Preview API

Provides classfile parsing, generation, and transformation library.

Models an annotation on a declaration.

Models the value of a key-value pair of an annotation.

Models an array-valued element

Models a constant-valued element

Models a class-valued element

Models a constant-valued element

Models a constant-valued element

Models a constant-valued element

Models a constant-valued element

Bidirectional mapper between the classfile representation of an attribute and how that attribute is modeled in the API.

A ClassFileElement describing an entity that has attributes, such as a class, field, method, code attribute, or record component.

Models an entry in the bootstrap method table.

A builder for classfiles.

Represents a context for parsing, transforming, and generating classfiles.

Option describing whether to process or discard unrecognized or problematic original attributes when a class, record component, field, method or code is transformed in its exploded form.

Option describing whether to preserve the original constant pool when transforming a classfile.

Option describing whether to filter unresolved labels.

Option describing whether to process or discard line numbers.

Option describing whether to automatically rewrite short jumps to long when necessary.

A builder for a classfile or portion of a classfile.

A transformation on streams of elements.

Models the classfile version information for a class.

Information about a resolved class.

Supports reading from a classfile.

A transformation on streams of ClassElement.

A builder for blocks of code.

A marker interface for elements that can appear when traversing a CodeModel or be presented to a CodeBuilder.

A transformation on streams of CodeElement.

Models a non-standard attribute of a classfile.

A marker interface for elements that can appear when traversing a FieldModel or be presented to a FieldBuilder.

A transformation on streams of FieldElement.

Models the interfaces of a class.

A builder for methods.

Models a method.

A transformation on streams of MethodElement.

Kinds of opcodes.

Models generic Java type signatures, as defined in 4.7.9.1.

Models the signature of a primitive type or void

Models the signature of a reference type, which may be a class, interface, type variable, or array type.

Models the type argument.

Models a type argument's wildcard indicator.

Models a signature for a type parameter of a generic class or method.

Models the superclass of a class.

Indicates that an annotation appears on the i'th type in an exception parameter declaration.

Indicates that an annotation appears on the type in a formal parameter declaration of a method, constructor, or lambda expression.

Indicates a range of code array offsets within which a local variable has a value, and the index into the local variable array of the current frame at which that local variable can be found.

Indicates that an annotation appears on a type in the extends or implements clause of a class or interface declaration.

The kind of target on which the annotation appears, as defined in 4.7.20.1.

Indicates that an annotation appears either on the i'th type in a cast expression, or on the i'th type argument in the explicit type argument list for any of the following: a new expression, an explicit constructor invocation statement, a method invocation expression, or a method reference expression.

Indicates that an annotation appears on the declaration of the i'th type parameter of a generic class, generic interface, generic method, or generic constructor.

Type path kind, as defined in 4.7.20.2

A classfile element that can encode itself as a stream of bytes in the encoding expected by the classfile format.

Models the AnnotationDefault attribute 4.7.22, which can appear on methods of annotation types, and records the default value 9.6.2 for the element corresponding to this method.

Models a single character range in the CharacterRangeTableAttribute.

Models the Code attribute 4.7.3, appears on non-native, non-abstract methods and contains the bytecode of the method body.

Models the ConstantValue attribute 4.7.2, which can appear on fields and indicates that the field's value is a constant.

Models the EnclosingMethod attribute 4.7.7, which can appear on classes, and indicates that the class is a local or anonymous class.

Models a single inner class in the InnerClassesAttribute.

Models a single line number in the LineNumberTableAttribute.

Models a single local variable in the LocalVariableTableAttribute.

Models a single local variable in the LocalVariableTypeTableAttribute.

Models a single method parameter in the MethodParametersAttribute.

Models the Module attribute 4.7.25, which can appear on classes that represent module descriptors.

Models a single "exports" declaration in the ModuleAttribute.

Models the ModuleHashes attribute, which can appear on classes that represent module descriptors.

Models a single "opens" declaration in the ModuleAttribute.

Models a single "provides" declaration in the ModuleAttribute.

Models the ModuleResolution attribute, which can appear on classes that represent module descriptors.

Models the NestHost attribute 4.7.28, which can appear on classes to indicate that this class is a member of a nest.

Models the PermittedSubclasses attribute 4.7.31, which can appear on classes to indicate which classes may extend this class.

Models a single record component in the java.lang.classfile.attribute.RecordAttribute.

Models the RuntimeInvisibleParameterAnnotations attribute 4.7.19, which can appear on methods.

