JDK 6 tools.jar is the JAR file for JDK 6 tools. It contains Java classes to support different JDK tool commands:

sun.applet.Main - Supports the "appletviewer" command.
sun.rmi.rmic.Main - Supports the "rmic" command.
sun.security.tools.jarsigner.Main - Supports the "jarsigner" command.
sun.tools.jar.Main - Supports the "jar" command.
sun.tools.javac.Main - Supports the "javac" command. 
sun.tools.jcmd.JCmd - Supports the "jcmd" command.
sun.tools.jinfo.JInfo - Supports the "jinfo" command.
sun.tools.jmap.JMap - Supports the "jmap" command.
sun.tools.jps.Jps - Supports the "jps" command.
sun.tools.jstack.JStack - Supports the "jstack" command.
sun.tools.jstat.Jstat - Supports the "jstat" command.
sun.tools.jstatd.Jstatd - Supports the "jstatd" command.
sun.tools.native2ascii.Main - Supports the "native2ascii" command.
sun.tools.serialver.SerialVer - Supports the "serialver" command.
... 

JAR File Information:

Directory of C:\fyicenter\jdk-1.6.0_45\lib
     12,642,456 tools.jar

Package Content:

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com/sun/tools/javac/processing/JavacProcessingEnvironment.class
com/sun/tools/javac/processing/JavacRoundEnvironment.class
com/sun/tools/javac/processing/PrintingProcessor.class
com/sun/tools/javac/processing/ServiceProxy.class
com/sun/tools/javac/resources/compiler.class
com/sun/tools/javac/resources/compiler_ja.class
com/sun/tools/javac/resources/compiler_zh_CN.class
com/sun/tools/javac/resources/javac.class
com/sun/tools/javac/resources/javac_ja.class
com/sun/tools/javac/resources/javac_zh_CN.class
com/sun/tools/javac/resources/legacy.class
com/sun/tools/javac/resources/version.class
com/sun/tools/javac/sym/CreateSymbols.class
com/sun/tools/javac/tree/JCTree.class
com/sun/tools/javac/tree/Pretty.class
com/sun/tools/javac/tree/TreeCopier.class
com/sun/tools/javac/tree/TreeInfo.class
com/sun/tools/javac/tree/TreeMaker.class
com/sun/tools/javac/tree/TreeScanner.class
com/sun/tools/javac/tree/TreeTranslator.class
com/sun/tools/javac/util/Abort.class
com/sun/tools/javac/util/BaseFileObject.class
com/sun/tools/javac/util/Bits.class
com/sun/tools/javac/util/ByteBuffer.class
com/sun/tools/javac/util/ClientCodeException.class
com/sun/tools/javac/util/CloseableURLClassLoader.class
com/sun/tools/javac/util/Constants.class
com/sun/tools/javac/util/Context.class
com/sun/tools/javac/util/Convert.class
com/sun/tools/javac/util/DefaultFileManager.class
com/sun/tools/javac/util/DiagnosticFormatter.class
com/sun/tools/javac/util/FatalError.class
com/sun/tools/javac/util/JCDiagnostic.class
com/sun/tools/javac/util/LayoutCharacters.class
com/sun/tools/javac/util/List.class
com/sun/tools/javac/util/ListBuffer.class
com/sun/tools/javac/util/Log.class
com/sun/tools/javac/util/MandatoryWarningHandler.class
com/sun/tools/javac/util/Messages.class
com/sun/tools/javac/util/Name.class
com/sun/tools/javac/util/Old199.class
com/sun/tools/javac/util/Options.class
com/sun/tools/javac/util/Pair.class
com/sun/tools/javac/util/Paths.class
