Compiling error

[lawksalih]

Good-day everyone! I am new to this forum and as you can see, I have a "new-to-java" question:

Here is the code [class Die]:

Code:

class Die {

	//Data Members

	//the largest number on a die
	private static final int MAX_NUMBER = 6;

	//the smallest number on a die
	private static final int MIN_NUMBER = 1;

	//To represent a die that is not yet rolled
	private static final int NO_NUMBER = 0;

	private int number;

	//Constructor
	public Die() {
		number = NO_NUMBER;

	}

	//Rolls the die
	public void roll() {
		number = (int) (Math.floor(Math.random() *
							(MAX_NUMBER - MIN_NUMBER + 1)) + MIN_NUMBER);

	}

	//Returns the number on this die
	public int getNumber() {
		return number;
	}
}

and here is [class RollDice]:

Code:

class RollDice {

	//Simulates the rolling of three dice
	public static void main(String[] args) {

		Die one, two, three
		one = new Die( );
		two = new Die( );
		three = new Die( );

		one.roll();
		two.roll();
		three.roll();

		System.out.println("Results are " + one.getNumber( ) + "	" +
											two.getNumber( ) + "	" +
											three.getNumber( ) );
	}

}

Anytime I try to compile the code of the RollDice class, I get an error and it says:

Quote:

D:\FILE\RollDice.java:7: ';' expected
one = new Die( );
^
1 error

Tool completed with exit code 1

Die class compiles successfully but when I try to run it, I get the following error message:

Quote:

Exception in thread "main" java.lang.NoSUchMethodError: main

Press any key to continue...

Your help will be greatly appreciated.

[tim]

Welcome lawksalih

You've got a missing semicolon. Only a syntax error.

Code:

class RollDice {

	//Simulates the rolling of three dice
	public static void main(String[] args) {

		Die one, two, three;
		one = new Die( );
		two = new Die( );
		three = new Die( );

		one.roll();
		two.roll();
		three.roll();

		System.out.println("Results are " + one.getNumber( ) + "	" +
											two.getNumber( ) + "	" +
											three.getNumber( ) );
	}

}

It should work now.

[lawksalih]

Grrrrrrrrrrrrrrrrrrrr.

Thanks very much.

[tim]

Quote:

Originally Posted by lawksalih

Grrrrrrrrrrrrrrrrrrrr

Strange. Do you have another problem or question?

[gibsonrocker800]

lawksalih, make sure you actually try to understand the error messages. Because i mean, the error clearly states that there was a missing semicolon

D:\FILE\RollDice.java:7: ';' expected

It even tells you the line where the error occured (line 7).

It is important to be able to solve these things.

[lawksalih]

It was my fault for not paying attention. But your help is greatly appreciated.

Best,

Lawk

[gibsonrocker800]

Quote:

Originally Posted by lawksalih

It was my fault for not paying attention. But your help is greatly appreciated.

Best,

Lawk

It's cool man, just from now on, see if you can understand error messages, and if not, just post em here and ask what they mean and how to resolve them. Just a few that i think are common: (not word for word)

Code:

ExampleClass e = new ExampleClass();

Error:
ExampleClass cannot be resolved to a type:
This means one of two things:
1) You didn't import ExampleClass
2) ExampleClass does not exist

-----------Error 2----------------

Code:

ExampleClass e = new ExampleClass(5);

Error:
Cannot find symbol constructor ExampleClass(int a)
This means that you are using a constructor that does not exist
In this case, the constructor ExampleClass(int a) does not exist in the
ExampleClass class.
(The same holds true for methods)

----------Error 3-----------------

Code:

if(a == b))
//do something

Error:
Syntax error on token ')', delete this token
This obviously means that you have an extra parenthesis.


There are many many more you will come across, but these are 3 syntax errors. Eventually, you'll get to the point where you never worry about compile time errors, because you understand the error messages immediately and can fix them. It's logic errors you're gonna hate.