Models the RuntimeVisibleAnnotations attribute 4.7.16, which can appear on classes, methods, and fields.

Models the RuntimeVisibleTypeAnnotations attribute 4.7.20, which can appear on classes, methods, fields, and code attributes.

Models the SourceDebugExtension attribute.

Models the SourceID attribute, which can appear on classes.

A stack value for an object type.

An uninitialized stack value.

Models the StackMapTable attribute 4.7.4, which can appear on a Code attribute.

Models an unknown attribute on a class, method, or field.

A printer of classfiles and its elements.

A tree node holding List of nested nodes.

Named, traversable, and printable node parent.

ClassRemapper is a ClassTransform, FieldTransform, MethodTransform and CodeTransform deeply re-mapping all class references in any form, according to given map or map function.

A code relabeler is a CodeTransform replacing all occurrences of java.lang.classfile.Label in the transformed code with new instances.

Provides interfaces describing classfile constant pool entries for the java.lang.classfile library.

Models a CONSTANT_Class_info constant in the constant pool of a classfile.

Provides read access to the constant pool and bootstrap method table of a classfile.

Thrown to indicate that requested entry cannot be obtained from the constant pool.

Models a CONSTANT_Double_info constant in the constant pool of a classfile.

Models a CONSTANT_Fieldref_info constant in the constant pool of a classfile.

Models a CONSTANT_Integer_info constant in the constant pool of a classfile.

Models a constant pool entry for a dynamic call site.

Models a CONSTANT_Long_info constant in the constant pool of a classfile.

Models a CONSTANT_MethodHandle_info constant in the constant pool of a classfile.

Models a CONSTANT_MethodType_info constant in the constant pool of a classfile.

Models a CONSTANT_NameAndType_info constant in the constant pool of a classfile.

Models an entry in the constant pool of a classfile.

Models a CONSTANT_UTF8_info constant in the constant pool of a classfile.

Models an array load instruction in the code array of a Code attribute.

Models a branching instruction (conditional or unconditional) in the code array of a Code attribute.

Models a constant-load instruction in the code array of a Code attribute, including "intrinsic constant" instructions (e.g., iconst_0), "argument constant" instructions (e.g., bipush), and "load constant" instructions (e.g., LDC).

Models an "intrinsic constant" instruction (e.g., iconst_0).

Models a primitive conversion instruction in the code array of a Code attribute, such as i2l.

Models JSR and JSR_W instructions discontinued from the code array of a Code attribute since class file version 51.0.

A pseudo-instruction modeling an entry in the exception table of a code attribute.

Models a local variable increment instruction in the code array of a Code attribute.

Models a method invocation instruction in the code array of a Code attribute, other than invokedynamic.

A pseudo-instruction which models a single entry in the LineNumberTableAttribute.

A pseudo-instruction which models a single entry in the LocalVariableTableAttribute.

Models a lookupswitch instruction in the code array of a Code attribute.

Models a multianewarray invocation instruction in the code array of a Code attribute.

Models a newarray invocation instruction in the code array of a Code attribute.

Models a nop invocation instruction in the code array of a Code attribute.

Models a return-from-method instruction in the code array of a Code attribute.

Models a local variable store instruction in the code array of a Code attribute.

Models a tableswitch instruction in the code array of a Code attribute.

Models an instanceof or checkcast instruction in the code array of a Code attribute.

Writes a string representation of the specified object to this console's output stream and then flushes the console.

Writes a prompt as if by calling print, then reads a single line of text from this console.

A skeletal visitor for annotation values with default behavior appropriate for a preview source version.

A skeletal visitor of types with default behavior appropriate for a preview source version.

A scanning visitor of program elements with default behavior appropriate for a preview source version.

A simple visitor of program elements with default behavior appropriate for a preview source version.

A visitor of types based on their kind with default behavior appropriate for a preview source version.

Returns true if this is an module import declaration.

A value that may be safely and efficiently shared to methods without using method parameters.

A mapping of scoped values, as keys, to values.

An intermediate operation that transforms a stream of input elements into a stream of output elements, optionally applying a final action when the end of the upstream is reached.

An Integrator receives elements and processes them, optionally using the supplied state, and optionally sends incremental results downstream.

Implementations of Gatherer that provide useful intermediate operations, such as windowing functions, folding functions, transforming elements concurrently, etc.

Thrown when a structure violation is detected.

A StructuredTaskScope that captures the exception of the first subtask to fail.

Represents a subtask forked with fork(Callable).