com/sun/tools/javac/util/Position.class
com/sun/tools/javac/util/Version.class
com/sun/tools/javac/util/Warner.class
com/sun/tools/javac/zip/ZipFileIndex.class
com/sun/tools/javac/zip/ZipFileIndexEntry.class
com/sun/tools/javadoc/AbstractTypeImpl.class
com/sun/tools/javadoc/AnnotationDescImpl.class
com/sun/tools/javadoc/AnnotationTypeDocImpl.class
com/sun/tools/javadoc/AnnotationTypeElementDocImpl.class
com/sun/tools/javadoc/AnnotationValueImpl.class
com/sun/tools/javadoc/ClassDocImpl.class
com/sun/tools/javadoc/Comment.class
com/sun/tools/javadoc/ConstructorDocImpl.class
com/sun/tools/javadoc/DocCommentScanner.class
com/sun/tools/javadoc/DocEnv.class
com/sun/tools/javadoc/DocImpl.class
com/sun/tools/javadoc/DocletInvoker.class
com/sun/tools/javadoc/DocLocale.class
com/sun/tools/javadoc/ExecutableMemberDocImpl.class
com/sun/tools/javadoc/FieldDocImpl.class
com/sun/tools/javadoc/JavadocClassReader.class
com/sun/tools/javadoc/JavadocEnter.class
com/sun/tools/javadoc/JavadocMemberEnter.class
com/sun/tools/javadoc/JavadocTodo.class
com/sun/tools/javadoc/JavadocTool.class
com/sun/tools/javadoc/Main.class
com/sun/tools/javadoc/MemberDocImpl.class
com/sun/tools/javadoc/Messager.class
com/sun/tools/javadoc/MethodDocImpl.class
com/sun/tools/javadoc/ModifierFilter.class
com/sun/tools/javadoc/PackageDocImpl.class
com/sun/tools/javadoc/ParameterImpl.class
com/sun/tools/javadoc/ParameterizedTypeImpl.class
com/sun/tools/javadoc/ParamTagImpl.class
com/sun/tools/javadoc/PrimitiveType.class
com/sun/tools/javadoc/ProgramElementDocImpl.class
com/sun/tools/javadoc/resources/javadoc.class
com/sun/tools/javadoc/resources/javadoc_ja.class
com/sun/tools/javadoc/resources/javadoc_zh_CN.class
com/sun/tools/javadoc/RootDocImpl.class
com/sun/tools/javadoc/SeeTagImpl.class
com/sun/tools/javadoc/SerialFieldTagImpl.class
com/sun/tools/javadoc/SerializedForm.class
com/sun/tools/javadoc/SourcePositionImpl.class
com/sun/tools/javadoc/Start.class
com/sun/tools/javadoc/TagImpl.class
com/sun/tools/javadoc/ThrowsTagImpl.class
com/sun/tools/javadoc/TypeMaker.class
com/sun/tools/javadoc/TypeVariableImpl.class
com/sun/tools/javadoc/WildcardTypeImpl.class
com/sun/tools/apt/comp/AnnotationProcessingError.class
com/sun/tools/apt/comp/Apt.class
com/sun/tools/apt/comp/BootstrapAPF.class
com/sun/tools/apt/comp/PrintAP.class
com/sun/tools/apt/comp/UsageMessageNeededException.class
com/sun/tools/apt/main/CommandLine.class
com/sun/tools/apt/main/JavaCompiler.class
com/sun/tools/apt/main/Main.class
com/sun/tools/apt/Main.class
com/sun/tools/apt/mirror/apt/AnnotationProcessorEnvironmentImpl.class
com/sun/tools/apt/mirror/apt/FilerImpl.class
com/sun/tools/apt/mirror/apt/MessagerImpl.class
com/sun/tools/apt/mirror/apt/RoundCompleteEventImpl.class
com/sun/tools/apt/mirror/apt/RoundStateImpl.class
com/sun/tools/apt/mirror/AptEnv.class
com/sun/tools/apt/mirror/declaration/AnnotationMirrorImpl.class
com/sun/tools/apt/mirror/declaration/AnnotationProxyMaker.class
