Interface DiscontinuedInstruction.JsrInstruction

All Superinterfaces:

ClassFileElementPREVIEW, CodeElementPREVIEW, DiscontinuedInstructionPREVIEW, InstructionPREVIEW

Enclosing interface:

DiscontinuedInstructionPREVIEW

public static sealed interface DiscontinuedInstruction.JsrInstruction
extends DiscontinuedInstructionPREVIEW

JsrInstruction is a preview API of the Java platform.

Programs can only use JsrInstruction when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

Models JSR and JSR_W instructions discontinued from the code array of a Code attribute since class file version 51.0. Corresponding opcodes will have a kind of Opcode.Kind.DISCONTINUED_JSR^PREVIEW. Delivered as a CodeElement^PREVIEW when traversing the elements of a CodeModel^PREVIEW.

Since:

22

Nested Class Summary

Nested classes/interfaces declared in interface java.lang.classfile.instruction.DiscontinuedInstruction^PREVIEW

DiscontinuedInstruction.JsrInstructionPREVIEW, DiscontinuedInstruction.RetInstructionPREVIEW

Method Summary

Modifier and Type	Method	Description
static DiscontinuedInstruction.JsrInstructionPREVIEW	of(LabelPREVIEW target)	Returns a JSR instruction.
static DiscontinuedInstruction.JsrInstructionPREVIEW	of(OpcodePREVIEW op, LabelPREVIEW target)	Returns a JSR instruction.
LabelPREVIEW	target()	Returns the target of the JSR instruction.

Methods declared in interface java.lang.classfile.Instruction^PREVIEW

opcode, sizeInBytes

Method Details

target

LabelPREVIEW target()

Returns the target of the JSR instruction.

Returns:

the target of the JSR instruction

of

static DiscontinuedInstruction.JsrInstructionPREVIEW of(OpcodePREVIEW op,
 LabelPREVIEW target)

Returns a JSR instruction.

Parameters:

op - the opcode for the specific type of JSR instruction, which must be of kind Opcode.Kind.DISCONTINUED_JSR^PREVIEW

target - target label of the subroutine

Returns:

a JSR instruction

Throws:

IllegalArgumentException - if the opcode kind is not Opcode.Kind.DISCONTINUED_JSR^PREVIEW.

of

static DiscontinuedInstruction.JsrInstructionPREVIEW of(LabelPREVIEW target)

Returns a JSR instruction.

Parameters:

target - target label of the subroutine

Returns:

a JSR instruction