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/OpenJDK 25

Interface StringEntry

All Superinterfaces:
ConstantValueEntry, LoadableConstantEntry, PoolEntry
public sealed interface StringEntry extends ConstantValueEntry
Models a CONSTANT_String_info structure, or a string constant, in the constant pool of a class file.

The use of a StringEntry is represented by a String. Conversions are through ConstantPoolBuilder.stringEntry(String) and stringValue().

A string entry is composite: 

StringEntry(Utf8Entry utf8)
See Java Virtual Machine Specification:
4.4.3 The CONSTANT_String_info Structure
Since:
24

Field Summary

Fields declared in interface 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
boolean equalsString(String value)
Returns whether this entry describes the same string as the provided string.
String stringValue()
Returns the string value for this entry.
Utf8Entry utf8()
Returns the UTF constant pool entry describing the string contents.

Methods declared in interface ConstantValueEntry

constantValue

Methods declared in interface LoadableConstantEntry

typeKind

Methods declared in interface PoolEntry

constantPool, index, tag, width

Method Details

utf8

Utf8Entry utf8()
Returns the UTF constant pool entry describing the string contents.
Returns:
the UTF constant pool entry describing the string contents
See Also:

stringValue

String stringValue()
Returns the string value for this entry.
API Note:
A Utf8Entry can be used directly as a CharSequence if String functionalities are not strictly desired. If only string equivalence is desired, equalsString should be used. Reduction of string processing can significantly improve class file reading performance.
Returns:
the string value for this entry
See Also:

equalsString

boolean equalsString(String value)
Returns whether this entry describes the same string as the provided string.
Parameters:
value - the string to compare to
Returns:
whether this entry describes the same string as the provided string
Since:
25

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/classfile/constantpool/StringEntry.html