Class EasyLookup

java.lang.Object

com.saicone.rtag.util.EasyLookup

@Deprecated
@ScheduledForRemoval(inVersion="2.0.0")
public class EasyLookup
extends Object

Deprecated.

Class to handle reflection lookups in a easy way.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	EasyLookup.MethodPredicate	Deprecated. Boolean valued function to compare a method with return and parameter types.

Method Summary

Modifier and Type	Method	Description
static Class<?>	addClass(String name)	Deprecated. Same has Class.forName(String) but save the class into memory.
static Class<?>	addClass(String name, String... aliases)	Deprecated. Same has Class.forName(String) but save the class into memory.
static Class<?>	addClassId(String id, Class<?> clazz)	Deprecated. Save class into memory with provided ID to get from classById(String).
static Class<?>	addClassId(String id, String name, String... aliases)	Deprecated. Same has Class.forName(String) but save the class into memory with provided ID to get from classById(String).
static Class<?>	addNMSClass(String name)	Deprecated. Save the typically net.minecraft.server class into memory. For +1.17 servers compatibility the name must be the full class path after "net.minecraft."
static Class<?>	addNMSClass(String name, String... aliases)	Deprecated. Save the typically net.minecraft.server class into memory. For +1.17 servers compatibility the name must be the full class path after "net.minecraft."
static Class<?>	addNMSClassId(String id, String name, String... aliases)	Deprecated. Save the typically net.minecraft.server class into memory with specified ID. For +1.17 servers compatibility the name must be the full class path after "net.minecraft."
static Class<?>	addOBCClass(String name)	Deprecated. Save the typically org.bukkit.craftbukkit class into memory. Name must be the full path after craftbukkit package.
static Class<?>	addOBCClass(String name, String... aliases)	Deprecated. Save the typically org.bukkit.craftbukkit class into memory. Name must be the full path after craftbukkit package.
static Class<?>	addOBCClassId(String id, String name, String... aliases)	Deprecated. Save the typically org.bukkit.craftbukkit class into memory with specified ID. Name must be the full path after craftbukkit package.
static Class<?>	classById(String id)	Deprecated. Get previously saved class by it ID.
static Class<?>[]	classesOf(Object... classes)	Deprecated. Same has classOf(Object) but for multiple objects.
static Class<?>	classOf(Object object)	Deprecated. Get class represented by Object. If object is instance of Class will return itself, otherwise return classById(String).
static MethodHandle	constructor(Object clazz, Object... parameterTypes)	Deprecated. Easy way to invoke MethodHandles.Lookup.findConstructor(Class, MethodType) without creating a MethodType, it also provide void class at first argument has default. Required classes can be Strings to get by classById(String). See also unreflectConstructor(Object, Object...) for private constructors.
static Field	field(Object clazz, String field)	Deprecated. Get accessible field from provided class. Required classes can be Strings to get by classById(String).
static Constructor<?>	findConstructor(Class<?> from, Class<?>... parameterTypes)	Deprecated. Find constructor inside class using recursive searching and invoke MethodHandles.Lookup.unreflectConstructor(Constructor). Required classes can be Strings to get by classById(String).
static Field	findField(Class<?> from, boolean isStatic, String name, Class<?> type)	Deprecated. Find field inside class using recursive searching and return it
static Method	findMethod(Class<?> from, boolean isStatic, String name, Class<?> returnType, Class<?>... parameterTypes)	Deprecated. Find method inside class using recursirve searching and invoke MethodHandles.Lookup.unreflect(Method). Required classes can be Strings to get by classById(String).
static MethodHandle	getter(Object clazz, String name, Object returnType)	Deprecated. Easy way to invoke MethodHandles.Lookup.findGetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with public instance fields, see staticGetter(Object, String, Object) for static getter. Required classes can be Strings to get by classById(String). See also unreflectGetter(Object, String) for private getters.
static boolean	isAssignableFrom(Class<?>[] baseTypes, Class<?>[] checkedTypes)	Deprecated. Same has Class.isAssignableFrom(Class) but using class arrays.
