Implimenting GUI.

[Shhailesh Joshi]

Hey This is my simple code for calculating interest.i also created GUI code using GuiDFrame software.Now problem is that how to implement the code in GUI code.
This is the base code.

import java.io.*;
class interest
{
public static void main(String args[]) throws IOException
{
float A,I,P,R,TINTEREST=0,temp1=0,EMI=0,DEDUCT,Y,TIM;
int i;
System.out.println("Enter Amount:");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
A = Float.parseFloat(br.readLine());
System.out.println("Enter Interest:");
I = Float.parseFloat(br.readLine());
System.out.println("Enter Time span In Years:");
Y = Float.parseFloat(br.readLine());
TIM=Y*12;
for(i=0;i<=Y;i++)
{
DEDUCT=A-EMI;
TINTEREST=(DEDUCT/100*I);
EMI=A/TIM;
}
System.out.println("Total Interest Of Ruppes "+A+" For "+Y+" Years Is "+TINTEREST*Y+" Rupees.");
}
}

And this is the GUI code generated by GuidFrame software.

//Code Genarated by JGuiD
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class GuiDFrame extends JFrame
{
    JLabel untitled_1;
     JLabel untitled_2;
     JLabel untitled_3;
     JLabel untitled_4;
     JButton untitled_5;
     JTextField untitled_6;
     JTextField untitled_7;
     JTextField untitled_9;
     
   public GuiDFrame()
   {
     getContentPane().setLayout(null);
     setupGUI();
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
   void setupGUI()
   {
     	untitled_1 = new JLabel();
	untitled_1.setLocation(128,0);
	untitled_1.setSize(109,25);
	untitled_1.setText("Interest Calculator");
	getContentPane().add(untitled_1);

	untitled_2 = new JLabel();
	untitled_2.setLocation(0,94);
	untitled_2.setSize(87,25);
	untitled_2.setText("Enter Amount:");
	untitled_2.setToolTipText("Enter Amount Taken From Bank.");
	getContentPane().add(untitled_2);

	untitled_3 = new JLabel();
	untitled_3.setLocation(0,166);
	untitled_3.setSize(88,25);
	untitled_3.setText("Enter Interest:");
	untitled_3.setToolTipText("Specify The Interest % Of The Bank.");
	getContentPane().add(untitled_3);

	untitled_4 = new JLabel();
	untitled_4.setLocation(0,235);
	untitled_4.setSize(103,25);
	untitled_4.setText("Enter TimeSpan:");
	untitled_4.setToolTipText("Enter The TimeSpan.");
	getContentPane().add(untitled_4);

	untitled_5 = new JButton();
	untitled_5.setLocation(117,321);
	untitled_5.setSize(150,25);
	untitled_5.setText("Calculate");
	untitled_5.setToolTipText("Click");
	getContentPane().add(untitled_5);

	untitled_6 = new JTextField();
	untitled_6.setLocation(240,95);
	untitled_6.setSize(150,25);
	untitled_6.setText("");
	untitled_6.setColumns(10);
	untitled_6.setToolTipText("");
	getContentPane().add(untitled_6);

	untitled_7 = new JTextField();
	untitled_7.setLocation(240,165);
	untitled_7.setSize(150,25);
	untitled_7.setText("");
	untitled_7.setColumns(10);
	getContentPane().add(untitled_7);

	untitled_9 = new JTextField();
	untitled_9.setLocation(240,236);
	untitled_9.setSize(150,25);
	untitled_9.setText("");
	untitled_9.setColumns(10);
	getContentPane().add(untitled_9);

	setTitle("Interest Calculator");
	setSize(400,400);
	setVisible(true);
	setResizable(true);
	
	
   }
    public static void main( String args[] )
   {
     new GuiDFrame();
   }
}  

[Punit Jain]

Instead of system.out.println(), use JLabels.

System.out.println("Enter Amount:");
JLabel lbl = new JLabel("Enter Amount:");

Instead of inputstream use textboxes.

A = Float.parseFloat(br.readLine());  
JTextField tf = new JTextField();

Take all the textfield values into variables.
This should be done in a function:

TIM=Y*12;  
for(i=0;i<=Y;i++)  
{  
DEDUCT=A-EMI;  
TINTEREST=(DEDUCT/100*I);  
EMI=A/TIM;  
}  

add a button

JButton button = new JButton("Calculate");
addActionListener to button
button.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e)
            {
                //Execute when button is pressed
                //call calculate function here
               // display the result here, you can use joptionpane to display result.
            }
        });      )

i also created GUI code using GuiDFrame software

gui builders are not really helpful if you are a beginner.

[Shhailesh Joshi]

cant getting it.will you do it for me?

[Campbell Ritchie]

Shhailesh Joshi wrote:cant getting it.will you do it for me?

No.

That calculating interest method looks untidy. Why are you using floatss in the first place, and why have you got so many local variables. You cannot get that to work with the GUI because it is not an interest-calculating class. It is a procedure. You need to get rid of that procedure and create a class which can calculate interest. You might call it Loan. Get it working from the command line and only consider the GUI after you have got that working correctly.

[Shhailesh Joshi]

thanks punit,campbell.