bcel API: Class FieldGen

org.apache.bcel.generic
Class FieldGen

java.lang.Object
  |
  +--org.apache.bcel.classfile.AccessFlags
        |
        +--org.apache.bcel.generic.FieldGenOrMethodGen
              |
              +--org.apache.bcel.generic.FieldGen

All Implemented Interfaces:

java.lang.Cloneable, NamedAndTyped

public class FieldGen

extends FieldGenOrMethodGen

Template class for building up a field. The only extraordinary thing one can do is to add a constant value attribute to a field (which must of course be compatible with to the declared type).

Version:

$Id: FieldGen.java,v 1.1.1.1 2001/10/29 20:00:12 jvanzyl Exp $

Author:

M. Dahm

See Also:

Field

Fields inherited from class org.apache.bcel.generic.FieldGenOrMethodGen

cp, name, type

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

access_flags

Constructor Summary

FieldGen(Field field, ConstantPoolGen cp)
Instantiate from existing field.

FieldGen(int access_flags, Type type, java.lang.String name, ConstantPoolGen cp)
Declare a field.

Method Summary

void	addObserver(FieldObserver o) Add observer for this object.
void	cancelInitValue() Remove any initial value.
FieldGen	copy(ConstantPoolGen cp)
Field	getField() Get field object after having set up all necessary values.
java.lang.String	getInitValue()
java.lang.String	getSignature()
void	removeObserver(FieldObserver o) Remove observer for this object.
void	setInitValue(boolean b)
void	setInitValue(byte b)
void	setInitValue(char c)
void	setInitValue(double d)
void	setInitValue(float f)
void	setInitValue(int i)
void	setInitValue(long l)
void	setInitValue(short s)
void	setInitValue(java.lang.String str) Set (optional) initial value of field, otherwise it will be set to null/0/false by the JVM automatically.
java.lang.String	toString() Return string representation close to declaration format, `public static final short MAX = 100', e.g..
void	update() Call notify() method on all observers.

Methods inherited from class org.apache.bcel.generic.FieldGenOrMethodGen

addAttribute, clone, getAttributes, getConstantPool, getName, getType, removeAttribute, removeAttributes, setConstantPool, setName, setType

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

getAccessFlags, isAbstract, isAbstract, isFinal, isFinal, isInterface, isInterface, isNative, isNative, isPrivate, isPrivate, isProtected, isProtected, isPublic, isPublic, isStatic, isStatic, isStrictfp, isStrictfp, isSynchronized, isSynchronized, isTransient, isTransient, isVolatile, isVolatile, setAccessFlags

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldGen

public FieldGen(int access_flags,
                Type type,
                java.lang.String name,
                ConstantPoolGen cp)

Declare a field. If it is static (isStatic() == true) and has a basic type like int or String it may have an initial value associated with it as defined by setInitValue().

Parameters:

access_flags - access qualifiers

type - field type

name - field name

cp - constant pool

FieldGen

public FieldGen(Field field,
                ConstantPoolGen cp)

Instantiate from existing field.

Parameters:

field - Field object

cp - constant pool (must contain the same entries as the field's constant pool)

Method Detail

setInitValue

public void setInitValue(java.lang.String str)

Set (optional) initial value of field, otherwise it will be set to null/0/false by the JVM automatically.

setInitValue

public void setInitValue(long l)

setInitValue

public void setInitValue(int i)

setInitValue

public void setInitValue(short s)

setInitValue

public void setInitValue(char c)

setInitValue

public void setInitValue(byte b)

setInitValue

public void setInitValue(boolean b)

setInitValue

public void setInitValue(float f)

setInitValue

public void setInitValue(double d)

cancelInitValue

public void cancelInitValue()

Remove any initial value.

getField

public Field getField()

Get field object after having set up all necessary values.

getSignature

public java.lang.String getSignature()

Overrides:

getSignature in class FieldGenOrMethodGen

Following copied from class: org.apache.bcel.generic.FieldGenOrMethodGen

Returns:

signature of method/field.

addObserver

public void addObserver(FieldObserver o)

Add observer for this object.

removeObserver

public void removeObserver(FieldObserver o)

Remove observer for this object.

update

public void update()

Call notify() method on all observers. This method is not called automatically whenever the state has changed, but has to be called by the user after he has finished editing the object.

getInitValue

public java.lang.String getInitValue()

toString

public final java.lang.String toString()

Return string representation close to declaration format, `public static final short MAX = 100', e.g..

Overrides:

toString in class java.lang.Object

Returns:

String representation of field

copy

public FieldGen copy(ConstantPoolGen cp)

Returns:

deep copy of this field