Package org.apache.bcel.generic

Interface Summary
AllocationInstruction	Denote family of instructions that allocates space in the heap.
ClassObserver	Implement this interface if you're interested in changes to a ClassGen object and register yourself with addObserver().
CompoundInstruction	Wrapper class for `compound' operations, virtual instructions that don't exist as byte code, but give a useful meaning.
ConstantPushInstruction	Denotes a push instruction that produces a literal on the stack such as SIPUSH, BIPUSH, ICONST, etc.
ExceptionThrower	Denote an instruction that may throw a run-time or a linking exception (or both) during execution.
FieldObserver	Imnplement this interface if you're interested in changes to a FieldGen object and register yourself with addObserver().
IndexedInstruction	Denote entity that refers to an index, e.g.
InstructionComparator	Equality of instructions isn't clearly to be defined.
InstructionConstants	This interface contains shareable instruction objects.
InstructionListObserver	Implement this interface if you're interested in changes to an InstructionList object and register yourself with addObserver().
InstructionTargeter	Denote that a class targets InstructionHandles within an InstructionList.
LoadClass	Denotes that an instruction may start the process of loading and resolving the referenced class in the Virtual Machine.
MethodObserver	Implement this interface if you're interested in changes to a MethodGen object and register yourself with addObserver().
NamedAndTyped	Denote entity that has both name and type.
PopInstruction	Denotes an unparameterized instruction to pop a value on top from the stack, such as ISTORE, POP, PUTSTATIC.
PushInstruction	Denotes an unparameterized instruction to produce a value on top of the stack, such as ILOAD, LDC, SIPUSH, DUP, ICONST, etc.
StackConsumer	Denote an instruction that may consume a value from the stack.
StackProducer	Denote an instruction that may produce a value on top of the stack (this excludes DUP_X1, e.g.)
TypedInstruction	Get the type associated with an instruction, int for ILOAD, or the type of the field of a PUTFIELD instruction, e.g..
UnconditionalBranch	Denotes an instruction to perform an unconditional branch, i.e., GOTO, JSR.
VariableLengthInstruction	Denotes an instruction to be a variable length instruction, such as GOTO, JSR, LOOKUPSWITCH and TABLESWITCH.
Visitor	Interface implementing the Visitor pattern programming style.

Class Summary
AALOAD	AALOAD - Load reference from array Stack: ..., arrayref, index -> value
AASTORE	AASTORE - Store into reference array Stack: ..., arrayref, index, value -> ...
ACONST_NULL	ACONST_NULL - Push null reference Stack: ...
ALOAD	ALOAD - Load reference from local variable Stack: ...
ANEWARRAY	ANEWARRAY - Create new array of references Stack: ..., count -> ..., arrayref
ArithmeticInstruction	Super class for the family of arithmetic instructions.
ArrayInstruction	Super class for instructions dealing with array access such as IALOAD.
ArrayType	Denotes array type, such as int[][]
ARETURN	ARETURN - Return reference from method Stack: ..., objectref -> <empty>
ARRAYLENGTH	ARRAYLENGTH - Get length of array Stack: ..., arrayref -> ..., length
ASTORE	ASTORE - Store reference into local variable Stack ..., objectref -> ...
ATHROW	ATHROW - Throw exception Stack: ..., objectref -> objectref
BALOAD	BALOAD - Load byte or boolean from array Stack: ..., arrayref, index -> ..., value
BASTORE	BASTORE - Store into byte or boolean array Stack: ..., arrayref, index, value -> ...
BasicType	Denotes basic type such as int.
BIPUSH	BIPUSH - Push byte on stack Stack: ...
BranchHandle	BranchHandle is returned by specialized InstructionList.append() whenever a BranchInstruction is appended.
BranchInstruction	Abstract super class for branching instructions like GOTO, IFEQ, etc..
