<tr bgcolor="#ffffff"><td><a href="#SR_NOT_CHECKED">RR: Method ignores results of InputStream.skip()</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#RV_RETURN_VALUE_IGNORED_BAD_PRACTICE">RV: Method ignores exceptional return value</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SI_INSTANCE_BEFORE_FINALS_ASSIGNED">SI: Static initializer creates instance before all static final fields assigned</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SW_SWING_METHODS_INVOKED_IN_SWING_THREAD">SW: Certain swing methods needs to be invoked in Swing thread</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_BAD_FIELD">Se: Non-transient non-serializable instance field in serializable class</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_BAD_FIELD_INNER_CLASS">Se: Non-serializable class has a serializable inner class</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_BAD_FIELD_STORE">Se: Non-serializable value stored into instance field of a serializable class</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_COMPARATOR_SHOULD_BE_SERIALIZABLE">Se: Comparator doesn't implement Serializable</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_INNER_CLASS">Se: Serializable inner class</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_NONFINAL_SERIALVERSIONID">Se: serialVersionUID isn't final</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_NONLONG_SERIALVERSIONID">Se: serialVersionUID isn't long</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_NONSTATIC_SERIALVERSIONID">Se: serialVersionUID isn't static</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_NO_SUITABLE_CONSTRUCTOR">Se: Class is Serializable but its superclass doesn't define a void constructor</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_NO_SUITABLE_CONSTRUCTOR_FOR_EXTERNALIZATION">Se: Class is Externalizable but doesn't define a void constructor</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_READ_RESOLVE_MUST_RETURN_OBJECT">Se: The readResolve method must be declared with a return type of Object. </a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#SE_TRANSIENT_FIELD_NOT_RESTORED">Se: Transient field that isn't set by deserialization. </a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#SE_NO_SERIALVERSIONID">SnVI: Class is Serializable, but doesn't define serialVersionUID</a></td><td>Bad practice</td></tr><tr bgcolor="#eeeeee"><td><a href="#UI_INHERITANCE_UNSAFE_GETRESOURCE">UI: Usage of GetResource may be unsafe if class is extended</a></td><td>Bad practice</td></tr><tr bgcolor="#ffffff"><td><a href="#BC_IMPOSSIBLE_CAST">BC: Impossible cast</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#BC_IMPOSSIBLE_INSTANCEOF">BC: instanceof will always return false</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#BIT_ADD_OF_SIGNED_BYTE">BIT: Bitwise add of signed byte value</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#BIT_AND">BIT: Incompatible bit masks</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#BIT_AND_ZZ">BIT: Check to see if ((...) & 0) == 0</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#BIT_IOR">BIT: Incompatible bit masks</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#BIT_IOR_OF_SIGNED_BYTE">BIT: Bitwise OR of signed byte value</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#BIT_SIGNED_CHECK_HIGH_BIT">BIT: Check for sign of bitwise operation</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#BOA_BADLY_OVERRIDDEN_ADAPTER">BOA: Class overrides a method implemented in super class Adapter wrongly</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#ICAST_BAD_SHIFT_AMOUNT">BSHIFT: Integer shift by an amount not in the range 0..31</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#BX_UNBOXED_AND_COERCED_FOR_TERNARY_OPERATOR">Bx: Primitive value is unboxed and coerced for ternary operator</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DLS_DEAD_LOCAL_STORE_IN_RETURN">DLS: Useless assignment in return statement</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DLS_DEAD_STORE_OF_CLASS_LITERAL">DLS: Dead store of class literal</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DLS_OVERWRITTEN_INCREMENT">DLS: Overwritten increment</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_BAD_MONTH">DMI: Bad constant value for month</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_CALLING_NEXT_FROM_HASNEXT">DMI: hasNext method invokes next</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_COLLECTIONS_SHOULD_NOT_CONTAIN_THEMSELVES">DMI: Collections should not contain themselves</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_INVOKING_HASHCODE_ON_ARRAY">DMI: Invocation of hashCode on an array</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_INVOKING_TOSTRING_ON_ANONYMOUS_ARRAY">DMI: Invocation of toString on an array</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_INVOKING_TOSTRING_ON_ARRAY">DMI: Invocation of toString on an array</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_LONG_BITS_TO_DOUBLE_INVOKED_ON_INT">DMI: Double.longBitsToDouble invoked on an int</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_USING_REMOVEALL_TO_CLEAR_COLLECTION">DMI: Don't use removeAll to clear a collection</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_VACUOUS_SELF_COLLECTION_CALL">DMI: Vacuous call to