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:

sun/tools/asm/ArrayData.class
sun/tools/asm/Assembler.class
sun/tools/asm/CatchData.class
sun/tools/asm/ClassConstantData.class
sun/tools/asm/ConstantPool.class
sun/tools/asm/ConstantPoolData.class
sun/tools/asm/Cover.class
sun/tools/asm/FieldConstantData.class
sun/tools/asm/Instruction.class
sun/tools/asm/Label.class
sun/tools/asm/LocalVariable.class
sun/tools/asm/LocalVariableTable.class
sun/tools/asm/NameAndTypeConstantData.class
sun/tools/asm/NameAndTypeData.class
sun/tools/asm/NumberConstantData.class
sun/tools/asm/StringConstantData.class
sun/tools/asm/StringExpressionConstantData.class
sun/tools/asm/SwitchData.class
sun/tools/asm/SwitchDataEnumeration.class
sun/tools/asm/TryData.class
sun/tools/hprof/Tracker.class
sun/tools/jar/CommandLine.class
sun/tools/jar/JarException.class
sun/tools/jar/JarImageSource.class
sun/tools/jar/JarVerifierStream.class
sun/tools/jar/Main.class
sun/tools/jar/Manifest.class
sun/tools/jar/resources/jar.class
sun/tools/jar/resources/jar_de.class
sun/tools/jar/resources/jar_es.class
sun/tools/jar/resources/jar_fr.class
sun/tools/jar/resources/jar_it.class
sun/tools/jar/resources/jar_ja.class
sun/tools/jar/resources/jar_ko.class
sun/tools/jar/resources/jar_pt_BR.class
sun/tools/jar/resources/jar_sv.class
sun/tools/jar/resources/jar_zh_CN.class
sun/tools/jar/resources/jar_zh_HK.class
sun/tools/jar/resources/jar_zh_TW.class
sun/tools/jar/SignatureFile.class
sun/tools/java/AmbiguousClass.class
sun/tools/java/AmbiguousMember.class
sun/tools/java/ArrayType.class
sun/tools/java/BinaryAttribute.class
sun/tools/java/BinaryClass.class
sun/tools/java/BinaryCode.class
sun/tools/java/BinaryConstantPool.class
sun/tools/java/BinaryExceptionHandler.class
sun/tools/java/BinaryMember.class
sun/tools/java/ClassDeclaration.class
sun/tools/java/ClassDefinition.class
sun/tools/java/ClassFile.class
sun/tools/java/ClassNotFound.class
sun/tools/java/ClassPath.class
sun/tools/java/ClassPathEntry.class
sun/tools/java/ClassType.class
sun/tools/java/CompilerError.class
sun/tools/java/Constants.class
sun/tools/java/Environment.class
sun/tools/java/Identifier.class
sun/tools/java/IdentifierToken.class
sun/tools/java/ImportEnvironment.class
sun/tools/java/Imports.class
sun/tools/java/MemberDefinition.class
sun/tools/java/MethodSet.class
sun/tools/java/MethodType.class
sun/tools/java/Package.class
sun/tools/java/Parser.class
sun/tools/java/ParserActions.class
sun/tools/java/RuntimeConstants.class
sun/tools/java/Scanner.class
sun/tools/java/ScannerInputReader.class
sun/tools/java/SyntaxError.class
sun/tools/java/Type.class
sun/tools/javac/BatchEnvironment.class
sun/tools/javac/BatchParser.class
sun/tools/javac/CompilerMember.class
sun/tools/javac/ErrorConsumer.class
sun/tools/javac/ErrorMessage.class
sun/tools/javac/Main.class
sun/tools/javac/SourceClass.class
sun/tools/javac/SourceMember.class
sun/tools/javap/AttrData.class
sun/tools/javap/ClassData.class