BREAKPOINT	BREAKPOINT, JVM dependent, ignored by default
CALOAD	CALOAD - Load char from array Stack: ..., arrayref, index -> ..., value
CASTORE	CASTORE - Store into char array Stack: ..., arrayref, index, value -> ...
CHECKCAST	CHECKCAST - Check whether object is of given type Stack: ..., objectref -> ..., objectref
ClassGen	Template class for building up a java class.
ClassGenException	Thrown on internal errors.
CodeExceptionGen	This class represents an exception handler, i.e., specifies the region where a handler is active and an instruction where the actual handling is done.
ConstantPoolGen	This class is used to build up a constant pool.
ConversionInstruction	Super class for the x2y family of instructions.
CPInstruction	Abstract super class for instructions that use an index into the constant pool such as LDC, INVOKEVIRTUAL, etc.
D2F	D2F - Convert double to float Stack: ..., value.word1, value.word2 -> ..., result
D2I	D2I - Convert double to int Stack: ..., value.word1, value.word2 -> ..., result
D2L	D2L - Convert double to long Stack: ..., value.word1, value.word2 -> ..., result.word1, result.word2
DADD	DADD - Add doubles Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result1.word2
DALOAD	DALOAD - Load double from array Stack: ..., arrayref, index -> ..., result.word1, result.word2
DASTORE	DASTORE - Store into double array Stack: ..., arrayref, index, value.word1, value.word2 -> ...
DCMPG	DCMPG - Compare doubles: value1 > value2 Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result
DCMPL	DCMPL - Compare doubles: value1 <32value2 Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result
DCONST	DCONST - Push 0.0 or 1.0, other values cause an exception Stack: ...
DDIV	DDIV - Divide doubles Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
DLOAD	DLOAD - Load double from local variable Stack ...
DMUL	DMUL - Multiply doubles Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
DNEG	DNEG - Negate double Stack: ..., value.word1, value.word2 -> ..., result.word1, result.word2
DREM	DREM - Remainder of doubles Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
DRETURN	DRETURN - Return double from method Stack: ..., value.word1, value.word2 -> <empty>
DSTORE	DSTORE - Store double into local variable Stack: ..., value.word1, value.word2 -> ...
DSUB	DSUB - Substract doubles Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
DUP	DUP - Duplicate top operand stack word Stack: ..., word -> ..., word, word
DUP2	DUP2 - Duplicate two top operand stack words Stack: ..., word2, word1 -> ..., word2, word1, word2, word1
DUP2_X1	DUP2_X1 - Duplicate two top operand stack words and put three down Stack: ..., word3, word2, word1 -> ..., word2, word1, word3, word2, word1
DUP2_X2	DUP2_X2 - Duplicate two top operand stack words and put four down Stack: ..., word4, word3, word2, word1 -> ..., word2, word1, word4, word3, word2, word1
DUP_X1	DUP_X1 - Duplicate top operand stack word and put two down Stack: ..., word2, word1 -> ..., word1, word2, word1
DUP_X2	DUP_X2 - Duplicate top operand stack word and put three down Stack: ..., word3, word2, word1 -> ..., word1, word3, word2, word1
EmptyVisitor	Supplies empty method bodies to be overridden by subclasses.
F2D	F2D - Convert float to double Stack: ..., value -> ..., result.word1, result.word2
F2I	F2I - Convert float to int Stack: ..., value -> ..., result
F2L	F2L - Convert float to long Stack: ..., value -> ..., result.word1, result.word2
FADD	FADD - Add floats Stack: ..., value1, value2 -> result
FALOAD	FALOAD - Load float from array Stack: ..., arrayref, index -> ..., value
FASTORE	FASTORE - Store into float array Stack: ..., arrayref, index, value -> ...
FCMPG	FCMPG - Compare floats: value1 > value2 Stack: ..., value1, value2 -> ..., result
FCMPL	FCMPL - Compare floats: value1 <32value2 Stack: ..., value1, value2 -> ..., result
FCONST	FCONST - Push 0.0, 1.0 or 2.0, other values cause an exception Stack: ...
