futils.utils
Class ConstantPoolInfo

java.lang.Object
  |
  +--futils.utils.ConstantPoolInfo

public class ConstantPoolInfo

extends java.lang.Object

This class defines an entry in the constant pool for a Java class. The class file is primarily composed of ConstantPool entries and manipulation is done by modifying those entries.

Version:

1.5, 16 Aug 1995

Author:

Chuck McManis

See Also:

ClassFile

Field Summary

static int	ASCIZ
static int	CLASS
static int	DOUBLE
static int	FIELDREF
static int	FLOAT
static int	INTEGER
static int	INTERFACE
static int	LONG
static int	METHODREF
static int	NAMEANDTYPE
static int	STRING
static int	UNICODE

Constructor Summary

ConstantPoolInfo()
Generic constructor

ConstantPoolInfo(double value)
Construct a new ConstantPoolInfo object that is of type DOUBLE

ConstantPoolInfo(float value)
Construct a new ConstantPoolInfo object that is of type FLOAT

ConstantPoolInfo(int value)
Construct a new ConstantPoolInfo object that is of type INTEGER

ConstantPoolInfo(long value)
Construct a new ConstantPoolInfo object that is of type LONG

ConstantPoolInfo(java.lang.String value)
Construct a new ConstantPoolInfo object that is of type ASCIZ

Method Summary

static short	indexOf(ConstantPoolInfo item, ConstantPoolInfo[] pool)
ConstantPoolInfo	inPool(ConstantPoolInfo[] pool) Returns the reference to the constant pool item that is already in pool, that matches this one.
boolean	isEqual(ConstantPoolInfo cp) Returns true if these constant pool items are identical.
int	isType() return the type of this constant pool item.
boolean	read(java.io.DataInputStream dis)
java.lang.String	toString()
void	write(java.io.DataOutputStream dos, ConstantPoolInfo[] pool)

Methods inherited from class java.lang.Object

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

Field Detail

ASCIZ

public static final int ASCIZ

CLASS

public static final int CLASS

DOUBLE

public static final int DOUBLE

FIELDREF

public static final int FIELDREF

FLOAT

public static final int FLOAT

INTEGER

public static final int INTEGER

INTERFACE

public static final int INTERFACE

LONG

public static final int LONG

METHODREF

public static final int METHODREF

NAMEANDTYPE

public static final int NAMEANDTYPE

STRING

public static final int STRING

UNICODE

public static final int UNICODE

Constructor Detail

ConstantPoolInfo

public ConstantPoolInfo()

Generic constructor

ConstantPoolInfo

public ConstantPoolInfo(double value)

Construct a new ConstantPoolInfo object that is of type DOUBLE

ConstantPoolInfo

public ConstantPoolInfo(float value)

Construct a new ConstantPoolInfo object that is of type FLOAT

ConstantPoolInfo

public ConstantPoolInfo(int value)

Construct a new ConstantPoolInfo object that is of type INTEGER

ConstantPoolInfo

public ConstantPoolInfo(long value)

Construct a new ConstantPoolInfo object that is of type LONG

ConstantPoolInfo

public ConstantPoolInfo(java.lang.String value)

Construct a new ConstantPoolInfo object that is of type ASCIZ

Method Detail

indexOf

public static short indexOf(ConstantPoolInfo item,
                            ConstantPoolInfo[] pool)
                     throws java.lang.Exception

inPool

public ConstantPoolInfo inPool(ConstantPoolInfo[] pool)

Returns the reference to the constant pool item that is already in pool, that matches this one.

isEqual

public boolean isEqual(ConstantPoolInfo cp)

Returns true if these constant pool items are identical.

isType

public int isType()

return the type of this constant pool item.

read

public boolean read(java.io.DataInputStream dis)
             throws java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

write

public void write(java.io.DataOutputStream dos,
                  ConstantPoolInfo[] pool)
           throws java.io.IOException,
                  java.lang.Exception