Start-up Page:

Qty

Remarks

2) Selecting Cuurency:

3) Result:

4) Reset Application:

5) Exit Application:

8.0

Applications of this Micro-Project: 1) Banking System. 2) Share Market. 3) E-commerce website. **************

INDEX Sr. No

Topic

Page No

1.0

Rationale

1

2.0

Aim and Benefits of micro project

2

3.0

Course Outcomes

3

4.0

Literature Review

4

5.0

Actual Methodology Followed

5

6.0

Actual Resources Used

8

7.0

Output

9

8.0

Learning Outcome of Micro Project

11

9.0

Application of Micro Project

12

10.0

Conclusion

13