Interface LoadableConstantEntry

All Superinterfaces:

PoolEntry

All Known Subinterfaces:

ClassEntry, ConstantDynamicEntry, ConstantValueEntry, DoubleEntry, FloatEntry, IntegerEntry, LongEntry, MethodHandleEntry, MethodTypeEntry, StringEntry

public sealed interface LoadableConstantEntry
extends PoolEntry
permits ClassEntry, ConstantDynamicEntry, ConstantValueEntry, MethodHandleEntry, MethodTypeEntry

Marker interface for constant pool entries suitable for loading via the ldc instructions.

The use of a LoadableConstantEntry is modeled by a ConstantDesc. Conversions are through ConstantPoolBuilder.loadableConstantEntry(ConstantDesc) and constantValue().

See Java Virtual Machine Specification:

4.4 The Constant Pool

Sealed Class Hierarchy Graph:

Since:

24

See Also:

• CodeBuilder.ldc(LoadableConstantEntry)

Field Summary

Fields declared in interface java.lang.classfile.constantpool.PoolEntry

TAG_CLASS, TAG_DOUBLE, TAG_DYNAMIC, TAG_FIELDREF, TAG_FLOAT, TAG_INTEGER, TAG_INTERFACE_METHODREF, TAG_INVOKE_DYNAMIC, TAG_LONG, TAG_METHOD_HANDLE, TAG_METHOD_TYPE, TAG_METHODREF, TAG_MODULE, TAG_NAME_AND_TYPE, TAG_PACKAGE, TAG_STRING, TAG_UTF8

Method Summary

Modifier and Type	Method	Description
ConstantDesc	constantValue()	Returns a symbolic descriptor of this constant.
default TypeKind	typeKind()	Returns the data type of this constant.

Methods declared in interface java.lang.classfile.constantpool.PoolEntry

constantPool, index, tag, width

Method Details

constantValue

ConstantDesc constantValue()

Returns a symbolic descriptor of this constant.

Returns:

a symbolic descriptor of this constant

See Also:

• ConstantPoolBuilder.loadableConstantEntry(ConstantDesc)

typeKind

default TypeKind typeKind()

Returns the data type of this constant.

If the data type is of category 2, this constant must be loaded with ldc2_w; otherwise, the data type is of category 1, and this constant must be loaded with ldc or ldc_w.

Returns:

the data type of this constant