sun/tools/javap/Constants.class
sun/tools/javap/CPX.class
sun/tools/javap/CPX2.class
sun/tools/javap/FieldData.class
sun/tools/javap/InnerClassData.class
sun/tools/javap/JavapEnvironment.class
sun/tools/javap/JavapPrinter.class
sun/tools/javap/LineNumData.class
sun/tools/javap/LocVarData.class
sun/tools/javap/Main.class
sun/tools/javap/MethodData.class
sun/tools/javap/oldjavap/ConstantPrinter.class
sun/tools/javap/oldjavap/JavaP.class
sun/tools/javap/oldjavap/JavaPBinaryCode.class
sun/tools/javap/oldjavap/JavaPClassPrinter.class
sun/tools/javap/oldjavap/JavaPEnvironment.class
sun/tools/javap/RuntimeConstants.class
sun/tools/javap/StackMapData.class
sun/tools/javap/StackMapTableData.class
sun/tools/javap/Tables.class
sun/tools/javap/TrapData.class
sun/tools/javap/TypeSignature.class
sun/tools/jps/Arguments.class
sun/tools/jps/Jps.class
sun/tools/jstat/Alignment.class
sun/tools/jstat/Arguments.class
sun/tools/jstat/AscendingMonitorComparator.class
sun/tools/jstat/Closure.class
sun/tools/jstat/ColumnFormat.class
sun/tools/jstat/DescendingMonitorComparator.class
sun/tools/jstat/Expression.class
sun/tools/jstat/ExpressionEvaluator.class
sun/tools/jstat/ExpressionExecuter.class
sun/tools/jstat/ExpressionResolver.class
sun/tools/jstat/HeaderClosure.class
sun/tools/jstat/Identifier.class
sun/tools/jstat/Jstat.class
sun/tools/jstat/JStatLogger.class
sun/tools/jstat/Literal.class
sun/tools/jstat/Operator.class
sun/tools/jstat/OptionFinder.class
sun/tools/jstat/OptionFormat.class
sun/tools/jstat/OptionLister.class
sun/tools/jstat/OptionOutputFormatter.class
sun/tools/jstat/OutputFormatter.class
sun/tools/jstat/Parser.class
sun/tools/jstat/ParserException.class
sun/tools/jstat/RawOutputFormatter.class
sun/tools/jstat/RowClosure.class
sun/tools/jstat/Scale.class
sun/tools/jstat/SymbolResolutionClosure.class
sun/tools/jstat/SyntaxException.class
sun/tools/jstat/Token.class
sun/tools/jstatd/Jstatd.class
sun/tools/jstatd/RemoteHostImpl.class
sun/tools/jstatd/RemoteVmImpl.class
sun/tools/native2ascii/A2NFilter.class
sun/tools/native2ascii/Main.class
sun/tools/native2ascii/N2AFilter.class
sun/tools/native2ascii/resources/MsgNative2ascii.class
sun/tools/native2ascii/resources/MsgNative2ascii_ja.class
sun/tools/native2ascii/resources/MsgNative2ascii_zh_CN.class
sun/tools/serialver/Res.class
sun/tools/serialver/SerialVer.class
sun/tools/serialver/SerialVerFrame.class
sun/tools/tree/AddExpression.class
sun/tools/tree/AndExpression.class
sun/tools/tree/ArrayAccessExpression.class
sun/tools/tree/ArrayExpression.class
sun/tools/tree/AssignAddExpression.class
sun/tools/tree/AssignBitAndExpression.class
sun/tools/tree/AssignBitOrExpression.class
sun/tools/tree/AssignBitXorExpression.class
sun/tools/tree/AssignDivideExpression.class
sun/tools/tree/AssignExpression.class
sun/tools/tree/AssignMultiplyExpression.class
sun/tools/tree/AssignOpExpression.class
sun/tools/tree/AssignRemainderExpression.class
sun/tools/tree/AssignShiftLeftExpression.class
