Package org.apache.bcel.classfile

Class Method

java.lang.Object

org.apache.bcel.classfile.AccessFlags

org.apache.bcel.classfile.FieldOrMethod

org.apache.bcel.classfile.Method

All Implemented Interfaces:

Cloneable, Node

public final class Method
extends FieldOrMethod

This class represents the method info structure, i.e., the representation for a method in the class. See JVM specification for details. A method has access flags, a name, a signature and a number of attributes.

Field Summary

Fields inherited from class org.apache.bcel.classfile.FieldOrMethod

attributes, attributes_count, constant_pool, name_index, signature_index

Fields inherited from class org.apache.bcel.classfile.AccessFlags

access_flags

Constructor Summary

Constructors

Constructor	Description
Method()	Empty constructor, all attributes have to be defined via `setXXX' methods.
Method(int access_flags, int name_index, int signature_index, Attribute[] attributes, ConstantPool constant_pool)
Method(Method c)	Initialize from another object.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
Method	copy(ConstantPool _constant_pool)
boolean	equals(Object obj)	Return value as defined by given BCELComparator strategy.
Type[]	getArgumentTypes()
Code	getCode()
static BCELComparator	getComparator()
ExceptionTable	getExceptionTable()
LineNumberTable	getLineNumberTable()
LocalVariableTable	getLocalVariableTable()
ParameterAnnotationEntry[]	getParameterAnnotationEntries()
Type	getReturnType()
int	hashCode()	Return value as defined by given BCELComparator strategy.
static void	setComparator(BCELComparator comparator)
String	toString()	Return string representation close to declaration format, `public static void main(String[] args) throws IOException', e.g.

Methods inherited from class org.apache.bcel.classfile.FieldOrMethod

copy_, dump, getAnnotationEntries, getAttributes, getConstantPool, getGenericSignature, getName, getNameIndex, getSignature, getSignatureIndex, setAttributes, setConstantPool, setNameIndex, setSignatureIndex

Methods inherited from class org.apache.bcel.classfile.AccessFlags

getAccessFlags, getModifiers, isAbstract, isAbstract, isAnnotation, isAnnotation, isEnum, isEnum, isFinal, isFinal, isInterface, isInterface, isNative, isNative, isPrivate, isPrivate, isProtected, isProtected, isPublic, isPublic, isStatic, isStatic, isStrictfp, isStrictfp, isSynchronized, isSynchronized, isSynthetic, isSynthetic, isTransient, isTransient, isVarArgs, isVarArgs, isVolatile, isVolatile, setAccessFlags, setModifiers

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Method

public Method()

Empty constructor, all attributes have to be defined via `setXXX' methods. Use at your own risk.

Method

public Method(Method c)

Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy.

Method

public Method(int access_flags,
 int name_index,
 int signature_index,
 Attribute[] attributes,
 ConstantPool constant_pool)

Parameters:

access_flags - Access rights of method

name_index - Points to field name in constant pool

signature_index - Points to encoded signature

attributes - Collection of attributes

constant_pool - Array of constants

Method Details

accept

public void accept(Visitor v)

Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Parameters:

v - Visitor object

getCode

public Code getCode()

Returns:

Code attribute of method, if any

getExceptionTable

public ExceptionTable getExceptionTable()

Returns:

ExceptionTable attribute of method, if any, i.e., list all exceptions the method may throw not exception handlers!

getLocalVariableTable

public LocalVariableTable getLocalVariableTable()

Returns:

LocalVariableTable of code attribute if any, i.e. the call is forwarded to the Code atribute.

getLineNumberTable

public LineNumberTable getLineNumberTable()

Returns:

LineNumberTable of code attribute if any, i.e. the call is forwarded to the Code atribute.

toString

public String toString()

Return string representation close to declaration format, `public static void main(String[] args) throws IOException', e.g.

Overrides:

toString in class Object

Returns:

String representation of the method.

copy

public Method copy(ConstantPool _constant_pool)

Returns:

deep copy of this method

getReturnType

public Type getReturnType()

Returns:

return type of method

getArgumentTypes

public Type[] getArgumentTypes()

Returns:

array of method argument types

getComparator

public static BCELComparator getComparator()

Returns:

Comparison strategy object

setComparator

public static void setComparator(BCELComparator comparator)

Parameters:

comparator - Comparison strategy object

equals

public boolean equals(Object obj)

Return value as defined by given BCELComparator strategy. By default two method objects are said to be equal when their names and signatures are equal.

Overrides:

equals in class Object

See Also:

• Object.equals(java.lang.Object)

hashCode

public int hashCode()

Return value as defined by given BCELComparator strategy. By default return the hashcode of the method's name XOR signature.

Overrides:

hashCode in class Object

See Also:

• Object.hashCode()

getParameterAnnotationEntries

public ParameterAnnotationEntry[] getParameterAnnotationEntries()

Returns:

Annotations on the parameters of a method

Since:

6.0