static MethodHandle	method(Object clazz, String name, Object returnType, Object... parameterTypes)	Deprecated. Easy way to invoke MethodHandles.Lookup.findVirtual(Class, String, MethodType) without creating a MethodType, this method require to specify the return type class of reflected Method and its only compatible with instance public methods, see staticMethod(Object, String, Object, Object...) for static public methods. Required classes can be Strings to get by classById(String). See also unreflectMethod(Object, String, Object...) for private methods.
static MethodHandles.Lookup	privateLookup(Class<?> clazz)	Deprecated. Same has MethodHandles.privateLookupIn(Class, MethodHandles.Lookup) but save the result into memory.
static MethodHandle	setter(Object clazz, String name, Object returnType)	Deprecated. Easy way to invoke MethodHandles.Lookup.findSetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with public instance fields, see staticSetter(Object, String, Object) for static setter. Required classes can be Strings to get by classById(String). See also unreflectSetter(Object, String) for private setters.
static MethodHandle	staticGetter(Object clazz, String name, Object returnType)	Deprecated. Easy way to invoke MethodHandles.Lookup.findStaticGetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with instance fields Required classes can be Strings to get by classById(String). See also unreflectGetter(Object, String) for private getters.
static MethodHandle	staticMethod(Object clazz, String name, Object returnType, Object... parameterTypes)	Deprecated. Easy way to invoke MethodHandles.Lookup.findStatic(Class, String, MethodType) without creating a MethodType, this method require to specify the return type class of reflected Method and only compatible with static methods. Required classes can be Strings to get by classById(String). See also unreflectMethod(Object, String, Object...) for private methods.
static MethodHandle	staticSetter(Object clazz, String name, Object returnType)	Deprecated. Easy way to invoke MethodHandles.Lookup.findStaticSetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with instance fields Required classes can be Strings to get by classById(String). See also unreflectSetter(Object, String) for private setters.
static boolean	testClass(String name)	Deprecated. Test the availability of provided class name using Class.forName(String).
static MethodHandle	unreflectConstructor(Object clazz, Object... parameterTypes)	Deprecated. Easy way to invoke MethodHandles.Lookup.unreflectConstructor(Constructor), this method creates an accessible Constructor and unreflect it, useful for private constructors. Required classes can be Strings to get by classById(String).
static MethodHandle	unreflectConstructor(Constructor<?> constructor)	Deprecated. Same has MethodHandles.Lookup.unreflectConstructor(Constructor), but this method makes the constructor accessible if unreflection fails.
static MethodHandle	unreflectGetter(Object clazz, String name)	Deprecated. Easy way to invoke MethodHandles.Lookup.unreflectGetter(Field), this method creates an accessible Field and unreflect it, can be static or instance field. Required classes can be Strings to get by classById(String).
static MethodHandle	unreflectGetter(Field field)	Deprecated. Same has MethodHandles.Lookup.unreflectGetter(Field), but this method makes the field accessible if unreflection fails. Required classes can be Strings to get by classById(String).
static MethodHandle	unreflectMethod(Object clazz, String name, Object... parameterTypes)	Deprecated. Easy way to invoke MethodHandles.Lookup.unreflect(Method), this method creates and accessible Method and unreflect it, can be static or instance method. Required classes can be Strings to get by classById(String).
static MethodHandle	unreflectMethod(Method method)	Deprecated. Easy way to invoke MethodHandles.Lookup.unreflect(Method), but this method makes the method accessible if unreflection fails.
static MethodHandle	unreflectSetter(Object clazz, String name)	Deprecated. Easy way to invoke MethodHandles.Lookup.unreflectSetter(Field), this method creates a accessible Field and unreflect it, can be static or instance field. Required classes can be Strings to get by classById(String).
static MethodHandle	unreflectSetter(Field field)	Deprecated. Same has MethodHandles.Lookup.unreflectSetter(Field), but this method makes the field accessible if unreflection fails. Required classes can be Strings to get by classById(String).

