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how to create currency converter

 
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helllllllo friends

please can u help me????

i have project about creating currency converter using jGRASP i made the enterface using jframebuilder but i dont know how to complete it...i really need ur help friends :'(

 
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Well how are we supposed to help you if we have no idea what your code is or what you need to help you "complete it"

 
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hi friend
i wanna show u my code but i dont know where i should put it

 
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hi friend

here is my project plz run it

Attachments jFrame.java (9.33KB)
 
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hi friend
i wanna show u my code but i dont know where i should put it

in your post, surrounded by Code tags

 
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/****************************************************************/ 
 /*                      jFrame                              */ 
 /*                                                              */ 
 /****************************************************************/ 
import java.awt.*; 
 import java.awt.event.*; 
 import javax.swing.*; 
 import javax.swing.event.*;
  import java.io.*;
 
 /** 
  * Summary description for jFrame 
  * 
  */ 
 public class jFrame extends JFrame 
 { 
   // Variables declaration 
   private JLabel jLabel1; 
   private JLabel jLabel2; 
   private JTextField jTextField1; 
   private JTextField jTextField2; 
   private JList jList3; 
   private JScrollPane jScrollPane1; 
   private JList jList4; 
   private JScrollPane jScrollPane2; 
   private JButton jButton1; 
   private JButton jButton2; 
   private JPanel contentPane; 
   // End of variables declaration 
  
  
   public jFrame() 
   { 
      super(); 
      initializeComponent(); 
      // 
      // TODO: Add any constructor code after initializeComponent call 
      // 
  
      this.setVisible(true); 
   } 
  
   /** 
    * This method is called from within the constructor to initialize the form. 
    * WARNING: Do NOT modify this code. The content of this method is always regenerated 
    * by the Windows Form Designer. Otherwise, retrieving design might not work properly. 
    * Tip: If you must revise this method, please backup this GUI file for JFrameBuilder 
    * to retrieve your design properly in future, before revising this method. 
    */ 
   private void initializeComponent() 
   { 
      jLabel1 = new JLabel(); 
      jLabel2 = new JLabel(); 
      jTextField1 = new JTextField(); 
      jTextField2 = new JTextField(); 
      jScrollPane1 = new JScrollPane(); 
      jScrollPane2 = new JScrollPane(); 
      jButton1 = new JButton(); 
      jButton2 = new JButton(); 
      contentPane = (JPanel)this.getContentPane(); 
  
      // 
      // jLabel1 
      // 
      jLabel1.setText("From:"); 
      // 
      // jLabel2 
      // 
      jLabel2.setText("To:"); 
      // 
      // jTextField1 
      // 
      jTextField1.addActionListener(new ActionListener() { 
         public void actionPerformed(ActionEvent e) 
         { 
            jTextField1_actionPerformed(e); 
         } 
			
  
      }); 
      // 
      // jTextField2 
      // 
      jTextField2.addActionListener(new ActionListener() { 
         public void actionPerformed(ActionEvent e) 
         { 
            jTextField2_actionPerformed(e); 
         } 
  
     }); 
      // 
      // jList3
		
		    
                String[] listcountriescurrency = { "USD:Utd States$", "EURO:Euro", "GBP:Utd Kingdom Pnd", "JPY:Japan Yen",
               "CAD:Canada$", "AUD:Australia$", "CHF:Switzerland Fr", "AED:Utd Arab Emirates Dhs" };
            
              Container contentpane;


               contentpane = getContentPane();
               contentpane.setLayout(new FlowLayout());
               jList3 = new JList(listcountriescurrency);
                jList3.setSelectedIndex(0);
               jList3.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 
      // 
      jList3.addListSelectionListener(new ListSelectionListener() { 
         public void valueChanged(ListSelectionEvent e) 
         { 
            jList3_valueChanged(e);
            
                        
            
         } 
  
      }); 
      // 
      // jScrollPane1 
      // 
      jScrollPane1.setViewportView(jList3); 
      // 
      // jList4 
      
               contentpane = getContentPane();
               contentpane.setLayout(new FlowLayout());
               jList4 = new JList(listcountriescurrency);
                jList4.setSelectedIndex(0);
               jList4.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 

      // 
      jList4.addListSelectionListener(new ListSelectionListener() { 
         public void valueChanged(ListSelectionEvent e) 
         { 
            jList4_valueChanged(e); 
         } 
  
      }); 
      // 
      // jScrollPane2 
      // 
      jScrollPane2.setViewportView(jList4); 
      // 
      // jButton1
      
      // 
      jButton1.setText("Convert"); 
      jButton1.addActionListener(new ActionListener() { 
         public void actionPerformed(ActionEvent e) 
         { 
            jButton1_actionPerformed(e);
             
