Example: Principal Payments

import com.imsl.finance.*;
import java.text.NumberFormat;

public class ppmtEx1 {
    public static void main(String args[]) {
        double rate = .08;
        int per = 1;
        int nper = 25;
        double pv = 100000.00;
        double fv = 0.0;
        int when = Finance.AT_END_OF_PERIOD;
        
        double ppmt = Finance.ppmt(rate, per, nper, pv, fv, when);
        System.out.println("The payment on the principal the first year " + 
        "of the $100,000 loan is " +
        NumberFormat.getCurrencyInstance().format(ppmt));
    }
}

Output

The payment on the principal the first year of the $100,000 loan is ($1,367.88)