FDIV	FDIV - Divide floats Stack: ..., value1, value2 -> result
FieldGen	Template class for building up a field.
FieldGenOrMethodGen	Super class for FieldGen and MethodGen objects, since they have some methods in common!
FieldInstruction	Super class for the GET/PUTxxx family of instructions.
FieldOrMethod	Super class for InvokeInstruction and FieldInstruction, since they have some methods in common!
FLOAD	FLOAD - Load float from local variable Stack ...
FMUL	FMUL - Multiply floats Stack: ..., value1, value2 -> result
FNEG	FNEG - Negate float Stack: ..., value -> ..., result
FREM	FREM - Remainder of floats Stack: ..., value1, value2 -> result
FRETURN	FRETURN - Return float from method Stack: ..., value -> <empty>
FSTORE	FSTORE - Store float into local variable Stack: ..., value -> ...
FSUB	FSUB - Substract floats Stack: ..., value1, value2 -> result
GETFIELD	GETFIELD - Fetch field from object Stack: ..., objectref -> ..., value OR Stack: ..., objectref -> ..., value.word1, value.word2
GETSTATIC	GETSTATIC - Fetch static field from class Stack: ..., -> ..., value OR Stack: ..., -> ..., value.word1, value.word2
GotoInstruction	Super class for GOTO
GOTO	GOTO - Branch always (to relative offset, not absolute address)
GOTO_W	GOTO_W - Branch always (to relative offset, not absolute address)
I2B	I2B - Convert int to byte Stack: ..., value -> ..., result
I2C	I2C - Convert int to char Stack: ..., value -> ..., result
I2D	I2D - Convert int to double Stack: ..., value -> ..., result.word1, result.word2
I2F	I2F - Convert int to float Stack: ..., value -> ..., result
I2L	I2L - Convert int to long Stack: ..., value -> ..., result.word1, result.word2
I2S	I2S - Convert int to short Stack: ..., value -> ..., result
IADD	IADD - Add ints Stack: ..., value1, value2 -> result
IALOAD	IALOAD - Load int from array Stack: ..., arrayref, index -> ..., value
IAND	IAND - Bitwise AND int Stack: ..., value1, value2 -> ..., result
IASTORE	IASTORE - Store into int array Stack: ..., arrayref, index, value -> ...
ICONST	ICONST - Push value between -1, ..., 5, other values cause an exception Stack: ...
IDIV	IDIV - Divide ints Stack: ..., value1, value2 -> result
IfInstruction	Super class for the IFxxx family of instructions.
IFEQ	IFEQ - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFGE	IFGE - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFGT	IFGT - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFLE	IFLE - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFLT	IFLT - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFNE	IFNE - Branch if int comparison with zero succeeds Stack: ..., value -> ...
IFNONNULL	IFNONNULL - Branch if reference is not null Stack: ..., reference -> ...
IFNULL	IFNULL - Branch if reference is not null Stack: ..., reference -> ...
IF_ACMPEQ	IF_ACMPEQ - Branch if reference comparison succeeds Stack: ..., value1, value2 -> ...
IF_ACMPNE	IF_ACMPNE - Branch if reference comparison doesn't succeed Stack: ..., value1, value2 -> ...
IF_ICMPEQ	IF_ICMPEQ - Branch if int comparison succeeds Stack: ..., value1, value2 -> ...
IF_ICMPGE	IF_ICMPGE - Branch if int comparison succeeds Stack: ..., value1, value2 -> ...
IF_ICMPGT	IF_ICMPGT - Branch if int comparison succeeds Stack: ..., value1, value2 -> ...
IF_ICMPLE	IF_ICMPLE - Branch if int comparison succeeds Stack: ..., value1, value2 -> ...
IF_ICMPLT	IF_ICMPLT - Branch if int comparison succeeds Stack: ..., value1, value2 -> ...
IF_ICMPNE	IF_ICMPNE - Branch if int comparison doesn't succeed Stack: ..., value1, value2 -> ...
