Settings Global Preferences
Set the following property:
"java.settings.url": "/home/<your_name>/settings.prefs",
The property can point to an URL or a local file path.
You can also define the settings preferences in your project's .settings/org.eclipse.jdt.core.prefs. It will override global settings.
The best way to create those preferences is to edit it in Eclipse.
In Eclipse, right-click on your project, open Window >Preferences > Java Code Style > Formatter, Window >Preferences > Java > Code Style > Organize Imports, Window >Preferences > Java > Compiler > Errors/Warnings and create a new settings file :
The preferences file can be exported using File > Export > General > Preferences. You can use this file to define java.settings.url.
org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode Inline JSR Bytecode Instruction. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.doc.comment.support Javadoc Comment Support. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.overridingPackageDefaultMethod Reporting Attempt to Override Package Visible Method. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.methodWithConstructorName Reporting Method With Constructor Name. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.deprecation Reporting Deprecation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.terminalDeprecation Reporting Terminal Deprecation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.deprecationInDeprecatedCode Reporting Deprecation Inside Deprecated Code. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod Reporting Deprecation When Overriding Deprecated Method. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.hiddenCatchBlock Reporting Hidden Catch Block. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedLocal Reporting Unused Local. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedParameter Reporting Unused Parameter. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedExceptionParameter Reporting Unused Exception Parameter. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract Reporting Unused Parameter if Implementing Abstract Method. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete Reporting Unused Parameter if Overriding Concrete Method. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference Consider Reference in Doc Comment for Unused Parameter Check. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unusedImport Reporting Unused Import. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedTypeArgumentsForMethodInvocation Reporting Presence of Type Arguments for a Non-Generic Method Invocation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation Reporting Synthetic Access Emulation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedTypeParameter Reporting Unused Type Parameter. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral Reporting Non-Externalized String Literal. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.assertIdentifier Reporting Usage of assert Identifier. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.enumIdentifier Reporting Usage of enum Identifier. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.staticAccessReceiver Reporting Non-Static Reference to a Static Member. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.indirectStaticAccess Reporting Indirect Reference to a Static Member. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.noEffectAssignment Reporting Assignment with no Effect. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.incompatibleNonInheritedInterfaceMethod Reporting Interface Method not Compatible with non-Inherited Methods. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedPrivateMember Reporting Unused Private Members. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.localVariableHiding Reporting Local Variable Declaration Hiding another Variable. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.specialParameterHidingField Reporting Special Parameter Hiding another Field. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.fieldHiding Reporting Field Declaration Hiding another Variable. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.typeParameterHiding Reporting Type Declaration Hiding another Type. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.possibleAccidentalBooleanAssignment Reporting Possible Accidental Boolean Assignment. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.fallthroughCase Reporting Switch Fall-Through Case. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.emptyStatement Reporting Empty Statements and Unnecessary Semicolons. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.booleanMethodThrowingException ** { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unnecessaryTypeCheck Reporting Unnecessary Type Check. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unnecessaryElse Reporting Unnecessary Else. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.undocumentedEmptyBlock Reporting Undocumented Empty Block. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.finallyBlockNotCompletingNormally Reporting Finally Blocks Not Completing Normally. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownException Reporting Unused Declared Thrown Exception. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionWhenOverriding Reporting Unused Declared Thrown Exception in Overriding Method. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionIncludeDocCommentReference Consider Reference in Doc Comment for Unused Declared Thrown Exception Check. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionExemptExceptionAndThrowable Reporting Unused Declared Thrown Exception Exempts Exception And Throwable. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unqualifiedFieldAccess Reporting Unqualified Access to Field. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.uncheckedTypeOperation Reporting Unchecked Type Operation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.rawTypeReference Reporting Raw Type Reference. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unavoidableGenericTypeProblems Reporting of Unavoidable Generic Type Problems due to raw APIs. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.finalParameterBound Reporting final Bound for Type Parameter. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingSerialVersion Reporting Missing Declaration of serialVersionUID Field on Serializable Class. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast Reporting Varargs Argument Needing a Cast in Method/Constructor Invocation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.autoboxing Reporting Boxing/Unboxing Conversion. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.annotationSuperInterface Reporting Use of Annotation Type as Super Interface. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotation Reporting Missing @Override Annotation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotationForInterfaceMethodImplementation Reporting Missing @Override Annotation for interface method implementation. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.missingDeprecatedAnnotation Reporting Missing @Deprecated Annotation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingHashCodeMethod Reporting Missing HashCode Method. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.deadCode Reporting Dead Code. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.deadCodeInTrivialIfStatement Reporting Dead Code Inside Trivial If Statement. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.incompleteEnumSwitch Reporting Incomplete Enum Switch. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingEnumCaseDespiteDefault Reporting Missing Enum Case In Switch Despite An Existing Default Case. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.missingDefaultCase Reporting Missing Default Case In Switch. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedLabel Reporting Unreferenced Label. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.invalidJavadoc Reporting Invalid Javadoc Comment. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.invalidJavadocTags Reporting Invalid Javadoc Tags. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.invalidJavadocTagsDeprecatedRef Reporting Invalid Javadoc Tags with Deprecated References. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.invalidJavadocTagsNotVisibleRef Reporting Invalid Javadoc Tags with Not Visible References. