JDK 7 sa-jdi.jar is the JAR file for JDK 7 SA (Serviceability Agent) HSDB (Hotspot Debugger) tools. It contains Java classes to support different SA HSDB tool:

sun.jvm.hotspot.CLHSDB - Supports the CL (Command Line) version of SA HSDB. 
sun.jvm.hotspot.HSDB - Supports the GUI (Graphical User Interface) version of SA HSDB. 
sun.jvm.hotspot.tools.soql.JSDB - Supports the JSDB (JavaScript Debugger).
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JAR File Information:

Directory of C:\fyicenter\jdk-1.7.0_80\lib
       2,415,568 sa-jdi.jar

Package Content:

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sun/jvm/hotspot/ui/ThreadInfoPanel.class
sun/jvm/hotspot/ui/tree/BadAddressTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/BadOopTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/BooleanTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/CharTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/CStringTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/CTypeTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/DoubleTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/FieldTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/FloatTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/LongTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/OopTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/RevPtrsTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/RootTreeNodeAdapter.class
sun/jvm/hotspot/ui/tree/SimpleTreeGroupNode.class
sun/jvm/hotspot/ui/tree/SimpleTreeModel.class
sun/jvm/hotspot/ui/tree/SimpleTreeNode.class
sun/jvm/hotspot/ui/treetable/AbstractTreeTableModel.class
sun/jvm/hotspot/ui/treetable/JTreeTable.class
sun/jvm/hotspot/ui/treetable/SimpleTreeTableModel.class
sun/jvm/hotspot/ui/treetable/TreeTableModel.class
sun/jvm/hotspot/ui/treetable/TreeTableModelAdapter.class
sun/jvm/hotspot/ui/VMFlagsPanel.class
sun/jvm/hotspot/ui/VMVersionInfoPanel.class
sun/jvm/hotspot/utilities/AbstractHeapGraphWriter.class
sun/jvm/hotspot/utilities/AddressOps.class
sun/jvm/hotspot/utilities/AltPlatformInfo.class
sun/jvm/hotspot/utilities/Assert.class
sun/jvm/hotspot/utilities/AssertionFailure.class
sun/jvm/hotspot/utilities/BasicHashtable.class
sun/jvm/hotspot/utilities/BasicHashtableEntry.class
sun/jvm/hotspot/utilities/BitMap.class
sun/jvm/hotspot/utilities/BitMapClosure.class
sun/jvm/hotspot/utilities/Bits.class
sun/jvm/hotspot/utilities/ConstantTag.class
sun/jvm/hotspot/utilities/ConstIterator.class
sun/jvm/hotspot/utilities/CPPExpressions.class
sun/jvm/hotspot/utilities/CStringUtilities.class
sun/jvm/hotspot/utilities/FindObjectByType.class
sun/jvm/hotspot/utilities/GenericGrowableArray.class
sun/jvm/hotspot/utilities/GrowableArray.class
sun/jvm/hotspot/utilities/Hashtable.class
sun/jvm/hotspot/utilities/HashtableBucket.class
sun/jvm/hotspot/utilities/HashtableEntry.class
sun/jvm/hotspot/utilities/HeapGraphWriter.class
sun/jvm/hotspot/utilities/HeapGXLWriter.class
sun/jvm/hotspot/utilities/HeapHprofBinWriter.class
sun/jvm/hotspot/utilities/HeapProgressThunk.class
sun/jvm/hotspot/utilities/IntegerEnum.class
sun/jvm/hotspot/utilities/Interval.class
sun/jvm/hotspot/utilities/IntervalNode.class
sun/jvm/hotspot/utilities/IntervalTree.class
sun/jvm/hotspot/utilities/LivenessAnalysis.class
sun/jvm/hotspot/utilities/LivenessPath.class