com/sun/tools/apt/mirror/declaration/AnnotationTypeDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/AnnotationTypeElementDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/AnnotationValueImpl.class
com/sun/tools/apt/mirror/declaration/ClassDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/Constants.class
com/sun/tools/apt/mirror/declaration/ConstructorDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/DeclarationImpl.class
com/sun/tools/apt/mirror/declaration/DeclarationMaker.class
com/sun/tools/apt/mirror/declaration/EnumConstantDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/EnumDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/ExecutableDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/FieldDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/InterfaceDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/MemberDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/MethodDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/PackageDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/ParameterDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/TypeDeclarationImpl.class
com/sun/tools/apt/mirror/declaration/TypeParameterDeclarationImpl.class
com/sun/tools/apt/mirror/type/AnnotationTypeImpl.class
com/sun/tools/apt/mirror/type/ArrayTypeImpl.class
com/sun/tools/apt/mirror/type/ClassTypeImpl.class
com/sun/tools/apt/mirror/type/DeclaredTypeImpl.class
com/sun/tools/apt/mirror/type/EnumTypeImpl.class
com/sun/tools/apt/mirror/type/InterfaceTypeImpl.class
com/sun/tools/apt/mirror/type/PrimitiveTypeImpl.class
com/sun/tools/apt/mirror/type/TypeMaker.class
com/sun/tools/apt/mirror/type/TypeMirrorImpl.class
com/sun/tools/apt/mirror/type/TypeVariableImpl.class
com/sun/tools/apt/mirror/type/VoidTypeImpl.class
com/sun/tools/apt/mirror/type/WildcardTypeImpl.class
com/sun/tools/apt/mirror/util/DeclarationsImpl.class
com/sun/tools/apt/mirror/util/SourcePositionImpl.class
com/sun/tools/apt/mirror/util/TypesImpl.class
com/sun/tools/apt/resources/apt.class
com/sun/tools/apt/resources/apt_ja.class
com/sun/tools/apt/resources/apt_zh_CN.class
com/sun/tools/apt/util/Bark.class
com/sun/tools/javah/Gen.class
com/sun/tools/javah/JNI.class
com/sun/tools/javah/LLNI.class
com/sun/tools/javah/Main.class
com/sun/tools/javah/MainDoclet.class
com/sun/tools/javah/Mangle.class
com/sun/tools/javah/oldjavah/Gen.class
com/sun/tools/javah/oldjavah/JavahEnvironment.class
com/sun/tools/javah/oldjavah/JNI.class
com/sun/tools/javah/oldjavah/LLNI.class
com/sun/tools/javah/oldjavah/Main.class
com/sun/tools/javah/oldjavah/Mangle.class
com/sun/tools/javah/oldjavah/OldHeaders.class
com/sun/tools/javah/oldjavah/OldStubs.class
com/sun/tools/javah/oldjavah/Util.class
com/sun/tools/javah/TypeSignature.class
com/sun/tools/javah/Util.class
com/sun/tools/corba/se/idl/Arguments.class
com/sun/tools/corba/se/idl/AttributeEntry.class
com/sun/tools/corba/se/idl/AttributeGen.class
com/sun/tools/corba/se/idl/Comment.class
com/sun/tools/corba/se/idl/Compile.class
com/sun/tools/corba/se/idl/ConstEntry.class
