AssignmentToNonFinalStatic
Error prone
Warning
Possible unsafe assignment to a non-final static field in a constructor.
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Java rules
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AvoidBranchingStatementAsLastInLoop
Error prone
Error
Avoid using a branching statement as the last in a loop.
AvoidDecimalLiteralsInBigDecimalConstructor
Error prone
Warning
Avoid creating BigDecimal with a decimal (float/double) literal. Use a String literal
AvoidInstanceofChecksInCatchClause
Error prone
Warning
An instanceof check is being performed on the caught exception. Create a separate catch clause for this exception type.
AvoidMultipleUnaryOperators
Error prone
Error
Using multiple unary operators may be a bug
AvoidUsingOctalValues
Error prone
Warning
Do not start a literal by 0 unless its an octal value
BadComparison
Error prone
Warning
Avoid equality comparisons with Double.NaN
BrokenNullCheck
Error prone
Error
Method call on object which may be null
CheckSkipResult
Error prone
Warning
Check the value returned by the skip() method of an InputStream to see if the requested number of bytes has been skipped.
ClassCastExceptionWithToArray
Error prone
Warning
This usage of the Collection.toArray() method will throw a ClassCastException.
CloseResource
Error prone
Warning
Ensure that resources like this PipedWriter object are closed after use
CompareObjectsWithEquals
Error prone
Warning
Use equals() to compare object references.
ConstructorCallsOverridableMethod
Error prone
Critical
Overridable method 'getAction' called during object construction
DontUseFloatTypeForLoopIndices
Error prone
Warning
Dont use floating point for loop indices. If you must use floating point
EqualsNull
Error prone
Critical
Avoid using equals() to compare against null
IdempotentOperations
Error prone
Warning
Avoid idempotent operations (like assigning a variable to itself).
InstantiationToGetClass
Error prone
Informational
Avoid instantiating an object just to call getClass() on it; use the .class public member instead
JumbledIncrementer
Error prone
Warning
Avoid modifying an outer loop incrementer in an inner loop for update expression
MisplacedNullCheck
Error prone
Warning
The null check here is misplaced; if the variable is null there will be a NullPointerException
MissingBreakInSwitch
Error prone
Warning
A switch statement does not contain a break
MissingStaticMethodInNonInstantiatableClass
Error prone
Warning
Class cannot be instantiated and does not provide any static methods or fields
NonCaseLabelInSwitchStatement
Error prone
Warning
A non-case label was present in a switch statement
NonStaticInitializer
Error prone
Warning
Non-static initializers are confusing
OverrideBothEqualsAndHashcode
Error prone
Warning
Ensure you override both equals() and hashCode()
ReturnEmptyArrayRatherThanNull
Error prone
Critical
Return an empty array rather than null.
ReturnFromFinallyBlock
Error prone
Warning
Avoid returning from a finally block
SimpleDateFormatNeedsLocale
Error prone
Warning
When instantiating a SimpleDateFormat object
SingleMethodSingleton
Error prone
Error
Class contains multiple getInstance methods. Please review.
SingletonClassReturningNewInstance
Error prone
Error
getInstance method always creates a new object and hence does not comply to Singleton Design Pattern behaviour. Please review
UnconditionalIfStatement
Error prone
Warning
Do not use if statements that are always true or always false
UseLocaleWithCaseConversions
Error prone
Warning
Use explicit locale when doing a String.toLowerCase()/toUpperCase() call