All Classes and Interfaces

Class	Description
AJavaparserAstMutator	Enables common behavior to JavaParser-based rules
AJavaparserExprMutator	Most AJavaparserAstMutator will trigger over an Expression
AJavaparserNodeMutator	A single-node (i.e.
AJavaparserStmtMutator	Most AJavaparserNodeMutator will trigger over an Statement
ApplyAfterMe	Deprecated.
ApplyBeforeMe	Deprecated.
ARefactorConsecutiveStatements	Helps building an IMutator which will process consecutive Statements in a BlockStmt
ArithmethicAssignment	Turns 'i = i + 3;` into `i += 3;`
ArithmeticOverFloats	Turns '1F + 0.1F` into `(double) 1F + 0.1F`
ArraysDotStream	Turns 'Arrays.asList("1", 2).stream()' into 'Arrays.stream("1", 2)'
ATodoJavaParserMutator	Helps preparing rules
AUseXIsEmpty	Migrate from 'm.size() == 0’ to ’m.isEmpty()'.
AvoidFileStream	Deprecated.
AvoidInlineConditionals	Turns 'boolean b = (x > 1 ) ? true : callback.doIt() || true' into 'if (x > 1) { ...
AvoidMultipleUnaryOperators	Turns '!!someBoolean()' into 'someBoolean()'
AvoidUncheckedExceptionsInSignatures	Turns `throws RuntimeException` into ``
BinaryExprHelpers	Helps mutating BinaryExpr
CastMathOperandsBeforeAssignement	Turns 'float f = 2/3;` into `float f = (float)2/3;`
CheckStyleMutators	This mutator will apply all IMutator fixing a CheckStyle rules.
CollectionIndexOfToContains	Turns 's.indexOf(subString) >= 0' into 'c.contains(subString)' in String
CollectionToOptional	Turns `list.isEmpty() ? Optional.empty() : Optional.of(list.get(0))` into `list.stream().findFirst()`
ComparisonWithNaN	Turns 'd == Double.NaN' into 'Double.isNaN(d)'
CompositeJavaparserMutator	This mutator make it easy to composite multiple IJavaparserAstMutators in a single one.
CreateTempFilesUsingNio	cases inspired from #description
EmptyControlStatement	Turns '{}' into ''
EnumsWithoutEquals	Prevent relying .equals on Enum types
ErrorProneMutators	This mutator will apply all IMutator fixing ErrorProne rules.
FailedMutationException	An exception thrown when a mutation fails.
ForEachAddToStreamCollectToCollection	See TestForEachAddToStreamCollectToCollectionCases
ForEachIfBreakElseToStreamTakeWhile	Turns `for(User user : users) { if(!isImportantCustomer(user)) { break; } attachDiscount(user); }` into `users.stream().takeWhile(user -> isImportantCustomer(user)).forEach(user -> applyDiscount(user));`
ForEachIfBreakToStreamFindFirst	Turns `String key = ""; for (String value : values) { if (value.length() > 4) { key = value; break; } }` into `String key = values.stream().filter(value -> value.length() > 4).findFirst().orElse("");`
ForEachIfToIfStreamAnyMatch	See TestForEachIfToIfStreamAnyMatchCases
ForEachToIterableForEach	Turns `for (String string : stringList) {System.out.println(string);}` into `stringList.forEach(s -> System.out.println(s));`
GuavaImmutableMapBuilderOverVarargs	Turns 'ImmutableMap.of("k1", 0, "k2", 1)` into `ImmutableMap.builder().put("k1", 0).put("k2", 1).build()`
GuavaInlineStringsRepeat	Turns 'Strings.repeat("abc", 3)` into `"abc".repeat(3)`
GuavaMutators	This mutator will apply all IMutator improving Guava usage.
GuavaStringsIsNullOrEmpty	Turns 's == null || s.isEmpty()` into `Strings.isNullOrEmpty(s)`
IDisabledMutator	Deprecated.