         } 
  
      }); 
      // 
      // jButton2 
      // 
      jButton2.setText("Close"); 
      jButton2.addActionListener(new ActionListener() { 
         public void actionPerformed(ActionEvent e) 
         { 
            jButton2_actionPerformed(e);
            
            String message = "Thank you for using Our Currency Convertor";
            
               JOptionPane.showMessageDialog(null,message);
               System.exit(0);

 
         } 
  
      }); 
      // 
      // contentPane 
      // 
      contentPane.setLayout(null); 
      addComponent(contentPane, jLabel1, 9,17,60,18); 
      addComponent(contentPane, jLabel2, 178,19,60,18); 
     addComponent(contentPane, jTextField1, 4,225,89,22); 
      addComponent(contentPane, jTextField2, 186,226,80,22); 
      addComponent(contentPane, jScrollPane1, 7,42,152,166); 
      addComponent(contentPane, jScrollPane2, 173,42,154,167); 
      addComponent(contentPane, jButton1, 98,224,83,25); 
      addComponent(contentPane, jButton2, 270,225,73,25); 
      // 
      // jFrame 
      // 
      this.setTitle("Currency Converter Application"); 
      this.setLocation(new Point(29, 3)); 
      this.setSize(new Dimension(356, 287)); 
   } 
  
   /** Add Component Without a Layout Manager (Absolute Positioning) */ 
   private void addComponent(Container container,Component c,int x,int y,int width,int height) 
   { 
      c.setBounds(x,y,width,height); 
      container.add(c); 
   } 
  
   // 
   // TODO: Add any appropriate code in the following Event Handling Methods 
   // 
   private void jTextField1_actionPerformed(ActionEvent e) 
   { 
      System.out.println("\njTextField1_actionPerformed(ActionEvent e) called."); 
      // TODO: Add any handling code here 
		
		
  
   } 
  
   private void jTextField2_actionPerformed(ActionEvent e) 
   { 
      System.out.println("\njTextField2_actionPerformed(ActionEvent e) called."); 
     // TODO: Add any handling code here 
  
 
          } 
  
   private void jList3_valueChanged(ListSelectionEvent e) 
   { 
      System.out.println("\njList3_valueChanged(ListSelectionEvent e) called."); 
      if(!e.getValueIsAdjusting()) 
      { 
         Object o = jList3.getSelectedValue(); 
         System.out.println(">>" + ((o==null)? "null" : o.toString()) + " is selected."); 
         // TODO: Add any handling code here for the particular object being selected 
          
      } 
   } 
  
   private void jList4_valueChanged(ListSelectionEvent e) 
   { 
      System.out.println("\njList4_valueChanged(ListSelectionEvent e) called."); 
      if(!e.getValueIsAdjusting()) 
      { 
         Object o = jList4.getSelectedValue(); 
         System.out.println(">>" + ((o==null)? "null" : o.toString()) + " is selected."); 
         // TODO: Add any handling code here for the particular object being selected 
          
      } 
   } 
  
   private void jButton1_actionPerformed(ActionEvent e) 
   { 
      System.out.println("\njButton1_actionPerformed(ActionEvent e) called."); 
     // TODO: Add any handling code here 
  
   } 
  
   private void jButton2_actionPerformed(ActionEvent e) 
   { 
      System.out.println("\njButton2_actionPerformed(ActionEvent e) called."); 
      // TODO: Add any handling code here 
  
   } 
  
   // 
   // TODO: Add any method code to meet your needs in the following area 
   // 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
 //============================= Testing ================================// 
 //=                                                                    =// 
 //= The following main method is just for testing this class you built.=// 
 //= After testing,you may simply delete it.                            =// 
 //======================================================================// 
   public static void main(String[] args) 
   { 
      JFrame.setDefaultLookAndFeelDecorated(true); 
      JDialog.setDefaultLookAndFeelDecorated(true); 
      try 
      { 
         UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); 
      } 
      catch (Exception ex) 
      { 
         System.out.println("Failed loading L&F: "); 
         System.out.println(ex); 
      } 
      new jFrame(); 
   } 
 //= End of Testing = 
  
  
 }

i wish this is the correct way to post the codes

 
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where r u friends???????

 
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where r u friends???????

You have not asked any question yet. You just dumped some code in your post. And posting in "IM-speak" won't earn you much help either.

 
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1. you need coefficients to convert 8 currency among themselves 8*8
2. function to convert text values from JTextField to number

 
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hi friends
first of all plz excuse my bad English...Actually English is my second language..

my question is where i should put the codes that will convert the currency? and what is the codes??

to be honest i have my friend project but i don’t wanna copy it i want to understand the codes...so plz can u give me simple codes and where i should put it??

thanks friends really u r very helpful

 
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to be honest i have my friend project but i don’t wanna copy it i want to understand the codes...so plz can u give me simple codes and where i should put it??

