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Can't get loop to work

rockybalboarockybalboa Posts: 3Member
Hello,
Can anyone advise me on why I can't get the following code to loop? I'm trying to get continuous calculation until the variable amount = 0.
I will work out display params after I get the loop to work. I'm new to Java, but not coding. This is a simple program so there's probably a simple answer.
My thanks to anyone willing to teach me.
Thanks
DW

import java.text.*;

class Wk3
{
public static void main (String[] arguments) //create main
{
int term = 30; //init var for length of loan
double amount = 200000; //init var for loan amt
double pmt = 0; //init var for payment
double rate = .0575; //init var for interest rate
double rateMo = 0; //init var for monthly interest paid
{
rate = (rate/12); //divide annual rate to get monthly rate
term = (term * 12); //multiply years to get length in months
pmt= (amount * (rate)) / (1-Math.pow(1 + rate, - term)); //compute payment
{
if (amount > 0) //run if counter >0
{
java.text.DecimalFormat dec = new java.text.DecimalFormat(",###.00"); //format next output to dollars.cents
System.out.println("
This months payment is $" + dec.format (pmt)); //display payment
System.out.println ("
Your loan balance is $" + dec.format (amount)); //display loan amt
System.out.println("
This months interest is $" + dec.format (amount * (rate ))); //montly interest payment
}
amount -= pmt;
}
}
}
}

Comments

  • VilanyeVilanye Posts: 684Member
    Where is your loop statement?
  • dehadedehade Posts: 31Member
    Change the if statement into a while loop

    [code] if (amount > 0) //run if counter >0 [/code]

    should look like:

    [code] while(amount > 0) [/code]

    : Hello,
    : Can anyone advise me on why I can't get the following code to loop? I'm trying to get continuous calculation until the variable amount = 0.
    : I will work out display params after I get the loop to work. I'm new to Java, but not coding. This is a simple program so there's probably a simple answer.
    : My thanks to anyone willing to teach me.
    : Thanks
    : DW
    :
    : import java.text.*;
    :
    : class Wk3
    : {
    : public static void main (String[] arguments) //create main
    : {
    : int term = 30; //init var for length of loan
    : double amount = 200000; //init var for loan amt
    : double pmt = 0; //init var for payment
    : double rate = .0575; //init var for interest rate
    : double rateMo = 0; //init var for monthly interest paid
    : {
    : rate = (rate/12); //divide annual rate to get monthly rate
    : term = (term * 12); //multiply years to get length in months
    : pmt= (amount * (rate)) / (1-Math.pow(1 + rate, - term)); //compute payment
    : {
    : if (amount > 0) //run if counter >0
    : {
    : java.text.DecimalFormat dec = new java.text.DecimalFormat(",###.00"); //format next output to dollars.cents
    : System.out.println("
    This months payment is $" + dec.format (pmt)); //display payment
    : System.out.println ("
    Your loan balance is $" + dec.format (amount)); //display loan amt
    : System.out.println("
    This months interest is $" + dec.format (amount * (rate ))); //montly interest payment
    : }
    : amount -= pmt;
    : }
    : }
    : }
    : }
    :

  • VilanyeVilanye Posts: 684Member
    : Change the if statement into a while loop
    :
    : [code] if (amount > 0) //run if counter >0 [/code]
    :
    : should look like:
    :
    : [code] while(amount > 0) [/code]
    :
    : : Hello,
    : : Can anyone advise me on why I can't get the following code to loop? I'm trying to get continuous calculation until the variable amount = 0.
    : : I will work out display params after I get the loop to work. I'm new to Java, but not coding. This is a simple program so there's probably a simple answer.
    : : My thanks to anyone willing to teach me.
    : : Thanks
    : : DW
    : :
    : : import java.text.*;
    : :
    : : class Wk3
    : : {
    : : public static void main (String[] arguments) //create main
    : : {
    : : int term = 30; //init var for length of loan
    : : double amount = 200000; //init var for loan amt
    : : double pmt = 0; //init var for payment
    : : double rate = .0575; //init var for interest rate
    : : double rateMo = 0; //init var for monthly interest paid
    : : {
    : : rate = (rate/12); //divide annual rate to get monthly rate
    : : term = (term * 12); //multiply years to get length in months
    : : pmt= (amount * (rate)) / (1-Math.pow(1 + rate, - term)); //compute payment
    : : {
    : : if (amount > 0) //run if counter >0
    : : {
    : : java.text.DecimalFormat dec = new java.text.DecimalFormat(",###.00"); //format next output to dollars.cents
    : : System.out.println("
    This months payment is $" + dec.format (pmt)); //display payment
    : : System.out.println ("
    Your loan balance is $" + dec.format (amount)); //display loan amt
    : : System.out.println("
    This months interest is $" + dec.format (amount * (rate ))); //montly interest payment
    : : }
    : : amount -= pmt;
    : : }
    : : }
    : : }
    : : }
    : :
    :
    :


    That would be an infinite loop as this line: amount -= pmt; is outside the if block
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