org.apache.bcel.classfile
Class ConstantValue

java.lang.Object
  |
  +--org.apache.bcel.classfile.Attribute
        |
        +--org.apache.bcel.classfile.ConstantValue

All Implemented Interfaces:

java.lang.Cloneable, Node, java.io.Serializable

public final class ConstantValue

extends Attribute

This class is derived from Attribute and represents a constant value, i.e., a default value for initializing a class field. This class is instantiated by the Attribute.readAttribute() method.

Version:

$Id: ConstantValue.java,v 1.5 2003/02/13 11:18:23 enver Exp $

Author:

M. Dahm

See Also:

Attribute, Serialized Form

Field Summary

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

constant_pool, length, name_index, tag

Constructor Summary

ConstantValue(ConstantValue c)
Initialize from another object.

ConstantValue(int name_index, int length, int constantvalue_index, ConstantPool constant_pool)

Method Summary

void	accept(Visitor v) Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
Attribute	copy(ConstantPool constant_pool)
void	dump(java.io.DataOutputStream file) Dump constant value attribute to file stream on binary format.
int	getConstantValueIndex()
void	setConstantValueIndex(int constantvalue_index)
java.lang.String	toString()

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

addAttributeReader, clone, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ConstantValue

public ConstantValue(ConstantValue c)

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

ConstantValue

public ConstantValue(int name_index,
                     int length,
                     int constantvalue_index,
                     ConstantPool constant_pool)

Parameters:

name_index - Name index in constant pool

length - Content length in bytes

constantvalue_index - Index in constant pool

constant_pool - Array of constants

Method Detail

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.

Specified by:

accept in interface Node

Specified by:

accept in class Attribute

Parameters:

v - Visitor object

dump

public final void dump(java.io.DataOutputStream file)
                throws java.io.IOException

Dump constant value attribute to file stream on binary format.

Overrides:

dump in class Attribute

Parameters:

file - Output file stream

Throws:

java.io.IOException

getConstantValueIndex

public final int getConstantValueIndex()

Returns:

Index in constant pool of constant value.

setConstantValueIndex

public final void setConstantValueIndex(int constantvalue_index)

toString

public final java.lang.String toString()

Overrides:

toString in class Attribute

Returns:

String representation of constant value.

copy

public Attribute copy(ConstantPool constant_pool)

Specified by:

copy in class Attribute

Returns:

deep copy of this attribute