loan amortization

[rvarman]

I'm new to java.
can anyone give me the java code for the loan amortization program.

Nb of payments
Capital(i) = Amount loanedt - Sum of 1 to i-1 of amortization

Interest(i) = Capital(i) * rate/ Nb of payments par yr

Monthly payment = (Principal* rate/ Nb of payments par yr) / ( 1 – (1 + rate / Nb of payments par yr) ^ (-Nb of payments))


Amortization(i) = Monthly payment(i) – Interest(i)


Thanks for your help

 

[sedj]

We are here to help professional programmers debug and solve their code problems, not to write entire programs for people.

If you are new to Java, I suggest taking a tutorial :

http://java.sun.com/docs/books/tutorial/index.html

If you can post some code which you are having problems with, we'd me more than happy to help.

 

[rvarman]

hi sedj,
Your ieda is not a constructive one.
If you could not suggest anything, please leave others to do.
I need the directions to proceed with.

To calculate Capital(i), i need the sum of the monthly payment.

Monthly payment(i) needs interest(i)
interest(i) needs capital(i)
So all these things are related.

Shd i construct a method to each (payment, interest, capital, etc=

Thanks for your suggestions.

 

[sedj]

You need a class that holds all parts of the calculation, and then a method which performs the calculation once all relevant variables are set

Something like this :

public class Calc {
  private int payment = 0;
  private int interest = 0;
  private int capital = 0;
  
  
  public void setPayment(int payment) {
  	this.payment = payment;
  }
  
  public int getPayment() {
  	return payment;
  }
  
  public void setInterest(int interest) {
  	this.interest = interest;
  }
  
  public int getInterest() {
  	return interest;
  }
  
  public void setCapital(int capital) {
  	this.capital = capital;
  }
  
  public int getCapital() {
  	return capital;
  }
  
  public int calculate() {
  	setCapital(interest *payment);
  	return getCapital();
  }
  
  
}

 

[sedj]

The power of google ...

http://ray.met.fsu.edu/~bret/am_derive/derivation.html

http://ray.met.fsu.edu/~bret/amortfaq.html

http://www.hsh.com/javamort.html