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Rule:  CloneImplementation4Checked automatically with code checker

Synopsis:Clone method should be public
Language:Java
Severity Level:5
Category:CloneImplementation


Description:

The java Manual says “By convention, classes that implement this interface should override Object.clone (which is protected) with a public method.”

public class Foo implements Cloneable {
    @Override
    protected Object clone() throws CloneNotSupportedException { // Violation, must be public
    }
}

public class Foo implements Cloneable {
    @Override
    protected Foo clone() { // Violation, must be public
    }
}

public class Foo implements Cloneable {
    @Override
    public Object clone() // Ok
}