sun/tools/tree/AssignShiftRightExpression.class
sun/tools/tree/AssignSubtractExpression.class
sun/tools/tree/AssignUnsignedShiftRightExpression.class
sun/tools/tree/BinaryArithmeticExpression.class
sun/tools/tree/BinaryAssignExpression.class
sun/tools/tree/BinaryBitExpression.class
sun/tools/tree/BinaryCompareExpression.class
sun/tools/tree/BinaryEqualityExpression.class
sun/tools/tree/BinaryExpression.class
sun/tools/tree/BinaryLogicalExpression.class
sun/tools/tree/BinaryShiftExpression.class
sun/tools/tree/BitAndExpression.class
sun/tools/tree/BitNotExpression.class
sun/tools/tree/BitOrExpression.class
sun/tools/tree/BitXorExpression.class
sun/tools/tree/BooleanExpression.class
sun/tools/tree/BreakStatement.class
sun/tools/tree/ByteExpression.class
sun/tools/tree/CaseStatement.class
sun/tools/tree/CastExpression.class
sun/tools/tree/CatchStatement.class
sun/tools/tree/CharExpression.class
sun/tools/tree/CheckContext.class
sun/tools/tree/CodeContext.class
sun/tools/tree/CommaExpression.class
sun/tools/tree/CompoundStatement.class
sun/tools/tree/ConditionalExpression.class
sun/tools/tree/ConditionVars.class
sun/tools/tree/ConstantExpression.class
sun/tools/tree/Context.class
sun/tools/tree/ContextEnvironment.class
sun/tools/tree/ContinueStatement.class
sun/tools/tree/ConvertExpression.class
sun/tools/tree/DeclarationStatement.class
sun/tools/tree/DivideExpression.class
sun/tools/tree/DivRemExpression.class
sun/tools/tree/DoStatement.class
sun/tools/tree/DoubleExpression.class
sun/tools/tree/EqualExpression.class
sun/tools/tree/Expression.class
sun/tools/tree/ExpressionStatement.class
sun/tools/tree/ExprExpression.class
sun/tools/tree/FieldExpression.class
sun/tools/tree/FieldUpdater.class
sun/tools/tree/FinallyStatement.class
sun/tools/tree/FloatExpression.class
sun/tools/tree/ForStatement.class
sun/tools/tree/GreaterExpression.class
sun/tools/tree/GreaterOrEqualExpression.class
sun/tools/tree/IdentifierExpression.class
sun/tools/tree/IfStatement.class
sun/tools/tree/IncDecExpression.class
sun/tools/tree/InlineMethodExpression.class
sun/tools/tree/InlineNewInstanceExpression.class
sun/tools/tree/InlineReturnStatement.class
sun/tools/tree/InstanceOfExpression.class
sun/tools/tree/IntegerExpression.class
sun/tools/tree/IntExpression.class
sun/tools/tree/LengthExpression.class
sun/tools/tree/LessExpression.class
sun/tools/tree/LessOrEqualExpression.class
sun/tools/tree/LocalMember.class
sun/tools/tree/LongExpression.class
sun/tools/tree/MethodExpression.class
sun/tools/tree/MultiplyExpression.class
sun/tools/tree/NaryExpression.class
sun/tools/tree/NegativeExpression.class
sun/tools/tree/NewArrayExpression.class
sun/tools/tree/NewInstanceExpression.class
sun/tools/tree/Node.class
sun/tools/tree/NotEqualExpression.class
sun/tools/tree/NotExpression.class
sun/tools/tree/NullExpression.class
sun/tools/tree/OrExpression.class
sun/tools/tree/PositiveExpression.class
sun/tools/tree/PostDecExpression.class