IJavaparserAstMutator	An IMutator which can edit a JavaParser Node
IJavaparserNodeMutator	An IMutator which can edit a JavaParser Node
ImportDeclarationHelpers	Helps working with ImportDeclaration
ImportQualifiedTokens	This will turn qualified names into imports.
IMutatorDescriber	Helpers knowing what could be the impact of given rule
JavaFormattersFactory	Formatter for Java
JavaRefactorer	This class is dedicated to refactoring.
JavaRefactorerStep	CleanThat as an IEngineStep.
JSparrowMutators	This mutator will apply all IMutator fixing ErrorProne rules.
JUnit4ToJUnit5	Migrate from JUnit4 to JUnit5/Jupiter.
LambdaExprHelpers	Helps crafting LambdaExpr
LambdaIsMethodReference	Turns `.stream(s -> s.size())` into `.stream(String::size)`
LambdaReturnsSingleStatement	Turns '.stream(s -> {return s.subString(0, 2)})' into '.stream(s -> s.subString(0, 2))'
LiteralsFirstInComparisons	Switch o.equals("someString") to "someString".equals(o)
LocalVariableTypeInference	Turns 'int i = 10;' into 'var i = 10'.
LoopIntRangeToIntStreamForEach	Turns `for (int i = 0 ; i < 10 ; i ++) {System.out.println(string);}` into `IntStream.range(0, 10).forEach(j -> System.out.println(j));`
MethodCallExprHelpers	Helps working with MethodCallExpr
ModifierOrder	Order modifiers according the the Java specification.
NameExprHelpers	Helps working with NameExpr
NodeAndSymbolSolver<T extends com.github.javaparser.ast.Node>	As we may process cloned Node, and such Node has no CompilationUnit, we need to transport the SymbolSolver manually.
NullCheckToOptionalOfNullable	Turns `if (s != null) {...}` into `Optional.ofNullable(s).ifPresent(...)` BEWARE This case of application should be restricted, as a simple null-check is often simpler than an `Optional.ofNullable`, especially if the `thenStmt` does not depends on the nullable variable.
ObjectEqualsForPrimitives	Turns 'Object.equals(1, 5)` into `1 == 5`
ObjectsHashCodePrimitive	Turns 'Object.hashCode(1)` into `Integer.hashCode(1)`
OnMethodName	Make easier processing on code-tree
OptionalMapIdentity	Turns `optional.map(name -> name)` into `optional`
OptionalNotEmpty	Turns '!o.isEmpty()' into 'o.isPresent()'
OptionalOrRejection<T>	This may return an Optional result, or a rejection flag.
OptionalWrappedIfToFilter	Turns `o.ifPresent(s -> { String subString = s.substring(1); System.out.println(subString); });` into `o.map(s -> s.substring(1)).ifPresent(subString -> { System.out.println(subString); });`
OptionalWrappedVariableToMap	Turns `o.ifPresent(s -> { String subString = s.substring(1); System.out.println(subString); });` into `o.map(s -> s.substring(1)).ifPresent(subString -> { System.out.println(subString); });`
PMDMutators	This mutator will apply all IMutator fixing a PMD rules.
PrimitiveWrapperInstantiation	Turns `new Double(d)` into `Double.valueOf(d)`
RedundantLogicalComplementsInStream	Turns `!strings.stream().anyMatch(p)` into `strings.stream().noneMatch(p)`
RemoveAllToClearCollection	Turns 'c.removeAll(c)' into 'c.clear()' in Collection
RemoveExplicitCallToSuper	Turns 'SomeClassWithConstructor(){super(); someMethod();}` into `SomeClassWithConstructor(){someMethod();}`.
RepeatOnSuccess	Deprecated.
ResolvedTypeHelpers	Helps working with ResolvedType
SafeAndConsensualMutators	This mutator will apply all IMutator considered safe (e.g.
SafeButControversialMutators	This mutator will apply all IMutator considered not-trivial.
SafeButNotConsensualMutators	This mutator will apply all IMutator considered safe (e.g.
SimplifyBooleanExpression	Turns `!(a == 2)` into `a != 2`
SimplifyBooleanInitialization	Turns `boolean b=false; if(X) b=true;` into `boolean b=X;` BEWARE: One may argue this is a relevant change only if the boolean is not written after its initialization, hence if the boolean can be turned into a `final` variable.
