- All Superinterfaces:
Mirror
- All Known Subinterfaces:
ArrayReference
,BooleanValue
,ByteValue
,CharValue
,ClassLoaderReference
,ClassObjectReference
,DoubleValue
,FloatValue
,IntegerValue
,LongValue
,ModuleReference
,ObjectReference
,PrimitiveValue
,ShortValue
,StringReference
,ThreadGroupReference
,ThreadReference
,VoidValue
The mirror for a value in the target VM.
This interface is the root of a
value hierarchy encompassing primitive values and object values.
Some examples of where values may be accessed:
ObjectReference.getValue(Field)
- value of a field StackFrame.getValue(LocalVariable)
- value of a variable VirtualMachine.mirrorOf(double)
- created in the target VM by the JDI client ModificationWatchpointEvent.valueToBe()
- returned with an event
The following tables illustrate which subinterfaces of Value are used to mirror values in the target VM --
Kind of value | For example - expression in target |
Is mirrored as an instance of |
Type of valueValue.type() |
---|---|---|---|
a boolean | true |
BooleanValue |
BooleanType |
a byte | (byte)4 |
ByteValue |
ByteType |
a char | 'a' |
CharValue |
CharType |
a double | 3.1415926 |
DoubleValue |
DoubleType |
a float | 2.5f |
FloatValue |
FloatType |
an int | 22 |
IntegerValue |
IntegerType |
a long | 1024L |
LongValue |
LongType |
a short | (short)12 |
ShortValue |
ShortType |
a void | VoidValue |
VoidType |
Kind of value | For example - expression in target |
Is mirrored as an instance of |
Type of valueValue.type() |
---|---|---|---|
a class instance | this |
ObjectReference |
ClassType |
an array | new int[5] |
ArrayReference |
ArrayType |
a string | "hello" |
StringReference |
ClassType |
a thread | Thread.currentThread() |
ThreadReference |
ClassType |
a thread group | Thread.currentThread() .getThreadGroup() |
ThreadGroupReference |
ClassType |
a java.lang.Class instance |
this.getClass() |
ClassObjectReference |
ClassType |
a class loader | this.getClass() .getClassLoader() |
ClassLoaderReference |
ClassType |
Kind of value | For example - expression in target |
Is mirrored as | Type of value |
---|---|---|---|
null | null |
null |
n/a |
- Since:
- 1.3
-
Method Summary
Methods declared in interface com.sun.jdi.Mirror
toString, virtualMachine