What is the difference between you copying your friends code and you copying something we give you?

 
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am sorry maybe u misunderstood me:(


friend there is big different

Copying my friends codes is easier than getting the codes from u..
i meant by simple codes. the codes that i will understand i believe that u will explain it to me...

friend i add some codes to my project but there r errors. the doctor wants every time i convert currency the history of converting should be stored in file…

here is my new codes plz run it

/****************************************************************/
/*                      CurrencyConvertor	                            */
/*                                                              */
/****************************************************************/
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.* ;
/**
 * Summary description for CurrencyConvertor
 *
 */
public class CurrencyConvertor extends JFrame
{
	// Variables declaration
	private JLabel jLabelFrom;
	private JLabel jLabelTo;
	private JTextField jTextFieldFrom;
	private JTextField jTextFieldTo;
	private JList jListFrom;
	private JList jListTo;
	private JButton jButtonCovert;
	private JButton jButtonClose;
	private JPanel contentPane;
	// End of variables declaration


	public CurrencyConvertor()
	{
		super();
		initializeComponent();
		//
		// TODO: Add any constructor code after initializeComponent call
		//

		this.setVisible(true);
	}

	/**
	 * This method is called from within the constructor to initialize the form.
	 * WARNING: Do NOT modify this code. The content of this method is always regenerated
	 * by the Windows Form Designer. Otherwise, retrieving design might not work properly.
	 * Tip: If you must revise this method, please backup this GUI file for JFrameBuilder
	 * to retrieve your design properly in future, before revising this method.
	 */
	private void initializeComponent()
	{
		ArrayList arr;

		jLabelFrom = new JLabel();
		jLabelTo = new JLabel();
		jTextFieldFrom = new JTextField();
		jTextFieldTo = new JTextField();
		jListFrom = new JList();
		jListTo = new JList();
		jButtonCovert = new JButton();
		jButtonClose = new JButton();
		contentPane = (JPanel)this.getContentPane();

		//
		// jLabelFrom
		//
		jLabelFrom.setText("From:");
		//
		// jLabelTo
		//
		jLabelTo.setText("To:");
		//
		// jTextFieldFrom
		//
		jTextFieldFrom.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				jTextFieldFrom_actionPerformed(e);
			}

		});
		//
		// jTextFieldTo
		//
		jTextFieldTo.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				jTextFieldTo_actionPerformed(e);
			}

		});
		//
		// jListFrom
		//
		String[]ListFrom = new String[8];
		ListFrom[0]="USD:Utd States $";
		ListFrom[1]="EURO:Euro";
		ListFrom[2]="GBP:Utd Kingdom Pnd";
		ListFrom[3]="JPY:Japan Yen";
		ListFrom[4]="CAD:Canada $";
		ListFrom[5]="AUD:Australia $";
		ListFrom[6]="CHF:Switzerland Fr";
		ListFrom[7]="AED:Utd Arab Emirates Dhs";
		Container contentpane;
          contentpane = getContentPane();
          contentpane.setLayout(new FlowLayout());
          jListFrom = new JList(ListFrom);
          jListFrom.setSelectedIndex(0);
          jListFrom.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
	
		jListFrom.addListSelectionListener(new ListSelectionListener() {
			public void valueChanged(ListSelectionEvent e)
			{
				jListFrom_valueChanged(e);
			}

		});
		//
		// jListTo
		//
		String[]ListTo = new String[8];
		ListTo[0]="USD:Utd States $";
		ListTo[1]="EURO:Euro";
		ListTo[2]="GBP:Utd Kingdom Pnd";
		ListTo[3]="JPY:Japan Yen";
		ListTo[4]="CAD:Canada $";
		ListTo[5]="AUD:Australia $";
		ListTo[6]="CHF:Switzerland Fr";
		ListTo[7]="AED:Utd Arab Emirates Dhs";

          contentpane = getContentPane();
          contentpane.setLayout(new FlowLayout());
          jListTo = new JList(ListTo);
          jListTo.setSelectedIndex(0);
          jListTo.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		
		jListTo.addListSelectionListener(new ListSelectionListener() {
			public void valueChanged(ListSelectionEvent e)
			{
				jListTo_valueChanged(e);
			}

		});
		//
		// jButtonCovert
		//
		jButtonCovert.setText("Convert");
		jButtonCovert.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				jButtonCovert_actionPerformed(e);
			}

		});
		//
		// jButtonClose
		//
		jButtonClose.setText("Close");
		jButtonClose.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e)
			{
				jButtonClose_actionPerformed(e);
		
