Thread: My program won't compile or run. Java homework assignment from the book absoulte Java, chapter 4, prob 11.

public class Pizza
{
private String size;
private int cheese;
private int pepperoni;
private int ham;
 
 
public Pizza()
{
 
size = "small";
cheese = 0;
pepperoni = 0;
ham = 0;
}
 
public Pizza(String size)
 
{
this.size = size;
cheese = 0;
pepperoni = 0;
ham = 0;
}
 
 
public Pizza(String size, int cheese, int pepperoni, int ham)
{
this.size = size;
if(cheese < 0)
this.cheese = 0;
 
else
 
this.cheese = cheese;
 
if(pepperoni < 0)
this.pepperoni = 0;
 
else
 
this.pepperoni = pepperoni;
 
if(ham < 0)
this.ham = 0;
 
else
 
this.ham = ham;
}
 
public void setSize(String newSize)
 
{
 
size = newSize;
 
}
 
public void setCheese(int newCheese)
{
 
if(newCheese < 0)
cheese = 0;
 
else
 
cheese = newCheese;
 
}
 
public void setPepperoni(int newPepperoni)
{
if(newPepperoni < 0)
pepperoni = 0;
 
else
 
pepperoni = newPepperoni;
 
}
 
public void setHam(int newHam)
{
if(newHam < 0)
ham = 0;
 
else
 
ham = newHam;
}
 
public String getSize()
 {
 
  return size;
 
}
 
public int getCheese()
 
{
 
 return cheese;
 
}
 
public int getPepperoni()
 
{
 
 return pepperoni;
 
}
 
public int getHam()
 
{
	return ham;
 
}
 
public double calcCost()
{
if(size.equals("small"))
return 10 + 2 *(ham + cheese + pepperoni);
 
else if(size.equals("medium"))
return 12 + 2 *(ham + cheese + pepperoni);
 
else
return 14 + 2 *(ham + cheese + pepperoni);

}
public String getDescription()
 
{
 
return size + "pizza with" + ham + "ham toppings," + cheese + "cheese toppings, and" + pepperoni + "pepperoni toppings.";
 
}
}

it says can't find main class when I run, when I compile it is showing one error. I am so new I do not know what the error means.

public class TestPizza
{
 
 
public static void main(String[] args)
{
Pizza pizza1 = new Pizza();
Pizza pizza2 = new Pizza("small");
Pizza pizza3 = new Pizza("large", 3,4,5);
 
pizza1.setSize("medium");
pizza1.setPepperoni(5);
pizza2.setHam(5);
pizza3.setCheese(4);
 
System.out.println("Pizza 1's data:");
System.out.println("Size:" + pizza1.getSize());
System.out.println("Pepperoni toppings:" + pizza1.getPepperoni());
System.out.println("Cheese toppings:" + pizza1.getCheese());
System.out.println("Ham toppings:" + pizza1.getHam());
 
System.out.println();
System.out.println(pizza1.getDescription());
System.out.println(pizza2.getDescription());
System.out.println(pizza3.getDescription());
System.out.println();
System.out.println("Pizza 1's cost: $" + pizza1.calcCost());
System.out.println("Pizza 1's cost: $" + pizza2.calcCost());
System.out.println("Pizza 3's cost: $" + pizza3.calcCost());
 
}
}

It says the same error messages, not finding the main class, won't run and one

.

I AM USING TEXT PAD. Is that maybe the issue?? In the tutorial for the program example in the book he is using text pad, I do have Jcreator and net beans. I will tell you the error messages.
Screenshot (15).jpgScreenshot (16).jpgScreenshot (17).jpgScreenshot (18).jpg

i RAN IT IN JCREATOR AND IT WORKED. But I have been using text pad and feel cozy with it. Maybe it no good? I sent some attached screen shots. THANK YOU FOR YOUR HELP. Yes my print outs need to be fixed, spacing, etc. Like I said, I am sooo soo new. I want to keep on keeping on, I got discouraged. Please advise any help you can, maybe not use text pad? The errors were from that software.

.

Is it free? LOL. Text Pad is not and time is running out for the sample of it. Hey, I want to thank you for your kindness this morning. I DO appreciate it and was hesitant because I know people do not do their work and want help with it, as you see all my code was there, I just could not figure it out. I seen another error on line 134 that text pad was not showing.. WOW, I am learning, I won't give up, I love programming and it is a slap in the chops when I make a mistake, but I love the fact I get help from a person I do not know. I appreciate your all around kindness!!

--- Update ---

Yes, I fixed it, reran it, my issue is solved, I submitted it, and will look into Dr.Java as good advice you gave me! I thank you!!!

.

Originally Posted by javaiscool

Great! I'm also a beginner (2nd semester uni course in java). Yes, Dr. Java is free and I believe open source. Much (maybe all?) software hosted on SourceForge is open source and free (community developed by many programmers around the world). I can't believe Textpad sucks so much, AND that they charge for it. Hahaha.... What a failure of a company. You did a good job of re-phrasing your post by the way. Best wishes.

Thanks for your reply. Yes textpad missed an error and I ran it in Jcreator and it was seen by my own eyes, LOL . Will def look into DrJava. Best wishes to you as well!!