collections</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_ANNOTATION_IS_NOT_VISIBLE_TO_REFLECTION">Dm: Can't use reflection to check for presence of annotation without runtime retention</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_FUTILE_ATTEMPT_TO_CHANGE_MAXPOOL_SIZE_OF_SCHEDULED_THREAD_POOL_EXECUTOR">Dm: Futile attempt to change max pool size of ScheduledThreadPoolExecutor</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#DMI_SCHEDULED_THREAD_POOL_EXECUTOR_WITH_ZERO_CORE_THREADS">Dm: Creation of ScheduledThreadPoolExecutor with zero core threads</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#DMI_VACUOUS_CALL_TO_EASYMOCK_METHOD">Dm: Useless/vacuous call to EasyMock method</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EC_ARRAY_AND_NONARRAY">EC: equals() used to compare array and nonarray</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EC_BAD_ARRAY_COMPARE">EC: Invocation of equals() on an array, which is equivalent to ==</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EC_NULL_ARG">EC: Call to equals() with null argument</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EC_UNRELATED_CLASS_AND_INTERFACE">EC: Call to equals() comparing unrelated class and interface</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EC_UNRELATED_INTERFACES">EC: Call to equals() comparing different interface types</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EC_UNRELATED_TYPES">EC: Call to equals() comparing different types</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EC_UNRELATED_TYPES_USING_POINTER_EQUALITY">EC: Using pointer equality to compare different types</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EQ_ALWAYS_FALSE">Eq: equals method always returns false</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EQ_ALWAYS_TRUE">Eq: equals method always returns true</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EQ_COMPARING_CLASS_NAMES">Eq: equals method compares class names rather than class objects</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EQ_DONT_DEFINE_EQUALS_FOR_ENUM">Eq: Covariant equals() method defined for enum</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EQ_OTHER_NO_OBJECT">Eq: equals() method defined that doesn't override equals(Object)</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EQ_OTHER_USE_OBJECT">Eq: equals() method defined that doesn't override Object.equals(Object)</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#EQ_OVERRIDING_EQUALS_NOT_SYMMETRIC">Eq: equals method overrides equals in superclass and may not be symmetric</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#EQ_SELF_USE_OBJECT">Eq: Covariant equals() method defined, Object.equals(Object) inherited</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#FE_TEST_IF_EQUAL_TO_NOT_A_NUMBER">FE: Doomed test for equality to NaN</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#VA_FORMAT_STRING_BAD_ARGUMENT">FS: Format string placeholder incompatible with passed argument</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#VA_FORMAT_STRING_BAD_CONVERSION">FS: The type of a supplied argument doesn't match format specifier</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#VA_FORMAT_STRING_BAD_CONVERSION_FROM_ARRAY">FS: Array formatted in useless way using format string</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#VA_FORMAT_STRING_EXTRA_ARGUMENTS_PASSED">FS: More arguments are passed that are actually used in the format string</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#VA_FORMAT_STRING_ILLEGAL">FS: Illegal format string</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#VA_FORMAT_STRING_MISSING_ARGUMENT">FS: Format string references missing argument</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#VA_FORMAT_STRING_NO_PREVIOUS_ARGUMENT">FS: No previous argument for format string</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#GC_UNRELATED_TYPES">GC: No relationship between generic parameter and method argument</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#HE_SIGNATURE_DECLARES_HASHING_OF_UNHASHABLE_CLASS">HE: Signature declares use of unhashable class in hashed construct</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#HE_USE_OF_UNHASHABLE_CLASS">HE: Use of class without a hashCode() method in a hashed data structure</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#ICAST_INT_CAST_TO_DOUBLE_PASSED_TO_CEIL">ICAST: int value cast to double and then passed to Math.ceil</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#ICAST_INT_CAST_TO_FLOAT_PASSED_TO_ROUND">ICAST: int value cast to float and then passed to Math.round</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IJU_ASSERT_METHOD_INVOKED_FROM_RUN_METHOD">IJU: JUnit assertion in run method will not be noticed by JUnit</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IJU_BAD_SUITE_METHOD">IJU: TestCase declares a bad suite method </a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IJU_NO_TESTS">IJU: TestCase has no tests</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IJU_SETUP_NO_SUPER">IJU: TestCase defines setUp that doesn't call super.setUp()</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IJU_SUITE_NOT_STATIC">IJU: TestCase implements a non-static suite method </a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IJU_TEARDOWN_NO_SUPER">IJU: