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According to the Java Language Specification \[[JLS 05|AA. Java References#JLS 05]\], section 8.4.8.3 ""Requirements in Overriding and Hiding"": |
The access modifier of an overriding or hiding method must provide at least as much access as the overridden or hidden method, or a compile-time error occurs.
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class BadScope {
protected void doLogic() {
System.out.println(""Super invoked"");
}
}
public class Sub extends BadScope {
public void doLogic() {
System.out.println(""Sub invoked"");
// Do sensitive operations
}
}
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class BadScope {
protected final void doLogic() { // declare as final
System.out.println(""Super invoked"");
// Do sensitive operations
}
}
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\[[JLS 05|AA. Java References#JLS 05]\] [Section 8.4.8.3, Requirements in Overriding and Hiding|http://java.sun.com/docs/books/jls/third_edition/html/classes.html#8.4.8.3] [\[[SCG 07|AA. Java References#SCG 07]\]] Guideline 1-1 Limit the accessibility of classes, interfaces, methods, and fields \[[MITRE 09|AA. Java References#MITRE 09]\] [CWE ID 487|http://cwe.mitre.org/data/definitions/487.html] ""Reliance on Package-level Scope"" |
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SCP00-J. Use as minimal scope as possible for all variables 05. Scope (SCP) SCP02-J. Do not expose sensitive private members of the outer class from within a nested class