Java applet program for interest rate calculation

Write a Java program that computes the payment of a loan based on the amount of the loan, the interest rate and the number of months. It takes one parameter from the browser: Monthly rate;if true, the interest rate is per month; Otherwise the interest rate is annual.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="Loan" width=300 height=300>
</applet>
*/
public class Loan extends Applet
implements ActionListener,ItemListener
{
	double p,r,n,total,i;
	String param1;
	boolean month;
	Label l1,l2,l3,l4;
	TextField t1,t2,t3,t4;
	Button b1,b2;
	CheckboxGroup cbg;
	Checkbox c1,c2;
	String str;
	public void init()
	{
		l1=new Label("Balance Amount",Label.LEFT);
		l2=new Label("Number of Months",Label.LEFT);
		l3=new Label("Interest Rate",Label.LEFT);
		l4=new Label("Total Payment",Label.LEFT);
		t1=new TextField(5);
		t2=new TextField(5);
		t3=new TextField(15);
		t4=new TextField(20);
		b1=new Button("OK");
		b2=new Button("Delete");
		cbg=new CheckboxGroup();
		c1=new Checkbox("Month Rate",cbg,true);
		c2=new Checkbox("Annual Rate",cbg,true);
		t1.addActionListener(this);
		t2.addActionListener(this);
		t3.addActionListener(this);
		t4.addActionListener(this);
		b1.addActionListener(this);
		b2.addActionListener(this);
		c1.addItemListener(this);
		c2.addItemListener(this);
		add(l1);
		add(t1);
		add(l2);
		add(t2);
		add(l3);
		add(t3);
		add(l4);
		add(t4);
		add(c1);
		add(c2);
		add(b1);
		add(b2);
	}
	public void itemStateChanged(ItemEvent ie)
	{
	}
	public void actionPerformed(ActionEvent ae)
	{
		str=ae.getActionCommand();
		if(str.equals("OK"))
		{
			p=Double.parseDouble(t1.getText());
			n=Double.parseDouble(t2.getText());
			r=Double.parseDouble(t3.getText());
			if(c2.getState())
			{
				n=n/12;
			}
			i=(p*n*r)/100;
			total=p+i;
			t4.setText(" "+total);
		}
		else if(str.equals("Delete"))
		{
			t1.setText(" ");
			t2.setText(" ");
			t3.setText(" ");
			t4.setText(" ");
		}
	}
}

Output:

Java applet program output for interest rate calculation
Java applet program output for interest rate calculation

3 Responses to “Java applet program for interest rate calculation”

  1. You have got

    I would like to thank you terribly much for your work you have created in inscribing this posting. I am hoping the identical high job from you down the road also.

    Reply

Leave a Reply