Methods inherited from class Object

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

Method Details

testClass

public static boolean testClass(String name)

Deprecated.

Test the availability of provided class name using Class.forName(String).

Parameters:

name - Class name.

Returns:

true if the provided class exists.

classById

public static Class<?> classById(String id)

Deprecated.

Get previously saved class by it ID.

Parameters:

id - Class ID.

Returns:

A class represented by provided ID or null.

classOf

public static Class<?> classOf(Object object)

Deprecated.

Get class represented by Object.
If object is instance of Class will return itself, otherwise return classById(String).

Parameters:

object - Class or String.

Returns:

A class represented by provided object or null.

classesOf

public static Class<?>[] classesOf(Object... classes)

Deprecated.

Same has classOf(Object) but for multiple objects.

Parameters:

classes - Classes objects.

Returns:

A array of classes represented by objects.

addClass

public static Class<?> addClass(String name)
                         throws ClassNotFoundException

Deprecated.

Same has Class.forName(String) but save the class into memory.

Parameters:

name - Class name.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addClass

public static Class<?> addClass(String name,
 String... aliases)
                         throws ClassNotFoundException

Deprecated.

Same has Class.forName(String) but save the class into memory.

Parameters:

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addClassId

public static Class<?> addClassId(String id,
 String name,
 String... aliases)
                           throws ClassNotFoundException

Deprecated.

Same has Class.forName(String) but save the class into memory with provided ID to get from classById(String).

Parameters:

id - Class ID.

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addClassId

public static Class<?> addClassId(String id,
 Class<?> clazz)

Deprecated.

Save class into memory with provided ID to get from classById(String).

Parameters:

id - Class ID.

clazz - Class object.

Returns:

Added class.

addNMSClass

public static Class<?> addNMSClass(String name)
                            throws ClassNotFoundException

Deprecated.

Save the typically net.minecraft.server class into memory.
For +1.17 servers compatibility the name must be the full class path after "net.minecraft."

Parameters:

name - Class name.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addNMSClass

public static Class<?> addNMSClass(String name,
 String... aliases)
                            throws ClassNotFoundException

Deprecated.

Save the typically net.minecraft.server class into memory.
For +1.17 servers compatibility the name must be the full class path after "net.minecraft."

Parameters:

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addNMSClassId

public static Class<?> addNMSClassId(String id,
 String name,
 String... aliases)
                              throws ClassNotFoundException

Deprecated.

Save the typically net.minecraft.server class into memory with specified ID.
For +1.17 servers compatibility the name must be the full class path after "net.minecraft."

Parameters:

id - Class ID.

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addOBCClass

public static Class<?> addOBCClass(String name)
                            throws ClassNotFoundException

Deprecated.

Save the typically org.bukkit.craftbukkit class into memory.
Name must be the full path after craftbukkit package.

Parameters:

name - Class name.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addOBCClass

public static Class<?> addOBCClass(String name,
 String... aliases)
                            throws ClassNotFoundException

Deprecated.

Save the typically org.bukkit.craftbukkit class into memory.
Name must be the full path after craftbukkit package.

Parameters:

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

addOBCClassId

public static Class<?> addOBCClassId(String id,
 String name,
 String... aliases)
                              throws ClassNotFoundException

Deprecated.

Save the typically org.bukkit.craftbukkit class into memory with specified ID.
Name must be the full path after craftbukkit package.

Parameters:

id - Class ID.

name - Class name.

aliases - Alternative class names.

Returns:

Added class.

Throws:

ClassNotFoundException - if the class cannot be located.

privateLookup

public static MethodHandles.Lookup privateLookup(Class<?> clazz)

Deprecated.

Same has MethodHandles.privateLookupIn(Class, MethodHandles.Lookup) but save the result into memory.

Parameters:

clazz - Target class.

Returns:

Private lookup or null.

constructor

public static MethodHandle constructor(Object clazz,
 Object... parameterTypes)
                                throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findConstructor(Class, MethodType) without creating a MethodType, it also provide void class at first argument has default.
Required classes can be Strings to get by classById(String).
See also unreflectConstructor(Object, Object...) for private constructors.

Parameters:

clazz - Class to find constructor.

parameterTypes - Required classes in constructor.

Returns:

A MethodHandle representing class constructor.

Throws:

NoSuchMethodException - if the constructor does not exist.

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

unreflectConstructor

public static MethodHandle unreflectConstructor(Constructor<?> constructor)
                                         throws IllegalAccessException

Deprecated.

Same has MethodHandles.Lookup.unreflectConstructor(Constructor), but this method makes the constructor accessible if unreflection fails.

Parameters:

constructor - The reflected constructor.

Returns:

A MethodHandle representing constructor.

Throws:

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

unreflectConstructor

public static MethodHandle unreflectConstructor(Object clazz,
 Object... parameterTypes)
                                         throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.unreflectConstructor(Constructor), this method creates an accessible Constructor and unreflect it, useful for private constructors.
Required classes can be Strings to get by classById(String).