sun/jvm/hotspot/utilities/LivenessPathElement.class
sun/jvm/hotspot/utilities/LivenessPathList.class
sun/jvm/hotspot/utilities/MarkBits.class
sun/jvm/hotspot/utilities/memo/MemoizedBoolean.class
sun/jvm/hotspot/utilities/memo/MemoizedByte.class
sun/jvm/hotspot/utilities/memo/MemoizedChar.class
sun/jvm/hotspot/utilities/memo/MemoizedDouble.class
sun/jvm/hotspot/utilities/memo/MemoizedFloat.class
sun/jvm/hotspot/utilities/memo/MemoizedInt.class
sun/jvm/hotspot/utilities/memo/MemoizedLong.class
sun/jvm/hotspot/utilities/memo/MemoizedObject.class
sun/jvm/hotspot/utilities/memo/MemoizedShort.class
sun/jvm/hotspot/utilities/MessageQueue.class
sun/jvm/hotspot/utilities/MessageQueueBackend.class
sun/jvm/hotspot/utilities/ObjectReader.class
sun/jvm/hotspot/utilities/PlatformInfo.class
sun/jvm/hotspot/utilities/PointerFinder.class
sun/jvm/hotspot/utilities/PointerLocation.class
sun/jvm/hotspot/utilities/ProcImageClassLoader.class
sun/jvm/hotspot/utilities/ProgressiveHeapVisitor.class
sun/jvm/hotspot/utilities/RBColor.class
sun/jvm/hotspot/utilities/RBNode.class
sun/jvm/hotspot/utilities/RBTree.class
sun/jvm/hotspot/utilities/ReversePtrs.class
sun/jvm/hotspot/utilities/ReversePtrsAnalysis.class
sun/jvm/hotspot/utilities/RobustOopDeterminator.class
sun/jvm/hotspot/utilities/soql/Callable.class
sun/jvm/hotspot/utilities/soql/DefaultScriptObject.class
sun/jvm/hotspot/utilities/soql/InvocableCallable.class
sun/jvm/hotspot/utilities/soql/JSJavaArray.class
sun/jvm/hotspot/utilities/soql/JSJavaArrayKlass.class
sun/jvm/hotspot/utilities/soql/JSJavaClass.class
sun/jvm/hotspot/utilities/soql/JSJavaFactory.class
sun/jvm/hotspot/utilities/soql/JSJavaFactoryImpl.class
sun/jvm/hotspot/utilities/soql/JSJavaField.class
sun/jvm/hotspot/utilities/soql/JSJavaFrame.class
sun/jvm/hotspot/utilities/soql/JSJavaHeap.class
sun/jvm/hotspot/utilities/soql/JSJavaInstance.class
sun/jvm/hotspot/utilities/soql/JSJavaInstanceKlass.class
sun/jvm/hotspot/utilities/soql/JSJavaKlass.class
sun/jvm/hotspot/utilities/soql/JSJavaMethod.class
sun/jvm/hotspot/utilities/soql/JSJavaObjArray.class
sun/jvm/hotspot/utilities/soql/JSJavaObjArrayKlass.class
sun/jvm/hotspot/utilities/soql/JSJavaObject.class
sun/jvm/hotspot/utilities/soql/JSJavaScriptEngine.class
sun/jvm/hotspot/utilities/soql/JSJavaString.class
sun/jvm/hotspot/utilities/soql/JSJavaThread.class
sun/jvm/hotspot/utilities/soql/JSJavaTypeArray.class
sun/jvm/hotspot/utilities/soql/JSJavaTypeArrayKlass.class
sun/jvm/hotspot/utilities/soql/JSJavaVM.class
sun/jvm/hotspot/utilities/soql/JSList.class
sun/jvm/hotspot/utilities/soql/JSMap.class
sun/jvm/hotspot/utilities/soql/MapScriptObject.class
sun/jvm/hotspot/utilities/soql/MethodCallable.class
sun/jvm/hotspot/utilities/soql/ObjectVisitor.class
sun/jvm/hotspot/utilities/soql/ScriptObject.class
sun/jvm/hotspot/utilities/soql/SOQLEngine.class
sun/jvm/hotspot/utilities/soql/SOQLException.class
sun/jvm/hotspot/utilities/soql/SOQLQuery.class
sun/jvm/hotspot/utilities/StreamMonitor.class
sun/jvm/hotspot/utilities/SystemDictionaryHelper.class
sun/jvm/hotspot/utilities/TwoOopHashtable.class
sun/jvm/hotspot/utilities/UnsupportedPlatformException.class
sun/jvm/hotspot/utilities/WorkerThread.class
sun/jvm/hotspot/Win32VtblAccess.class

⇒ JDK 7 tools.jar - JDK Tools

⇐ JDK 7 jconsole.jar - JConsole

⇑ Download and Use JDK 7

⇑⇑ FAQ for JDK (Java Development Kit)