org.apache.bcel.classfile

Class ConstantString

java.lang.Object

org.apache.bcel.classfile.Constant

org.apache.bcel.classfile.ConstantString

All Implemented Interfaces:

java.lang.Cloneable, ConstantObject, Node

public final class ConstantString
extends Constant
implements ConstantObject

This class is derived from the abstract Constant and represents a reference to a String object.

Version:

$Id: ConstantString.java 1806200 2017-08-25 16:33:06Z ggregory $

See Also:

Constant

Field Summary

Fields

Modifier and Type	Field and Description
private int	string_index

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

tag

Constructor Summary

Constructors

Constructor and Description
ConstantString(ConstantString c) Initialize from another object.
ConstantString(java.io.DataInput file) Initialize instance from file data.
ConstantString(int string_index)

Method Summary

Modifier and Type	Method and 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.
void	dump(java.io.DataOutputStream file) Dump constant field reference to file stream in binary format.
java.lang.String	getBytes(ConstantPool cp)
java.lang.Object	getConstantValue(ConstantPool cp)
int	getStringIndex()
void	setStringIndex(int string_index)
java.lang.String	toString()

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

clone, copy, equals, getComparator, getTag, hashCode, readConstant, setComparator

Methods inherited from class java.lang.Object

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

Field Detail

string_index

private int string_index

Constructor Detail

ConstantString

public ConstantString(ConstantString c)

Initialize from another object.

ConstantString

ConstantString(java.io.DataInput file)
        throws java.io.IOException

Initialize instance from file data.

Parameters:

file - Input stream

Throws:

java.io.IOException

ConstantString

public ConstantString(int string_index)

Parameters:

string_index - Index of Constant_Utf8 in constant pool

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 Constant

Parameters:

v - Visitor object

dump

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

Dump constant field reference to file stream in binary format.

Specified by:

dump in class Constant

Parameters:

file - Output file stream

Throws:

java.io.IOException

getStringIndex

public final int getStringIndex()

Returns:

Index in constant pool of the string (ConstantUtf8).

setStringIndex

public final void setStringIndex(int string_index)

Parameters:

string_index - the index into the constant of the string value

toString

public final java.lang.String toString()

Overrides:

toString in class Constant

Returns:

String representation.

getConstantValue

public java.lang.Object getConstantValue(ConstantPool cp)

Specified by:

getConstantValue in interface ConstantObject

Returns:

String object

getBytes

public java.lang.String getBytes(ConstantPool cp)

Returns:

dereferenced string