sun/tools/tree/PostIncExpression.class
sun/tools/tree/PreDecExpression.class
sun/tools/tree/PreIncExpression.class
sun/tools/tree/RemainderExpression.class
sun/tools/tree/ReturnStatement.class
sun/tools/tree/ShiftLeftExpression.class
sun/tools/tree/ShiftRightExpression.class
sun/tools/tree/ShortExpression.class
sun/tools/tree/Statement.class
sun/tools/tree/StringExpression.class
sun/tools/tree/SubtractExpression.class
sun/tools/tree/SuperExpression.class
sun/tools/tree/SwitchStatement.class
sun/tools/tree/SynchronizedStatement.class
sun/tools/tree/ThisExpression.class
sun/tools/tree/ThrowStatement.class
sun/tools/tree/TryStatement.class
sun/tools/tree/TypeExpression.class
sun/tools/tree/UnaryExpression.class
sun/tools/tree/UnsignedShiftRightExpression.class
sun/tools/tree/UplevelReference.class
sun/tools/tree/VarDeclarationStatement.class
sun/tools/tree/Vset.class
sun/tools/tree/WhileStatement.class
sun/tools/util/CommandLine.class
sun/tools/util/ModifierFilter.class
sun/security/tools/JarBASE64Encoder.class
sun/security/tools/JarSigner.class
sun/security/tools/JarSignerParameters.class
sun/security/tools/JarSignerResources.class
sun/security/tools/JarSignerResources_ja.class
sun/security/tools/JarSignerResources_zh_CN.class
sun/security/tools/SignatureFile.class
sun/security/tools/TimestampedSigner.class
sun/rmi/rmic/BatchEnvironment.class
sun/rmi/rmic/Constants.class
sun/rmi/rmic/Generator.class
sun/rmi/rmic/iiop/AbstractType.class
sun/rmi/rmic/iiop/ArrayType.class
sun/rmi/rmic/iiop/BatchEnvironment.class
sun/rmi/rmic/iiop/ClassPathLoader.class
sun/rmi/rmic/iiop/ClassType.class
sun/rmi/rmic/iiop/CompoundType.class
sun/rmi/rmic/iiop/Constants.class
sun/rmi/rmic/iiop/ContextElement.class
sun/rmi/rmic/iiop/ContextStack.class
sun/rmi/rmic/iiop/DirectoryLoader.class
sun/rmi/rmic/iiop/Generator.class
sun/rmi/rmic/iiop/IDLGenerator.class
sun/rmi/rmic/iiop/IDLNames.class
sun/rmi/rmic/iiop/ImplementationType.class
sun/rmi/rmic/iiop/InterfaceType.class
sun/rmi/rmic/iiop/NameContext.class
sun/rmi/rmic/iiop/NCClassType.class
sun/rmi/rmic/iiop/NCInterfaceType.class
sun/rmi/rmic/iiop/Null.class
sun/rmi/rmic/iiop/PrimitiveType.class
sun/rmi/rmic/iiop/PrintGenerator.class
sun/rmi/rmic/iiop/RemoteType.class
sun/rmi/rmic/iiop/SpecialClassType.class
sun/rmi/rmic/iiop/SpecialInterfaceType.class
sun/rmi/rmic/iiop/StaticStringsHash.class
sun/rmi/rmic/iiop/StringComparator.class
sun/rmi/rmic/iiop/StubGenerator.class
sun/rmi/rmic/iiop/Type.class
sun/rmi/rmic/iiop/TypeContext.class
sun/rmi/rmic/iiop/UserExceptionComparator.class
sun/rmi/rmic/iiop/Util.class
sun/rmi/rmic/iiop/ValueType.class
sun/rmi/rmic/IndentingWriter.class
sun/rmi/rmic/Main.class
sun/rmi/rmic/Names.class
sun/rmi/rmic/newrmic/BatchEnvironment.class
sun/rmi/rmic/newrmic/Constants.class
sun/rmi/rmic/newrmic/Generator.class
sun/rmi/rmic/newrmic/IndentingWriter.class
sun/rmi/rmic/newrmic/jrmp/Constants.class
sun/rmi/rmic/newrmic/jrmp/JrmpGenerator.class
sun/rmi/rmic/newrmic/jrmp/RemoteClass.class