com/sun/tools/corba/se/idl/constExpr/And.class
com/sun/tools/corba/se/idl/constExpr/BinaryExpr.class
com/sun/tools/corba/se/idl/constExpr/BooleanAnd.class
com/sun/tools/corba/se/idl/constExpr/BooleanNot.class
com/sun/tools/corba/se/idl/constExpr/BooleanOr.class
com/sun/tools/corba/se/idl/constExpr/DefaultExprFactory.class
com/sun/tools/corba/se/idl/constExpr/Divide.class
com/sun/tools/corba/se/idl/constExpr/Equal.class
com/sun/tools/corba/se/idl/constExpr/EvaluationException.class
com/sun/tools/corba/se/idl/constExpr/Expression.class
com/sun/tools/corba/se/idl/constExpr/ExprFactory.class
com/sun/tools/corba/se/idl/constExpr/GreaterEqual.class
com/sun/tools/corba/se/idl/constExpr/GreaterThan.class
com/sun/tools/corba/se/idl/constExpr/LessEqual.class
com/sun/tools/corba/se/idl/constExpr/LessThan.class
com/sun/tools/corba/se/idl/constExpr/Minus.class
com/sun/tools/corba/se/idl/constExpr/Modulo.class
com/sun/tools/corba/se/idl/constExpr/Negative.class
com/sun/tools/corba/se/idl/constExpr/Not.class
com/sun/tools/corba/se/idl/constExpr/NotEqual.class
com/sun/tools/corba/se/idl/constExpr/Or.class
com/sun/tools/corba/se/idl/constExpr/Plus.class
com/sun/tools/corba/se/idl/constExpr/Positive.class
com/sun/tools/corba/se/idl/constExpr/ShiftLeft.class
com/sun/tools/corba/se/idl/constExpr/ShiftRight.class
com/sun/tools/corba/se/idl/constExpr/Terminal.class
com/sun/tools/corba/se/idl/constExpr/Times.class
com/sun/tools/corba/se/idl/constExpr/UnaryExpr.class
com/sun/tools/corba/se/idl/constExpr/Xor.class
com/sun/tools/corba/se/idl/ConstGen.class
com/sun/tools/corba/se/idl/DefaultSymtabFactory.class
com/sun/tools/corba/se/idl/EnumEntry.class
com/sun/tools/corba/se/idl/EnumGen.class
com/sun/tools/corba/se/idl/ExceptionEntry.class
com/sun/tools/corba/se/idl/ExceptionGen.class
com/sun/tools/corba/se/idl/Factories.class
com/sun/tools/corba/se/idl/ForwardEntry.class
com/sun/tools/corba/se/idl/ForwardGen.class
com/sun/tools/corba/se/idl/ForwardValueEntry.class
com/sun/tools/corba/se/idl/ForwardValueGen.class
com/sun/tools/corba/se/idl/Generator.class
com/sun/tools/corba/se/idl/GenFactory.class
com/sun/tools/corba/se/idl/GenFileStream.class
com/sun/tools/corba/se/idl/IDLID.class
com/sun/tools/corba/se/idl/IncludeEntry.class
com/sun/tools/corba/se/idl/IncludeGen.class
com/sun/tools/corba/se/idl/InterfaceEntry.class
com/sun/tools/corba/se/idl/InterfaceGen.class
com/sun/tools/corba/se/idl/InterfaceState.class
com/sun/tools/corba/se/idl/InterfaceType.class
com/sun/tools/corba/se/idl/InvalidArgument.class
com/sun/tools/corba/se/idl/InvalidCharacter.class
com/sun/tools/corba/se/idl/MethodEntry.class
com/sun/tools/corba/se/idl/MethodGen.class
com/sun/tools/corba/se/idl/ModuleEntry.class
com/sun/tools/corba/se/idl/ModuleGen.class
com/sun/tools/corba/se/idl/NativeEntry.class
com/sun/tools/corba/se/idl/NativeGen.class
com/sun/tools/corba/se/idl/Noop.class
com/sun/tools/corba/se/idl/NoPragma.class
com/sun/tools/corba/se/idl/ParameterEntry.class
com/sun/tools/corba/se/idl/ParameterGen.class
