bnblazer
asked on
style question
I am currently learning java. So far so good. One of the tools I am using to help with this is the 'checkstyle' plugin for Eclipse. I is giving me a style warning for the following code:
final class Buzz {
/**
* @param args none
*/
public static void main(String[] args) {
//Set the variables
int x = 1, y = 100;
//Run through the numbers and print the output
for (int i=x;i<=y;i++) {
if (i % 7 == 0) {
System.out.println("Buzz")
} else {
System.out.println(i);
}
}
}
}
The warning is at 'final class Buzz { '. It says "Hide utility class constructor -Utility classes should not have a public or default constructor."
I have tried to look this up, but the only thing I can find is about java.util. Nothing about the style warning. I am not sure if this warning is relevant or not, and if it is, how would I hide the constructor? I am unsure what it is talking about.
Obviously this code did come from a class assignment, but it has been turned in and graded (20/20). I brought this question to the instructor, and he wasn't sure about it either.
Any help is appreciated.
Thanks,
Brian
final class Buzz {
/**
* @param args none
*/
public static void main(String[] args) {
//Set the variables
int x = 1, y = 100;
//Run through the numbers and print the output
for (int i=x;i<=y;i++) {
if (i % 7 == 0) {
System.out.println("Buzz")
} else {
System.out.println(i);
}
}
}
}
The warning is at 'final class Buzz { '. It says "Hide utility class constructor -Utility classes should not have a public or default constructor."
I have tried to look this up, but the only thing I can find is about java.util. Nothing about the style warning. I am not sure if this warning is relevant or not, and if it is, how would I hide the constructor? I am unsure what it is talking about.
Obviously this code did come from a class assignment, but it has been turned in and graded (20/20). I brought this question to the instructor, and he wasn't sure about it either.
Any help is appreciated.
Thanks,
Brian
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sorry the Math should be:
public class Math {
private Math() {} //This class cannot me instanciated.
public static double PI=3.141592653...;
...More static constants
public static int max(int a, int b) { return (a>b) ? a : b;}
...more static methods
}
EVERY method and variable is static.
public class Math {
private Math() {} //This class cannot me instanciated.
public static double PI=3.141592653...;
...More static constants
public static int max(int a, int b) { return (a>b) ? a : b;}
...more static methods
}
EVERY method and variable is static.
I think Mogal is right... I bet its just looking at your class and going "Ok - I see this has only all static methods, why would you ever want to create an instance of this class...?" To get it to go away, try declaring a private or protected constructor.
ASKER
after more research and reading the answers here, I tried the suggestions. No difference. I think that I may be dealing with a bug in checkstyle. Look at my for statement. I keep getting a warning for that too, saying that whitespace is not allowed around <=, or ++. But as you can see, there is none.
:)