[BSNCAPBYY]

I want to run a JAVA Program and this pops up?

--------------------Configuration: Chapter03_Example01 - JDK version 1.6.0_10 <Default> - <Default>--------------------
java.lang.NoClassDefFoundError: Mortgage
Caused by: java.lang.ClassNotFoundException: Mortgage
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: Mortgage. Program will exit.
Exception in thread "main"
Process completed.

Please help me so I can move on, thanks

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Usually it means that you haven't defined the entry point for the program - i.e. it doesn't know where to start.

Can you post the code for the program so we can see if we can help? Also, what compiler/IDE are you using?

[jpshortstuff]

Usually it means that you haven't defined the entry point for the program - i.e. it doesn't know where to start.

Can you post the code for the program so we can see if we can help? Also, what compiler/IDE are you using?

[BSNCAPBYY]

Can you post the code for the program so we can see if we can help?


import java.io.*;
import java.text.NumberFormat;

public class Mortgage {

public static void main(String args[]) throws IOException {

BufferedReader keyboard =
new BufferedReader(new InputStreamReader(System.in));
double principal, rate, ratePercent;
int years, n;
final int paymentsPerYear = 12;
final int timesPerYearCalculated = 12;
double effectiveAnnualRate;
double payment;
NumberFormat currency = NumberFormat.getCurrencyInstance();

System.out.print("How much are you borrowing? ");
principal = Double.parseDouble(keyboard.readLine());
System.out.print("What's the interest rate? ");
ratePercent = Double.parseDouble(keyboard.readLine());
rate = ratePercent / 100.00;
System.out.print("How many years are you taking to pay? ");
years = Integer.parseInt(keyboard.readLine());
System.out.println("------------------------------");

n = paymentsPerYear * years;
effectiveAnnualRate = rate / paymentsPerYear;
payment =
principal
* (effectiveAnnualRate
/ (1 - Math.pow(1 + effectiveAnnualRate, -n)));
System.out.print("Your monthly payment is ");
System.out.println(currency.format(payment));
System.out.println();
}
}

Also, what compiler/IDE are you using?
I am using JCreator LE

I am new to this, this code is from book I am reading, and its telling me to run this workspace so I can see how it runs, but I cant even do this, please help!!!

Thanks!!!

[jpshortstuff]

Sound like a problem with the Compiler to me.

Had a little look around, looks like this is a similar problem to yours:
http://www.jcreator....?showtopic=2595

By the sounds of it, the source file is being created in the wrong place and the compiler can't find them. I am not familiar with your IDE I'm afraid, so I can't offer any direct advice on how to solve/workaround the problem.

Have ago at the advice offered in that link above, and see if that helps with the problem.

Hope that helps.

[coyne20]

Try running the same program in Eclipse IDE. I tried it within Eclipse and JVM 1.4.2._XX. It works like a charm. Consider the output example below:

How much are you borrowing? 5000
What's the interest rate? 0.05
How many years are you taking to pay? 10
------------------------------
Your monthly payment is £41.77

[PoRco]

Yeap, just ran the code you pasted using DR.JaVa.

Definitely seems to be a problem with your compiler. Its really not worth looking into the problem, just use Dr.Java or Eclipse as suggested by a previous poster.

I recommend Dr.Java cause it doesnt auto-complete any of the code for you, you learn faster that way.

[stew4]

Hi,

I had the same problem, and i presume you were usuing the same beginning programming with java for dummies as i was. The problem was much simpler than any answers i found whilst browsing the web. Basically, for me this was, when I downloaded the Jcreator program from the books website i downloaded the pro version, DO NOT DO THIS. This is because the program still searchs for the file in a "jcreatorLE" directory.
If you download jcreator LE from the books site instead this should solve the issue, it did for me.

Hope that helps

Stewart