IINC	IINC - Increment local variable by constant
ILOAD	ILOAD - Load int from local variable onto stack Stack: ...
IMPDEP1	IMPDEP1 - Implementation dependent
IMPDEP2	IMPDEP2 - Implementation dependent
IMUL	IMUL - Multiply ints Stack: ..., value1, value2 -> result
Instruction	Abstract super class for all Java byte codes.
InstructionConstants.Clinit
InstructionFactory	Instances of this class may be used, e.g., to generate typed versions of instructions.
InstructionHandle	Instances of this class give users a handle to the instructions contained in an InstructionList.
InstructionList	This class is a container for a list of Instruction objects.
InvokeInstruction	Super class for the INVOKExxx family of instructions.
INEG	INEG - Negate int Stack: ..., value -> ..., result
INSTANCEOF	INSTANCEOF - Determine if object is of given type Stack: ..., objectref -> ..., result
INVOKEINTERFACE	INVOKEINTERFACE - Invoke interface method Stack: ..., objectref, [arg1, [arg2 ...]] -> ...
INVOKESPECIAL	INVOKESPECIAL - Invoke instance method; special handling for superclass, private and instance initialization method invocations Stack: ..., objectref, [arg1, [arg2 ...]] -> ...
INVOKESTATIC	INVOKESTATIC - Invoke a class (static) method Stack: ..., [arg1, [arg2 ...]] -> ...
INVOKEVIRTUAL	INVOKEVIRTUAL - Invoke instance method; dispatch based on class Stack: ..., objectref, [arg1, [arg2 ...]] -> ...
IOR	IOR - Bitwise OR int Stack: ..., value1, value2 -> ..., result
IREM	IREM - Remainder of int Stack: ..., value1, value2 -> result
IRETURN	IRETURN - Return int from method Stack: ..., value -> <empty>
ISHL	ISHL - Arithmetic shift left int Stack: ..., value1, value2 -> ..., result
ISHR	ISHR - Arithmetic shift right int Stack: ..., value1, value2 -> ..., result
ISTORE	ISTORE - Store int from stack into local variable Stack: ..., value -> ...
ISUB	ISUB - Substract ints Stack: ..., value1, value2 -> result
IUSHR	IUSHR - Logical shift right int Stack: ..., value1, value2 -> ..., result
IXOR	IXOR - Bitwise XOR int Stack: ..., value1, value2 -> ..., result
JsrInstruction	Super class for JSR - Jump to subroutine
JSR	JSR - Jump to subroutine
JSR_W	JSR_W - Jump to subroutine
L2D	L2D - Convert long to double Stack: ..., value.word1, value.word2 -> ..., result.word1, result.word2
L2F	L2F - Convert long to float Stack: ..., value.word1, value.word2 -> ..., result
L2I	L2I - Convert long to int Stack: ..., value.word1, value.word2 -> ..., result
LADD	LADD - Add longs Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
LALOAD	LALOAD - Load long from array Stack: ..., arrayref, index -> ..., value1, value2
LAND	LAND - Bitwise AND longs Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
LASTORE	LASTORE - Store into long array Stack: ..., arrayref, index, value.word1, value.word2 -> ...
LCMP	LCMP - Compare longs: Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result <= -1, 0, 1>
LCONST	LCONST - Push 0 or 1, other values cause an exception Stack: ...
LDC	LDC - Push item from constant pool.
LDC2_W	LDC2_W - Push long or double from constant pool Stack: ...
LDC_W	LDC_W - Push item from constant pool (wide index) Stack: ...
LDIV	LDIV - Divide longs Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
LineNumberGen	This class represents a line number within a method, i.e., give an instruction a line number corresponding to the source code line.
LLOAD	LLOAD - Load long from local variable Stack ...
LMUL	LMUL - Multiply longs Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
LNEG	LNEG - Negate long Stack: ..., value.word1, value.word2 -> ..., result.word1, result.word2
LoadInstruction	Denotes an unparameterized instruction to load a value from a local variable, e.g.
