java.lang.classfile.constantpool

public sealed Interface LoadableConstantEntry

Known Direct Subinterfaces: java.lang.classfile.constantpool.MethodHandleEntry, java.lang.classfile.constantpool.MethodTypeEntry, java.lang.classfile.constantpool.ClassEntry, java.lang.classfile.constantpool.ConstantDynamicEntry, java.lang.classfile.constantpool.ConstantValueEntry
Imports: java.lang.classfile.CodeBuilder, .Opcode, .TypeKind, java.lang.classfile.instruction.ConstantInstruction, java.lang.constant.ConstantDesc

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().

Since: 24
Java Virtual Machine Specification: 4.4 The Constant Pool
See Also: CodeBuilder#ldc(LoadableConstantEntry)

Field Summary

Inherited from 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 and Description
public ConstantDesc	Returns: a symbolic descriptor of this constant constantValue() Returns a symbolic descriptor of this constant.
public default TypeKind	Returns: the data type of this constant typeKind() Returns the data type of this constant.

Inherited from java.lang.classfile.constantpool.PoolEntry:: constantPool index tag width

Method Detail

constantValue back to summary

constantValue	back to summary
public ConstantDesc constantValue() Returns a symbolic descriptor of this constant. Returns:ConstantDesc a symbolic descriptor of this constant See Also `ConstantPoolBuilder#loadableConstantEntry(ConstantDesc)`

public ConstantDesc constantValue()

Returns a symbolic descriptor of this constant.

Returns:ConstantDesc: a symbolic descriptor of this constant
See Also: ConstantPoolBuilder#loadableConstantEntry(ConstantDesc)

typeKind back to summary

typeKind	back to summary
public 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:TypeKind the data type of this constant

public 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:TypeKind: the data type of this constant