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.missingJavadocTags Reporting Missing Javadoc Tags. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding Reporting Missing Javadoc Tags on Overriding Methods. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters Reporting Missing Javadoc Tags for Method Type Parameters. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.missingJavadocComments Reporting Missing Javadoc Comments. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding Reporting Missing Javadoc Comments on Overriding Methods. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.noImplicitStringConversion Reporting Usage of char[] Expressions in String Concatenations. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.fatalOptionalError Treating Optional Error as Fatal. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.parameterAssignment Reporting Parameter Assignment. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic Reporting a method that qualifies as static, but not declared static. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic Reporting a method that may qualify as static, but not declared static. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unclosedCloseable Reporting a resource that is not closed properly. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.potentiallyUnclosedCloseable Reporting a resource that may not be closed properly. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.explicitlyClosedAutoCloseable Reporting a resource that is not managed by try-with-resources. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentType Reporting a method invocation providing an argument of an unlikely type. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentTypeStrict Perform strict analysis against the expected type of collection methods. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.annotation.nullanalysis Annotation-based Null Analysis. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.annotation.missingNonNullByDefaultAnnotation Reporting missing default nullness annotation. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.nullSpecViolation Reporting Violations of Null Specifications. { "error", "warning" }
org.eclipse.jdt.core.compiler.problem.nullAnnotationInferenceConflict Reporting conflicts between declared null annotation and inferred null value { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.nullUncheckedConversion Reporting unchecked conversion from a type with unknown nullness to a null annotated type { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.pessimisticNullAnalysisForFreeTypeVariables Reporting problems detected by pessimistic null analysis for free type variables. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.redundantNullAnnotation Reporting Redundant Null Annotations. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields Perform syntactic null analysis for fields. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.annotation.inheritNullAnnotations Inheritance of null annotations. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.nonnullParameterAnnotationDropped Reporting Dropped Nonnull Parameter Annotations. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.nonnullTypeVariableFromLegacyInvocation Reporting Unsafe NonNull Interpretation Of Type Variables. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.annotatedTypeArgumentToUnannotated Reporting Unsafe Conversion To Unannotated Type Argument. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.release Use system libraries from release. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.taskCaseSensitive Determining whether task tags are case-sensitive. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.forbiddenReference Reporting Forbidden Reference to Type with Restricted Access. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.discouragedReference Reporting Discouraged Reference to Type with Restricted Access. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.suppressWarnings Determining Effect of @SuppressWarnings. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.includeNullInfoFromAsserts Raise null related errors or warnings arising because of assert statements. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors Further Determining the Effect of @SuppressWarnings if also { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.unhandledWarningToken Reporting Unhandled Warning Token for @SuppressWarnings. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedWarningToken Reporting Unnecessary @SuppressWarnings. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.nullReference Reporting Null Dereference. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.potentialNullReference Reporting Potential Null Dereference. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.redundantNullCheck Reporting Redundant Null Check. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.overridingMethodWithoutSuperInvocation Reporting Overriding method that { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.redundantSuperinterface Reporting Redundant Superinterface. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.comparingIdentical Reporting Comparison of Identical Expressions. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.missingSynchronizedOnInheritedMethod Reporting Missing Synchronized Modifier On Inherited Method. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation Reporting Allocation of an Unused Object. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.compiler.problem.redundantSpecificationOfTypeArguments Reporting redundant specification of type arguments in class instance creation expressions. { "error", "warning", "info", "ignore" }
org.eclipse.jdt.core.computeJavaBuildOrder Computing Project Build Order. { "compute", "ignore" }
org.eclipse.jdt.core.builder.duplicateResourceTask Reporting Duplicate Resources. { "error", "warning" }
org.eclipse.jdt.core.builder.cleanOutputFolder Cleaning Output Folder(s). { "clean", "ignore" }
org.eclipse.jdt.core.builder.recreateModifiedClassFileInOutputFolder Recreate Modified class files in Output Folder. { "enabled", "ignore" }
org.eclipse.jdt.core.incompleteClasspath Reporting Incomplete Classpath. { "error", "warning" }
org.eclipse.jdt.core.circularClasspath Reporting Classpath Cycle. { "error", "warning" }
org.eclipse.jdt.core.incompatibleJDKLevel Reporting Incompatible JDK Level for Required Binaries. { "error", "warning", "ignore" }
org.eclipse.jdt.core.builder.invalidClasspath Abort if Invalid Classpath. { "abort", "ignore" }
org.eclipse.jdt.core.classpath.exclusionPatterns Enabling Usage of Classpath Exclusion Patterns. { "enabled", "disabled" }
org.eclipse.jdt.core.classpath.multipleOutputLocations Enabling Usage of Classpath Multiple Output Locations. { "enabled", "disabled" }
org.eclipse.jdt.core.classpath.outputOverlappingAnotherSource Reporting an output location overlapping another source location. { "error", "warning", "ignore" }
org.eclipse.jdt.core.classpath.mainOnlyProjectHasTestOnlyDependency Reporting if a project which has only main sources depends on a project with only test sources. { "error", "ignore" }
org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures Enabling support for preview language features. { "enabled", "disabled" }
org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures Reporting Preview features. { "warning", "info", "ignore" }
org.eclipse.jdt.core.codeComplete.visibilityCheck Activate Visibility Sensitive Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.deprecationCheck Activate Deprecation Sensitive Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.camelCaseMatch Activate Camel Case Sensitive Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.subwordMatch Activate Subword Code Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.forceImplicitQualification Automatic Qualification of Implicit Members. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.forbiddenReferenceCheck Activate Forbidden Reference Sensitive Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.discouragedReferenceCheck Activate Discouraged Reference Sensitive Completion. { "enabled", "disabled" }
org.eclipse.jdt.core.codeComplete.suggestStaticImports Activate Suggestion of Static Import. { "enabled", "disabled" }