LocalVariableGen	This class represents a local variable within a method.
LocalVariableInstruction	Abstract super class for instructions dealing with local variables.
LOOKUPSWITCH	LOOKUPSWITCH - Switch with unordered set of values
LOR	LOR - Bitwise OR long Stack: ..., value1, value2 -> ..., result
LREM	LREM - Remainder of long Stack: ..., value1, value2 -> result
LRETURN	LRETURN - Return long from method Stack: ..., value.word1, value.word2 -> <empty>
LSHL	LSHL - Arithmetic shift left long Stack: ..., value1.word1, value1.word2, value2 -> ..., result.word1, result.word2
LSHR	LSHR - Arithmetic shift right long Stack: ..., value1.word1, value1.word2, value2 -> ..., result.word1, result.word2
LSTORE	LSTORE - Store long into local variable Stack: ..., value.word1, value.word2 -> ...
LSUB	LSUB - Substract longs Stack: ..., value1.word1, value1.word2, value2.word1, value2.word2 -> ..., result.word1, result.word2
LUSHR	LUSHR - Logical shift right long Stack: ..., value1, value2 -> ..., result
LXOR	LXOR - Bitwise XOR long Stack: ..., value1, value2 -> ..., result
MethodGen	Template class for building up a method.
MONITORENTER	MONITORENTER - Enter monitor for object Stack: ..., objectref -> ...
MONITOREXIT	MONITOREXIT - Exit monitor for object Stack: ..., objectref -> ...
MULTIANEWARRAY	MULTIANEWARRAY - Create new mutidimensional array of references Stack: ..., count1, [count2, ...] -> ..., arrayref
NEW	NEW - Create new object Stack: ...
NEWARRAY	NEWARRAY - Create new array of basic type (int, short, ...) Stack: ..., count -> ..., arrayref type must be one of T_INT, T_SHORT, ...
NOP	NOP - Do nothing
ObjectType	Denotes reference such as java.lang.String.
POP	POP - Pop top operand stack word Stack: ..., word -> ...
POP2	POP2 - Pop two top operand stack words Stack: ..., word2, word1 -> ...
PUSH	Wrapper class for push operations, which are implemented either as BIPUSH, LDC or xCONST_n instructions.
PUTFIELD	PUTFIELD - Put field in object Stack: ..., objectref, value -> ...
PUTSTATIC	PUTSTATIC - Put static field in class Stack: ..., value -> ...
ReferenceType	Super class for object and array types.
ReturnaddressType	Returnaddress, the type JSR or JSR_W instructions push upon the stack.
ReturnInstruction	Super class for the xRETURN family of instructions.
RET	RET - Return from subroutine Stack: ..., -> ..., address
RETURN	RETURN - Return from void method Stack: ...
SALOAD	SALOAD - Load short from array Stack: ..., arrayref, index -> ..., value
SASTORE	SASTORE - Store into short array Stack: ..., arrayref, index, value -> ...
Select	Select - Abstract super class for LOOKUPSWITCH and TABLESWITCH instructions.
SIPUSH	SIPUSH - Push short Stack: ...
StackInstruction	Super class for stack operations like DUP and POP.
StoreInstruction	Denotes an unparameterized instruction to store a value into a local variable, e.g.
SWAP	SWAP - Swa top operand stack word Stack: ..., word2, word1 -> ..., word1, word2
SWITCH	SWITCH - Branch depending on int value, generates either LOOKUPSWITCH or TABLESWITCH instruction, depending on whether the match values (int[]) can be sorted with no gaps between the numbers.
TABLESWITCH	TABLESWITCH - Switch within given range of values, i.e., low..high
TargetLostException	Thrown by InstructionList.remove() when one or multiple disposed instruction are still being referenced by a InstructionTargeter object.
Type	Abstract super class for all possible java types, namely basic types such as int, object types like String and array types, e.g.