sun/rmi/rmic/newrmic/jrmp/StubSkeletonWriter.class
sun/rmi/rmic/newrmic/jrmp/Util.class
sun/rmi/rmic/newrmic/Main.class
sun/rmi/rmic/newrmic/Resources.class
sun/rmi/rmic/RemoteClass.class
sun/rmi/rmic/RMIConstants.class
sun/rmi/rmic/RMIGenerator.class
sun/rmi/rmic/Util.class
sun/applet/AppContextCreator.class
sun/applet/AppletAudioClip.class
sun/applet/AppletClassLoader.class
sun/applet/AppletEvent.class
sun/applet/AppletEventMulticaster.class
sun/applet/AppletIllegalArgumentException.class
sun/applet/AppletImageRef.class
sun/applet/AppletIOException.class
sun/applet/AppletListener.class
sun/applet/AppletMessageHandler.class
sun/applet/AppletObjectInputStream.class
sun/applet/AppletPanel.class
sun/applet/AppletProps.class
sun/applet/AppletPropsErrorDialog.class
sun/applet/AppletResourceLoader.class
sun/applet/AppletSecurity.class
sun/applet/AppletSecurityException.class
sun/applet/AppletThreadGroup.class
sun/applet/AppletViewer.class
sun/applet/AppletViewerFactory.class
sun/applet/AppletViewerPanel.class
sun/applet/Main.class
sun/applet/resources/MsgAppletViewer.class
sun/applet/resources/MsgAppletViewer_de.class
sun/applet/resources/MsgAppletViewer_es.class
sun/applet/resources/MsgAppletViewer_fr.class
sun/applet/resources/MsgAppletViewer_it.class
sun/applet/resources/MsgAppletViewer_ja.class
sun/applet/resources/MsgAppletViewer_ko.class
sun/applet/resources/MsgAppletViewer_pt_BR.class
sun/applet/resources/MsgAppletViewer_sv.class
sun/applet/resources/MsgAppletViewer_zh_CN.class
sun/applet/resources/MsgAppletViewer_zh_HK.class
sun/applet/resources/MsgAppletViewer_zh_TW.class
sun/applet/StdAppletViewerFactory.class
sun/applet/TextFrame.class
sun/jvmstat/monitor/AbstractMonitor.class
sun/jvmstat/monitor/ByteArrayMonitor.class
sun/jvmstat/monitor/event/HostEvent.class
sun/jvmstat/monitor/event/HostListener.class
sun/jvmstat/monitor/event/MonitorStatusChangeEvent.class
sun/jvmstat/monitor/event/VmEvent.class
sun/jvmstat/monitor/event/VmListener.class
sun/jvmstat/monitor/event/VmStatusChangeEvent.class
sun/jvmstat/monitor/HostIdentifier.class
sun/jvmstat/monitor/IntegerMonitor.class
sun/jvmstat/monitor/LongMonitor.class
sun/jvmstat/monitor/Monitor.class
sun/jvmstat/monitor/MonitoredHost.class
sun/jvmstat/monitor/MonitoredVm.class
sun/jvmstat/monitor/MonitoredVmUtil.class
sun/jvmstat/monitor/MonitorException.class
sun/jvmstat/monitor/remote/BufferedMonitoredVm.class
sun/jvmstat/monitor/remote/RemoteHost.class
sun/jvmstat/monitor/remote/RemoteVm.class
sun/jvmstat/monitor/StringMonitor.class
sun/jvmstat/monitor/VmIdentifier.class
sun/jvmstat/perfdata/monitor/AbstractMonitoredVm.class
sun/jvmstat/perfdata/monitor/AbstractPerfDataBuffer.class
sun/jvmstat/perfdata/monitor/AbstractPerfDataBufferPrologue.class
sun/jvmstat/perfdata/monitor/AliasFileParser.class
sun/jvmstat/perfdata/monitor/CountedTimerTask.class
sun/jvmstat/perfdata/monitor/CountedTimerTaskUtils.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)