com/sun/tools/corba/se/idl/ParseException.class
com/sun/tools/corba/se/idl/Parser.class
com/sun/tools/corba/se/idl/PragmaEntry.class
com/sun/tools/corba/se/idl/PragmaGen.class
com/sun/tools/corba/se/idl/PragmaHandler.class
com/sun/tools/corba/se/idl/Preprocessor.class
com/sun/tools/corba/se/idl/PrimitiveEntry.class
com/sun/tools/corba/se/idl/PrimitiveGen.class
com/sun/tools/corba/se/idl/RepositoryID.class
com/sun/tools/corba/se/idl/Scanner.class
com/sun/tools/corba/se/idl/ScannerData.class
com/sun/tools/corba/se/idl/SequenceEntry.class
com/sun/tools/corba/se/idl/SequenceGen.class
com/sun/tools/corba/se/idl/som/cff/FileLocator.class
com/sun/tools/corba/se/idl/som/cff/Messages.class
com/sun/tools/corba/se/idl/som/cff/NamedDataInputStream.class
com/sun/tools/corba/se/idl/som/idlemit/MetaPragma.class
com/sun/tools/corba/se/idl/StringEntry.class
com/sun/tools/corba/se/idl/StringGen.class
com/sun/tools/corba/se/idl/StructEntry.class
com/sun/tools/corba/se/idl/StructGen.class
com/sun/tools/corba/se/idl/SymtabEntry.class
com/sun/tools/corba/se/idl/SymtabFactory.class
com/sun/tools/corba/se/idl/toJavaPortable/Arguments.class
com/sun/tools/corba/se/idl/toJavaPortable/AttributeGen.class
com/sun/tools/corba/se/idl/toJavaPortable/AttributeGen24.class
com/sun/tools/corba/se/idl/toJavaPortable/AuxGen.class
com/sun/tools/corba/se/idl/toJavaPortable/Compile.class
com/sun/tools/corba/se/idl/toJavaPortable/ConstGen.class
com/sun/tools/corba/se/idl/toJavaPortable/DefaultFactory.class
com/sun/tools/corba/se/idl/toJavaPortable/EnumGen.class
com/sun/tools/corba/se/idl/toJavaPortable/ExceptionGen.class
com/sun/tools/corba/se/idl/toJavaPortable/Factories.class
com/sun/tools/corba/se/idl/toJavaPortable/ForwardValueGen.class
com/sun/tools/corba/se/idl/toJavaPortable/GenFactory.class
com/sun/tools/corba/se/idl/toJavaPortable/Helper.class
com/sun/tools/corba/se/idl/toJavaPortable/Helper24.class
com/sun/tools/corba/se/idl/toJavaPortable/Holder.class
com/sun/tools/corba/se/idl/toJavaPortable/InterfaceGen.class
com/sun/tools/corba/se/idl/toJavaPortable/JavaGenerator.class
com/sun/tools/corba/se/idl/toJavaPortable/MethodGen.class
com/sun/tools/corba/se/idl/toJavaPortable/MethodGen24.class
com/sun/tools/corba/se/idl/toJavaPortable/MethodGenClone24.class
com/sun/tools/corba/se/idl/toJavaPortable/ModuleGen.class
com/sun/tools/corba/se/idl/toJavaPortable/NameModifier.class
com/sun/tools/corba/se/idl/toJavaPortable/NameModifierImpl.class
com/sun/tools/corba/se/idl/toJavaPortable/NativeGen.class
com/sun/tools/corba/se/idl/toJavaPortable/PrimitiveGen.class
com/sun/tools/corba/se/idl/toJavaPortable/SequenceGen.class
com/sun/tools/corba/se/idl/toJavaPortable/Skeleton.class
com/sun/tools/corba/se/idl/toJavaPortable/StringGen.class
com/sun/tools/corba/se/idl/toJavaPortable/StructGen.class
com/sun/tools/corba/se/idl/toJavaPortable/Stub.class
Next part >>

⇒ JRE 6 alt-rt.jar - Alternative RT (RunTime)

⇐ JDK 6 sa-jdi.jar - HSDB (Hotspot Debugger)

⇑ Download and Use JDK 6

⇑⇑ FAQ for JDK (Java Development Kit)