Interface 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:
Sealed class hierarchy graph for InstructionSealed class hierarchy graph for Instruction
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