W3cubDocs
/OpenJDK 25Interface Instruction
- All Superinterfaces:
ClassFileElement, CodeElement
- All Known Subinterfaces:
ArrayLoadInstruction, ArrayStoreInstruction, BranchInstruction, ConstantInstruction, ConstantInstruction.ArgumentConstantInstruction, ConstantInstruction.IntrinsicConstantInstruction, ConstantInstruction.LoadConstantInstruction, ConvertInstruction, DiscontinuedInstruction, DiscontinuedInstruction.JsrInstruction, DiscontinuedInstruction.RetInstruction, FieldInstruction, IncrementInstruction, InvokeDynamicInstruction, InvokeInstruction, LoadInstruction, LookupSwitchInstruction, MonitorInstruction, NewMultiArrayInstruction, NewObjectInstruction, NewPrimitiveArrayInstruction, NewReferenceArrayInstruction, NopInstruction, OperatorInstruction, ReturnInstruction, StackInstruction, StoreInstruction, TableSwitchInstruction, ThrowInstruction, TypeCheckInstruction
public sealed interface Instruction extends CodeElement permits ArrayLoadInstruction, ArrayStoreInstruction, BranchInstruction, ConstantInstruction, ConvertInstruction, DiscontinuedInstruction, FieldInstruction, InvokeDynamicInstruction, InvokeInstruction, LoadInstruction, StoreInstruction, IncrementInstruction, LookupSwitchInstruction, MonitorInstruction, NewMultiArrayInstruction, NewObjectInstruction, NewPrimitiveArrayInstruction, NewReferenceArrayInstruction, NopInstruction, OperatorInstruction, ReturnInstruction, StackInstruction, TableSwitchInstruction, ThrowInstruction, TypeCheckInstruction (not exhaustive)
Models an executable instruction in the
code array of the Code attribute of a method. The order of instructions in a CodeModel is significant. The opcode identifies the operation of an instruction. Each kind of opcode has its own modeling interface for instructions.
- See Java Virtual Machine Specification:
- 6.5 Instructions
- Sealed Class Hierarchy Graph:
- Since:
- 24
- See Also:
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
Opcode |
opcode() |
Returns the operation of this instruction. |
int |
sizeInBytes() |
Returns the size in bytes of this instruction. |
Method Details
opcode
Opcode opcode()
Returns the operation of this instruction.
- Returns:
- the operation of this instruction
sizeInBytes
int sizeInBytes()
Returns the size in bytes of this instruction. This value is equal to
opcode().sizeIfFixed() if it is not -1.- Returns:
- the size in bytes of this instruction
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Documentation extracted from Debian's OpenJDK Development Kit package.
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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/classfile/Instruction.html