Easy How do i fix it? it doesn't compile

[HPcompaq256]

public class Error2B
{
   public static void error(int n)
   {
       /**
        * Prints all the multiples of 10 numbers less than the given number
        * n the upper limit for the numbers
        */
       for (int i = 1; i < n; i++)
       {
           if (i % 10 = 0)
           {
               System.out.println(i);
           }
       }
    }
}

[gcalvin]

You need a method called main() so that the runtime knows where to start.

        public static void main(String[] args) {
                // TODO: your code goes here
        }

Also, "error" is a bad name for your method (but that won't stop it from working). Error2B is a bad class name too, but that may not have been your choice.

-Gary-

[Norm]

it doesn't compile

When you get errors, please copy and paste full text here.

[iluxa]

f (i % 10 = 0)

should be

f (i % 10 == 0)

[me26]

that's right, there is no main method, in java SE, you must have main method to compile your program...

best regard

akbar

Hibernate Criteria Query - MySQL Command Syntax Dictionary

[Norm]

you must have main method to compile your program

I don't think so. Can you give me an example? Please include the compiler error message(s). What about Applets?

The main() method is what the java program looks for when you try to execute an application. It's the starting point for execution when using the java program.

[me26]

yes, that's i mean, main() method for execute the program, not compile. compiler for made to perform iteration errors in code.

[thomasdevos]

hi dsohi1821,
take this code

public class Error2B {
	public static void error(int n) {
		/**
		 * Prints all the multiples of 10 numbers less than the given number n
		 * the upper limit for the numbers
		 */
		for (int i = 1; i < n; i++) {
			if (0 == i % 10) {
				System.out.println(i);
			}
		}
	}
//	public static void main(String[] args) {
//		error(123);
//	}

}

just change

           if (i % 10 = 0)

into

           if (0 == i % 10)

public class Error2B
{
   public static void error(int n)
   {
       /**
        * Prints all the multiples of 10 numbers less than the given number
        * n the upper limit for the numbers
        */
       for (int i = 1; i < n; i++)
       {
           if (i % 10 = 0)
           {
               System.out.println(i);
           }
       }
    }
}

[cselic]

Is there any difference between:

a)

 if (0 == i % 10)

b)

 if(0 == (i % 10))

c)

if( i % 10 == 0)

d)

 if ((i % 10) == 0)

Need opinion.

[m00nchile]

a) c) and d) are equal in function. However, this:

(i == 0) % 10

is erroneous. i == 0 is a comparison, that returns a boolean, true or false. What exactely is true % 10 supposed to be?

[cselic]

I have made a mistake.

For b it should be:

 if(0 == (i % 10))

I asked for opinions from the point of good programming practice.
What is recommended to use when someone write a program?
My personal opinion is d)

Is it a) better, faster, more profesional, or it's just one of the programmer's styles?

[m00nchile]

If I'd have to pick, I'd pick d) also, just for the sake of clarity.

[Tolls]

Are you on a mission to simply give people the answer?
It really doesn't help you know.

[JosAH]

If I'd have to pick, I'd pick d) also, just for the sake of clarity.

I'd pick c) because I just happen to know that the % opertor has higher precedence than the == operator. I think everybody should know that simple fact. Also I never write 2+(3*4) because I know it's the same as 2+3*4.

It's outright ludicrous to write 0 == (i%10) (as was suggest in the reply #8). 0 equals 0, I know that, I'm interested in the fact whether or not i%10 == 0.

kind regards,

Jos

[j2me64]

I'd pick c) because I just happen to know that the % opertor has higher precedence than the == operator.

me too.

Operators (The Java™ Tutorials > Learning the Java Language > Language Basics)

but i must admit that sometimes braces makes a term more readable, even if not needed.

[Tolls]

I tend to over-brace...for I am a developer of very little brain.

...I mean I have better things to remember than precedence.
:)

[JosAH]

I tend to over-brace...for I am a developer of very little brain.

...I mean I have better things to remember than precedence.
:)

Ok, give us one little example of those 'better things'; I mean, I can hardly remember where I left my tobacco ;-)

Parentheisization (is that a word?) is a good thing: when in doubt: parenthesize; I'm almost never in doubt when it comes to those silly parentheses ;-)

kind regards,

Jos

[gcalvin]

Some people like to put the constant for comparison on the left so that if they absent-mindedly do

        if (0 = checkThisValue) {

instead of

        if (0 == checkThisValue) {

they will get a compile error. Of course, in Java

        if (checkThisValue = 0) {

will give a compile error anyway, but in some languages (C, PHP, others), where a zero is considered false, and a non-zero int is considered true, the results of an assignment can be used in an if statement, so that code would compile, but not do what you want.

-Gary-

[Tolls]

More important things?
Well, for starters I need to think about what I'm going to eat tonight...what to watch on TV...you know, useful stuff.
:)

As for doubt...I am riddled with doubt. I'm permanently amazed I ever actually deliver anything.