MissingCtor
Since Checkstyle 3.4
Description
Checks that classes (except abstract ones) define a constructor and don't rely
on the default one.
Examples
To configure the check:
<module name="Checker">
<module name="TreeWalker">
<module name="MissingCtor"/>
</module>
</module>
Example:
public class Example1 {
private int a;
Example1(int a) {
this.a = a;
}
}
class ExampleDefaultCtor {
private String s;
ExampleDefaultCtor() {
s = "foobar";
}
}
class InvalidExample { // violation, 'Class should define a constructor'
public void test() {}
}
abstract class AbstractExample {
public abstract void test();
}
Example of Usage
Violation Messages
All messages can be customized if the default message doesn't suit you. Please see the documentation to learn how to.
Package
com.puppycrawl.tools.checkstyle.checks.coding