Coding Question Because of Compiling Issues

Question

Hi there, I need help with some code, here it is.
import java.util.*;
import java.text.*;
public class InvestCalc {
     //declaration of instance variables
     private double interest, principal;
     //default constructor, sets interest and principal to zero
     public InvestCalc() {
          interest = 0.0;
          principal = 0.0;
     //overloaded constructor
     public InvestCalc( double startInterest, double startPrincipal) {
          interest = startInterest;
          principal = startPrincipal;
     //accessor methods for instance variables
     public double getRate() {
          return interest;
     public double getPrincipal() {
          return principal;
     //mutator methods
     public void setRate(double newInterest) {
          interest = newInterest;
     public void setPrincipal(double newPrincipal) {
          principal = newPrincipal;
     //String toString() method
     public String toString() {
          return "Interest Rate: " + percent.format(interest) + ", Principal: " + DOLLAR_FORMAT.format(principal);     
     //futureValue(int year) method
     public double futureValue(int year) {
          double futureValue = Math.pow((1 + interest), year)*principal;
          return futureValue;
     //public static final class variables
     public static final int shortTerm = 5;
     public static final int middleTerm = 10;
     public static final int longTerm = 20;
     //public void display Table() method
     public void displayTable() {
          System.out.println("Year" + "\t" + "Interest Rate" + "\t\t" + "Principal" + "\t\t" + "Future Value");
          System.out.println(shortTerm + "\t" + percent.format(interest) + "\t\t\t" + DOLLAR_FORMAT.format(principal) + "\t\t" + DOLLAR_FORMAT.format(futureValue(shortTerm)));
          System.out.println(middleTerm + "\t" + percent.format(interest) + "\t\t\t" + DOLLAR_FORMAT.format(principal) + "\t\t" + DOLLAR_FORMAT.format(futureValue(middleTerm)));
          System.out.println(longTerm + "\t" + percent.format(interest) + "\t\t\t" + DOLLAR_FORMAT.format(principal) + "\t\t" + DOLLAR_FORMAT.format(futureValue(longTerm)));
     //formatting section
     public static final NumberFormat DOLLAR_FORMAT = NumberFormat.getCurrencyInstance();
     public static final DecimalFormat percent = new DecimalFormat("##0.00%");
import java.util.*;
public class InvestCalcApp {
      * @param args
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          //declare Scanner class and interest, principal vars
          Scanner input = new Scanner(System.in);          
          double interest, principal;     //vars for the interest rate and initial investment
          //instantiate a default object of the InvestCalc class
          InvestCalc value1 = new InvestCalc();
          System.out.println("Default InvestCalc Object");
          System.out.println(value1.toString()+ "\n");
          //query for interest and principal
          System.out.print("Enter an interest rate in decimal format: ");
          interest = input.nextDouble();
          System.out.print("Enter the initial investment value: ");
          principal = input.nextDouble();
          //change object and output
          value1.setRate(interest);
          value1.setPrincipal(principal);
          System.out.println("Updated InvestCalc Object");
          System.out.println(value1.toString());
          //test the futureValue method and the DOLLAR_FORMAT static class variable
          System.out.println("Value after 1 year " + InvestCalc.DOLLAR_FORMAT.format(value1.futureValue(1)) + "\n");     
          value1.displayTable();     
          //query for another interest and principal
          System.out.print("Enter another interest rate in decimal format: ");
          interest = input.nextDouble();
          System.out.print("Enter another initial investment value: ");
          principal = input.nextDouble();
          //instantiate an object of the InvestCalc class
          InvestCalc value2 = new InvestCalc(interest, principal);
          System.out.println("Non-Default InvestCalc Object");
          System.out.println(value2.toString()+ "\n");
          value2.displayTable();
}When I compile InvestCalc.java it compiles; however, when I compile InvestCalcApp.java I receive 5 errors:
InvestCalcApp.java:15: cannot find symbol
symbol : class InvestCalc
location: class InvestCalcApp
                 InvestCalc value1 = new InvestCalc();
InvestCalcApp.java:15: cannot find symbol
symbol : class InvestCalc
location: class InvestCalcApp
                 InvestCalc value1 = new InvestCalc();
InvestCalcApp.java:32: package InvestCalc does not exist
                              System.out.println("Value after 1 year " + InvestCalc.DOLLAR_FORMAT.format(value1.futureValue(1)) + "\n");
InvestCalcApp.java:42: cannot find symbol
symbol : class InvestCalc
location: class InvestCalcApp
                 InvestCalc value2 = new InvestCalc(interest, principal);
InvestCalcApp.java:42: cannot find symbol
symbol : class InvestCalc
location: class InvestCalcApp
                 InvestCalc value2 = new InvestCalc(interest, principal);Sorry if that's a lot of reading, but I need help, I'm new at this and not quite sure what those errors mean. Thanks

Answer 1

First of all make sure that class file for InvestCalc is in same directory, when you try to compile the second file.
This will take away all the errors. Thats the primary issue here :
you dont have files in the same place.