			}

		});
		//
		// contentPane
		//
		contentPane.setLayout(null);
		addComponent(contentPane, jLabelFrom, 17,25,60,18);
		addComponent(contentPane, jLabelTo, 227,27,60,18);
		addComponent(contentPane, jTextFieldFrom, 13,260,100,26);
		addComponent(contentPane, jTextFieldTo, 222,258,100,29);
		addComponent(contentPane, jListFrom, 13,50,196,184);
		addComponent(contentPane, jListTo, 228,51,191,185);
		addComponent(contentPane, jButtonCovert, 124,258,83,28);
		addComponent(contentPane, jButtonClose, 338,258,83,28);
		//
		// CurrencyConvertor
		//
		this.setTitle("CurrencyConvertor - extends JFrame");
		this.setLocation(new Point(0, 2));
		this.setSize(new Dimension(455, 344));
	}

	/** Add Component Without a Layout Manager (Absolute Positioning) */
	private void addComponent(Container container,Component c,int x,int y,int width,int height)
	{
		c.setBounds(x,y,width,height);
		container.add(c);
	}

	//
	// TODO: Add any appropriate code in the following Event Handling Methods
	//
	private void jTextFieldFrom_actionPerformed(ActionEvent e)
	{
		System.out.println("\njTextFieldFrom_actionPerformed(ActionEvent e) called.");
		// TODO: Add any handling code here

	}

	private void jTextFieldTo_actionPerformed(ActionEvent e)
	{
		System.out.println("\njTextFieldTo_actionPerformed(ActionEvent e) called.");
		// TODO: Add any handling code here

	}

	private void jListFrom_valueChanged(ListSelectionEvent e)
	{
		System.out.println("\njListFrom_valueChanged(ListSelectionEvent e) called.");
		if(!e.getValueIsAdjusting())
		{
			Object o = jListFrom.getSelectedValue();
			System.out.println(">>" + ((o==null)? "null" : o.toString()) + " is selected.");
			// TODO: Add any handling code here for the particular object being selected
			
		}
	}

	private void jListTo_valueChanged(ListSelectionEvent e)
	{
		System.out.println("\njListTo_valueChanged(ListSelectionEvent e) called.");
		if(!e.getValueIsAdjusting())
		{
			Object o = jListTo.getSelectedValue();
			System.out.println(">>" + ((o==null)? "null" : o.toString()) + " is selected.");
			// TODO: Add any handling code here for the particular object being selected
			
		}
	}

	private void jButtonCovert_actionPerformed(ActionEvent e)
	{
		System.out.println("\njButtonCovert_actionPerformed(ActionEvent e) called.");
		// TODO: Add any handling code here

            jTextFieldFrom.getText();
				int jTextFieldFrom = Integer.ParseInt();
				
				String jTextFieldFrom = "RATES.txt";
            String content = new String ("");

	         FileInputStream file = new FileInputStream(jTextFieldFrom);
            file.read();
				
				
				
				
				jTextFieldTo.getText();
				int jTextFieldTo = Integer.ParseInt();
				
				String jTextFieldFrom = "ConversionLog.txt";
            FileOutputStream file = new FileOutputStream(jTextFieldFrom);
            file.write();
				
				
	}


	private void jButtonClose_actionPerformed(ActionEvent e)
	{
		System.out.println("\njButtonClose_actionPerformed(ActionEvent e) called.");
		// TODO: Add any handling code here
           
			  String message = "Thank you for using Our Currency Convertor";
            
           JOptionPane.showMessageDialog(null,message);
           System.exit(0);
	}

	//
	// TODO: Add any method code to meet your needs in the following area
	//






























 

//============================= Testing ================================//
//=                                                                    =//
//= The following main method is just for testing this class you built.=//
//= After testing,you may simply delete it.                            =//
//======================================================================//
	public static void main(String[] args)
	{
		JFrame.setDefaultLookAndFeelDecorated(true);
		JDialog.setDefaultLookAndFeelDecorated(true);
		try
		{
			UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
		}
		catch (Exception ex)
		{
			System.out.println("Failed loading L&F: ");
			System.out.println(ex);
		}
		new CurrencyConvertor();
	}
//= End of Testing =


}
 
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//button convert:

String text = jTextFieldFrom.getText();
        int valueFromTextField = Integer.parseInt(text);
// calculate conversion
// write to jTextFieldTo
// write one row of history to output stream

Streams input & output you need open in CurrencyConvertor constructor , close if you exited from program.
Interesting is , what you have in "RATES.txt". You need properly read all info from RATES.txt.

 
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hello friends,

i just want to thank u all 4 helping me...
i submited my project today but there r still some errors in input output files...
as so as i get the right codes from the doctor i will post it 4 u friends to get benefit :) plz wish 4 me my final exams will start next week.....

 
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Can you post the codes up sooon? I neeed some help too.

 
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Ask a question in a new thread if you need some help. Note that "help" doesn't mean giving you code to turn in for your assignment.

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