Class ReflectionUtil

java.lang.Object

nl.pim16aap2.testing.reflection.ReflectionUtil

public final class ReflectionUtil
extends Object

Utility class for reflection.

Method Summary

Modifier and Type	Method	Description
static Field	getField(Class<?> clazz, String fieldName)	Gets a named field from a class.
static Field	getField(Object obj, String fieldName)	Gets a named field from an object.
static Method	getMethod(Class<?> clazz, String methodName)	Gets a named method from a class.
static Method	getMethod(Object obj, String methodName)	Gets a named method from an object.
static void	setField(Class<?> source, Object obj, String fieldName, @Nullable Object value)	Sets the value of a field in an object.
static void	setField(Object obj, String fieldName, @Nullable Object value)	Sets the value of a field in an object.

Methods inherited from class Object

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

Method Details

setField

public static void setField(Object obj,
 String fieldName,
 @Nullable Object value)

Sets the value of a field in an object.

Parameters:

obj - The object to set the field in.

fieldName - The name of the field to set.

value - The value to set the field to.

Throws:

RuntimeException - If the field could not be found or accessed.

setField

public static void setField(Class<?> source,
 Object obj,
 String fieldName,
 @Nullable Object value)

Sets the value of a field in an object.

Parameters:

source - The class to get the field from.

obj - The object to set the field in. This should be an instance of source or a subclass of it.

fieldName - The name of the field to set.

value - The value to set the field to.

Throws:

RuntimeException - If the field could not be found or accessed.

getField

public static Field getField(Class<?> clazz,
 String fieldName)

Gets a named field from a class.

Parameters:

clazz - The class to get the field from.

fieldName - The name of the field to get.

Returns:

The field. The field is set to accessible.

getField

public static Field getField(Object obj,
 String fieldName)

Gets a named field from an object.

Parameters:

obj - The object to get the field from.

fieldName - The name of the field to get.

Returns:

The field. The field is set to accessible.

getMethod

public static Method getMethod(Class<?> clazz,
 String methodName)

Gets a named method from a class.

Parameters:

clazz - The class to get the method from.

methodName - The name of the method to get.

Returns:

The method. The method is set to accessible.

getMethod

public static Method getMethod(Object obj,
 String methodName)

Gets a named method from an object.

Parameters:

obj - The object to get the method from.

methodName - The name of the method to get.

Returns:

The method. The method is set to accessible.