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bcel API: Class FieldGen
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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
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