Module openj9.dtfj

Package com.ibm.dtfj.java

Interface JavaField

All Superinterfaces:

JavaMember

All Known Implementing Classes:

DTFJJavaField, DTFJJavaFieldInstance, DTFJJavaFieldStatic, JavaField, JavaInstanceField, JavaStaticField

public interface JavaField
extends JavaMember

Represents a Java field declaration.

This interface is modeled on java.lang.reflect.Field.

Method Summary

Modifier and Type	Method	Description
Object	get(JavaObject object)	Get the contents of an Object field.
boolean	getBoolean(JavaObject object)	Get the contents of a boolean field.
byte	getByte(JavaObject object)	Get the contents of a byte field.
char	getChar(JavaObject object)	Get the contents of a char field.
double	getDouble(JavaObject object)	Get the contents of a double field.
float	getFloat(JavaObject object)	Get the contents of a float field.
int	getInt(JavaObject object)	Get the contents of an int field.
long	getLong(JavaObject object)	Get the contents of a long field.
short	getShort(JavaObject object)	Get the contents of a short field.
String	getString(JavaObject object)	Get the contents of a string field.
default boolean	isNestedPacked()	Deprecated.
default boolean	isNestedPackedArray()	Deprecated.

Methods declared in interface com.ibm.dtfj.java.JavaMember

equals, getDeclaringClass, getModifiers, getName, getSignature, hashCode

Method Details

get

Object get(JavaObject object)
    throws CorruptDataException,
MemoryAccessException

Get the contents of an Object field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

a JavaObject instance for reference type fields, an instance of a subclass of Number, Boolean, or Character for primitive fields, or null for null reference fields This field must be declared in the object's class or in a superclass.

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field

See Also:

• JavaObject
• Byte
• Double
• Float
• Integer
• Long
• Short
• Character
• Boolean

getBoolean

boolean getBoolean(JavaObject object)
            throws CorruptDataException,
MemoryAccessException

Get the contents of a boolean field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to boolean

getByte

byte getByte(JavaObject object)
      throws CorruptDataException,
MemoryAccessException

Get the contents of a byte field.

Parameters:

object - to fetch the field from. Ignored for static fields

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to byte

getChar

char getChar(JavaObject object)
      throws CorruptDataException,
MemoryAccessException

Get the contents of a char field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to char

getDouble

double getDouble(JavaObject object)
          throws CorruptDataException,
MemoryAccessException

Get the contents of a double field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to double

getFloat

float getFloat(JavaObject object)
        throws CorruptDataException,
MemoryAccessException

Get the contents of a float field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to float

getInt

int getInt(JavaObject object)
    throws CorruptDataException,
MemoryAccessException

Get the contents of an int field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to int

getLong

long getLong(JavaObject object)
      throws CorruptDataException,
MemoryAccessException

Get the contents of a long field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to long

getShort

short getShort(JavaObject object)
        throws CorruptDataException,
MemoryAccessException

Get the contents of a short field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

NullPointerException - if the field is an instance field, and object is null

IllegalArgumentException - if the specified object is not appropriate for this field, or if the type of the field cannot be converted to short

getString

String getString(JavaObject object)
          throws CorruptDataException,
MemoryAccessException

Get the contents of a string field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

a String representing the value of the String field. Note that the instance returned can be null if the field was null in object.

Throws:

CorruptDataException

MemoryAccessException

IllegalArgumentException - if the specified field is not a String

NullPointerException - if the field is an instance field, and object is null

isNestedPacked

@Deprecated
default boolean isNestedPacked()
                        throws CorruptDataException,
MemoryAccessException

Deprecated.

Throws:

CorruptDataException

MemoryAccessException

isNestedPackedArray

@Deprecated
default boolean isNestedPackedArray()
                             throws CorruptDataException,
MemoryAccessException

Deprecated.

Throws:

CorruptDataException

MemoryAccessException