SEI CERT Oracle Coding Standard for Java

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changes.mady.by.user Carol J. Lallier

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changes.mady.by.user Arthur Hicken

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Comment: added parasoft

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Autoboxing automatically wraps a value of a primitive type with the corresponding wrapper object. The Java Language Specification (JLS), §5.1.7, "Boxing Conversion" [JLS 2015], explains which primitive values are memoized during autoboxing:

If the value p being boxed is true, false, a byte, a char in the range \u0000 to \u007f, or an int or short number between -128 and 127, then let r1 and r2 be the results of any two boxing conversions of p. It is always the case that r1 == r2.

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Tool
Version
Checker
Description
Coverity7.5

BAD_EQ
FB.EQ_ABSTRACT_SELF
FB.EQ_ALWAYS_FALSE
FB.EQ_ALWAYS_TRUE
FB.EQ_CHECK_FOR_OPERAND_NOT_ COMPATIBLE_WITH_THIS
FB.EQ_COMPARETO_USE_OBJECT_ EQUALS
FB.EQ_COMPARING_CLASS_NAMES
FB.EQ_DOESNT_OVERRIDE_EQUALS
FB.EQ_DONT_DEFINE_EQUALS_ FOR_ENUM
FB.EQ_GETCLASS_AND_CLASS_ CONSTANT
FB.EQ_OTHER_NO_OBJECT
FB.EQ_OTHER_USE_OBJECT
FB.EQ_OVERRIDING_EQUALS_ NOT_SYMMETRIC
FB.EQ_SELF_NO_OBJECT
FB.EQ_SELF_USE_OBJECT
FB.EQ_UNUSUAL
FB.ES_COMPARING_PARAMETER_ STRING_WITH_EQ
FB.ES_COMPARING_STRINGS_ WITH_EQ
FB.ES_COMPARING_PARAMETER_ STRING_WITH_EQ

Implemented
Parasoft Jtest9.5PB.CUB.UEIC 

Related Guidelines

MITRE CWE

CWE-595, Comparison of Object References Instead of Object Contents
CWE-597, Use of Wrong Operator in String Comparison

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