TestCase defines tearDown that doesn't call super.tearDown()</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IL_CONTAINER_ADDED_TO_ITSELF">IL: A collection is added to itself</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IL_INFINITE_LOOP">IL: An apparent infinite loop</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IL_INFINITE_RECURSIVE_LOOP">IL: An apparent infinite recursive loop</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IM_MULTIPLYING_RESULT_OF_IREM">IM: Integer multiply of result of integer remainder</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#INT_BAD_COMPARISON_WITH_NONNEGATIVE_VALUE">INT: Bad comparison of nonnegative value with negative constant</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#INT_BAD_COMPARISON_WITH_SIGNED_BYTE">INT: Bad comparison of signed byte</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#INT_BAD_REM_BY_1">INT: Integer remainder modulo 1</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#IO_APPENDING_TO_OBJECT_OUTPUT_STREAM">IO: Doomed attempt to append to an object output stream</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#IP_PARAMETER_IS_DEAD_BUT_OVERWRITTEN">IP: A parameter is dead upon entry to a method but overwritten</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#MF_CLASS_MASKS_FIELD">MF: Class defines field that masks a superclass field</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#MF_METHOD_MASKS_FIELD">MF: Method defines a variable that obscures a field</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_ALWAYS_NULL">NP: Null pointer dereference</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_ALWAYS_NULL_EXCEPTION">NP: Null pointer dereference in method on exception path</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_ARGUMENT_MIGHT_BE_NULL">NP: Method does not check for null argument</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_GUARANTEED_DEREF">NP: Null value is guaranteed to be dereferenced</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_GUARANTEED_DEREF_ON_EXCEPTION_PATH">NP: Value is null and guaranteed to be dereferenced on exception path</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_NONNULL_PARAM_VIOLATION">NP: Method call passes null to a nonnull parameter </a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_NONNULL_RETURN_VIOLATION">NP: Method may return null, but is declared @NonNull</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_NULL_INSTANCEOF">NP: A known null value is checked to see if it is an instance of a type</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_NULL_ON_SOME_PATH">NP: Possible null pointer dereference</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_NULL_ON_SOME_PATH_EXCEPTION">NP: Possible null pointer dereference in method on exception path</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_NULL_PARAM_DEREF">NP: Method call passes null for nonnull parameter</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_NULL_PARAM_DEREF_ALL_TARGETS_DANGEROUS">NP: Method call passes null for nonnull parameter</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_NULL_PARAM_DEREF_NONVIRTUAL">NP: Non-virtual method call passes null for nonnull parameter</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NP_STORE_INTO_NONNULL_FIELD">NP: Store of null value into field annotated NonNull</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NP_UNWRITTEN_FIELD">NP: Read of unwritten field</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NM_BAD_EQUAL">Nm: Class defines equal(Object); should it be equals(Object)?</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NM_LCASE_HASHCODE">Nm: Class defines hashcode(); should it be hashCode()?</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NM_LCASE_TOSTRING">Nm: Class defines tostring(); should it be toString()?</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NM_METHOD_CONSTRUCTOR_CONFUSION">Nm: Apparent method/constructor confusion</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#NM_VERY_CONFUSING">Nm: Very confusing method names</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#NM_WRONG_PACKAGE">Nm: Method doesn't override method in superclass due to wrong package for parameter</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#QBA_QUESTIONABLE_BOOLEAN_ASSIGNMENT">QBA: Method assigns boolean literal in boolean expression</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#RCN_REDUNDANT_NULLCHECK_WOULD_HAVE_BEEN_A_NPE">RCN: Nullcheck of value previously dereferenced</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#RE_BAD_SYNTAX_FOR_REGULAR_EXPRESSION">RE: Invalid syntax for regular expression</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#RE_CANT_USE_FILE_SEPARATOR_AS_REGULAR_EXPRESSION">RE: File.separator used for regular expression</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#RE_POSSIBLE_UNINTENDED_PATTERN">RE: "." used for regular expression</a></td><td>Correctness</td></tr><tr bgcolor="#ffffff"><td><a href="#RV_01_TO_INT">RV: Random value from 0 to 1 is coerced to the integer 0</a></td><td>Correctness</td></tr><tr bgcolor="#eeeeee"><td><a href="#RV_ABSOLUTE_VALUE_OF_HASHCODE">RV: Bad attempt to compute absolute value of signed 32-bit hashcode </a></td><td>Correctness</td></tr>