Class FieldInfo (1.42.3)

public class FieldInfo

Parses field information to determine data key name/value pair associated with the field.

Implementation is thread-safe.

Inheritance

Object > FieldInfo

Static Methods

getFieldValue(Field field, Object obj)

public static Object getFieldValue(Field field, Object obj)

Returns the value of the given field in the given object using reflection.

Parameters
NameDescription
fieldField
objObject
Returns
TypeDescription
Object

of(Enum<?> enumValue)

public static FieldInfo of(Enum<?> enumValue)

Returns the field information for the given enum value.

Parameter
NameDescription
enumValueEnum<?>

enum value

Returns
TypeDescription
FieldInfo

field information

of(Field field)

public static FieldInfo of(Field field)

Returns the field information for the given field.

Parameter
NameDescription
fieldField

field or null for null result

Returns
TypeDescription
FieldInfo

field information or null if the field has no #name or for null input

setFieldValue(Field field, Object obj, Object value)

public static void setFieldValue(Field field, Object obj, Object value)

Sets the given field in the given object to the given value using reflection.

If the field is final, it checks that the value being set is identical to the existing value.

Parameters
NameDescription
fieldField
objObject
valueObject

Methods

<T>enumValue()

public T <T>enumValue()
Returns
TypeDescription
T

getClassInfo()

public ClassInfo getClassInfo()

Returns the class information of the field's declaring class.

Returns
TypeDescription
ClassInfo

getField()

public Field getField()

Returns the field.

Returns
TypeDescription
Field

getGenericType()

public Type getGenericType()

Returns the field's generic type, which is a class, parameterized type, generic array type, or type variable, but not a wildcard type.

Returns
TypeDescription
Type

getName()

public String getName()

Returns the data key name associated with the field for a non-enum-constant with a Key annotation, or data key value associated with the enum constant with a Value annotation or null for an enum constant with a NullValue annotation.

This string is interned.

Returns
TypeDescription
String

getType()

public Class<?> getType()

Returns the field's type.

Returns
TypeDescription
Class<?>

getValue(Object obj)

public Object getValue(Object obj)

Returns the value of the field in the given object instance using reflection.

Parameter
NameDescription
objObject
Returns
TypeDescription
Object

isFinal()

public boolean isFinal()

Returns whether the field is final.

Returns
TypeDescription
boolean

isPrimitive()

public boolean isPrimitive()

Returns whether the field is primitive as defined by Data#isPrimitive(Type).

Returns
TypeDescription
boolean

setValue(Object obj, Object value)

public void setValue(Object obj, Object value)

Sets this field in the given object to the given value using reflection.

If the field is final, it checks that the value being set is identical to the existing value.

Parameters
NameDescription
objObject
valueObject