SimplifyStartsWith	Deprecated.
SonarMutators	This mutator will apply all IMutator fixing a Sonar rule.
SpotBugsMutators	This mutator will apply all IMutator fixing SpotBugs rules.
StreamAnyMatch	Turns 's.filter(p).findAny().isPresent()' into 's.anyMatch(predicate)'
StreamFlatMapStreamToFlatMap	Turns `s.flatMap(r -> r.stream().filter(c -> c.isEmpty()))` into `s.flatMap(r -> r.stream()).filter(c -> c.isEmpty())`
StreamForEachNestingForLoopToFlatMap	Turns `stream.forEach(value -> { value.forEach(user -> { System.out.println(user); }); });` into `stream.flatMap(value -> value.stream()).forEach(user -> { System.out.println(user); });`
StreamMapIdentity	Turns `stream.map(name -> name)` into `stream`
StreamMutatorHelpers	Helps building mutators around Stream
StreamMutators	This mutator will apply all IMutator improving Stream usage.
StreamWrappedIfToFilter	Turns `strings.forEach(s -> { if (s.length() >= 1) { System.out.println(s); } into `strings.filter(s -> s.length() >= 1).forEach(s -> { System.out.println(s); });`
StreamWrappedMethodRefToMap	Deprecated.
StreamWrappedVariableToMap	Turns `intStream.forEach(j -> { int c = s.charAt(j); sb.append(c); });` into `intStream.map(j -> s.charAt(j)).forEach(c -> sb.append(c))`
StringFromString	Turns `new String("StringLiteral")` into `"StringLiteral"`
StringIndexOfToContains	Turns 's.indexOf(subString) >= 0' into 'c.contains(subString)' in String
StringReplaceAllWithQuotableInput	Turns `s.replaceAll("abc", "")` into `s.replace("abc", "")`
StringToString	Turns `"someString".toString()` into `"someString"`
ThreadRunToThreadStart	Turns 'myThread.run()` into `myThread.start()`
UnnecessaryBoxing	Turns `Integer i = Integer.valueOf(2)` into `Integer i = 2` Turns `String i = Integer.valueOf(2).toString()` into `Integer i = Integer.toString(2)`
UnnecessaryFullyQualifiedName	This will remove unnecessary fully qualified type reference, typically because given type if imported.
UnnecessaryFullyQualifiedName.ImportVisitorAdapter	Collects the ImportDeclaration associated to a Node into a List
UnnecessaryImport	Remove unnecessary imports by analyzing ImportDeclaration and used tokens in current `.java` file.
UnnecessaryLambdaEnclosingParameters	Turns '.stream((s) -> s.subString(0, 2))' into '.stream(s -> s.subString(0, 2))'
UnnecessaryModifier	Turns 'public static final someMethod();' into 'someMethod();' in interfaces
UnnecessarySemicolon	Turns `int i = 0;;` into `int i = 0;`
UnsafeDueToGenerics	This mutator includes all IMutator considered unsafe as the produced code may be invalid due to generics.
UseCollectionIsEmpty	Migrate from 'm.size() == 0’ to ’m.isEmpty()'.
UseDiamondOperator	Deprecated.
UseDiamondOperatorJdk8	Deprecated.
UseExplicitTypes	Turns 'var i = 10;' into 'int i = 10;'.
UseIndexOfChar	Turns 's.indexOf("s")’ into ’s.indexOf('s')'.
UsePredefinedStandardCharset	Turns `Charset.forName("UTF-8")` into `StandardCharsets.UTF_8`
UseStringIsEmpty	Migrate from 'm.length() == 0’ to ’m.isEmpty()'.
UseTextBlocks	Turns '"a\r\n" + "b\r\n"’ into ’"""aEOLbEOL"""'
UseUnderscoresInNumericLiterals	Turns 'int i = 1234567’ into ’int i = 1_234_567'
VariableDeclarationExprHepers	Helps working with VariableDeclarationExpr