MonthlyPayment.java Source code

Introduction

Here is the source code for MonthlyPayment.java

Source

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class MonthlyPayment {
    public static void main(String[] args) throws Exception {
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByExtension("js");
        String calcMonthlyPaymentScript = "intrate = intrate/1200.0;"
                + "payment = principal*intrate*(Math.pow (1+intrate, months)/"
                + "                            (Math.pow (1+intrate,months)-1));";

        engine.put("principal", 20000.0);
        System.out.println("Principal = " + engine.get("principal"));
        engine.put("intrate", 6.0);
        System.out.println("Interest Rate = " + engine.get("intrate") + "%");
        engine.put("months", 360);
        System.out.println("Months = " + engine.get("months"));
        engine.eval(calcMonthlyPaymentScript);
        System.out.printf("Monthly Payment = %.2f\n", engine.get("payment"));
    }
}