ConstantInstruction.IntrinsicConstantInstruction (Java SE 25 & JDK 25)
Description: declaration: module: java.base, package: java.lang.classfile.instruction, interface: ConstantInstruction, interface: IntrinsicConstantInstruction
Keywords: java.lang.classfile.instruction.ConstantInstruction.IntrinsicConstantInstruction interface

# Interface ConstantInstruction.IntrinsicConstantInstruction

All Superinterfaces:
  `ClassFileElement, CodeElement, ConstantInstruction, Instruction`

Enclosing interface:
  `ConstantInstruction`

public static sealed interface ConstantInstruction.IntrinsicConstantInstruction extends ConstantInstruction
Models an "intrinsic constant" instruction, which encodes the constant value in its opcode. Examples include `aconst_null` and `iconst_0`.

An intrinsic constant instruction is composite:

    IntrinsicConstantInstruction(Opcode opcode)

where:

`opcode`
  Must be of the constant kind and have a fixed size of 1.

Since:
  24
See Also:
  - `Opcode.Kind.CONSTANT`
  - `ConstantInstruction::ofIntrinsic`

- ## Nested Class Summary

  ### Nested classes/interfaces declared in interface ConstantInstruction

  `ConstantInstruction.ArgumentConstantInstruction, ConstantInstruction.IntrinsicConstantInstruction, ConstantInstruction.LoadConstantInstruction`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `default TypeKind`
  `typeKind()`
  Returns the computational type of the constant.

  ### Methods declared in interface ConstantInstruction

  `constantValue`

  ### Methods declared in interface Instruction

  `opcode, sizeInBytes`

- ## Method Details

  - ### typeKind

    default TypeKind typeKind()
    Description copied from interface: `ConstantInstruction`
    Returns the computational type of the constant. This is derived from the `constantValue`.
    Specified by:
      `typeKind` in interface `ConstantInstruction`
    Returns:
      the computational type of the constant