Parameters:

clazz - Class to find constructor.

parameterTypes - Required classes in constructor.

Returns:

A MethodHandle representing class constructor.

Throws:

NoSuchMethodException - if a matching method is not found.

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

findConstructor

public static Constructor<?> findConstructor(Class<?> from,
 Class<?>... parameterTypes)
                                      throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Find constructor inside class using recursive searching and invoke MethodHandles.Lookup.unreflectConstructor(Constructor).
Required classes can be Strings to get by classById(String).

Parameters:

from - Class to find constructor.

parameterTypes - Required classes in constructor.

Returns:

A constructor for provided class.

Throws:

NoSuchMethodException - if a matching method is not found.

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

method

public static MethodHandle method(Object clazz,
 String name,
 Object returnType,
 Object... parameterTypes)
                           throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findVirtual(Class, String, MethodType) without creating a MethodType, this method require to specify the return type class of reflected Method and its only compatible with instance public methods, see staticMethod(Object, String, Object, Object...) for static public methods.
Required classes can be Strings to get by classById(String).
See also unreflectMethod(Object, String, Object...) for private methods.

Parameters:

clazz - Class to find public method.

name - Method name.

returnType - Return type class for method.

parameterTypes - Required classes in method.

Returns:

A MethodHandle representing a instance method for provided class.

Throws:

NoSuchMethodException - if the method does not exist.

IllegalAccessException - if access checking fails, or if the method is static, or if the method's variable arity modifier bit is set and asVarargsCollector fails.

unreflectMethod

public static MethodHandle unreflectMethod(Method method)
                                    throws IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.unreflect(Method), but this method makes the method accessible if unreflection fails.

Parameters:

method - Method to unreflect.

Returns:

A MethodHandle representing a method.

Throws:

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

unreflectMethod

public static MethodHandle unreflectMethod(Object clazz,
 String name,
 Object... parameterTypes)
                                    throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.unreflect(Method), this method creates and accessible Method and unreflect it, can be static or instance method.
Required classes can be Strings to get by classById(String).

Parameters:

clazz - Class to find method.

name - Method name.

parameterTypes - Required classes in method.

Returns:

A MethodHandle representing a method for provided class.

Throws:

NoSuchMethodException - if a matching method is not found or if the name is "<init>"or "<clinit>".

IllegalAccessException - if access checking fails or if the method's variable arity modifier bit is set and asVarargsCollector fails.

staticMethod

public static MethodHandle staticMethod(Object clazz,
 String name,
 Object returnType,
 Object... parameterTypes)
                                 throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findStatic(Class, String, MethodType) without creating a MethodType, this method require to specify the return type class of reflected Method and only compatible with static methods.
Required classes can be Strings to get by classById(String).
See also unreflectMethod(Object, String, Object...) for private methods.

Parameters:

clazz - Class to find method.

name - Method name.

returnType - Return type class for method.

parameterTypes - Required classes in method.

Returns:

A MethodHandle representing a static method for provided class.

Throws:

NoSuchMethodException - if the method does not exist.

IllegalAccessException - if access checking fails, or if the method is not static, or if the method's variable arity modifier bit is set and asVarargsCollector fails.

findMethod

public static Method findMethod(Class<?> from,
 boolean isStatic,
 String name,
 Class<?> returnType,
 Class<?>... parameterTypes)
                         throws NoSuchMethodException,
IllegalAccessException

Deprecated.

Find method inside class using recursirve searching and invoke MethodHandles.Lookup.unreflect(Method).
Required classes can be Strings to get by classById(String).

Parameters:

from - Class to find method.

isStatic - True if method is static.

name - Method name.

returnType - Return type class for method.

parameterTypes - Required classes in method.

Returns:

A method from provided class.

Throws:

NoSuchMethodException - if the method does not exist.

IllegalAccessException - if access checking fails, or if the method is not static, or if the method's variable arity modifier bit is set and asVarargsCollector fails.

isAssignableFrom

public static boolean isAssignableFrom(Class<?>[] baseTypes,
 Class<?>[] checkedTypes)

Deprecated.

Same has Class.isAssignableFrom(Class) but using class arrays.

Parameters:

baseTypes - The Class array that check.

checkedTypes - The Class array to be checked.

Returns:

true if checkedTypes can be assigned to baseTypes in respecting order.

getter

public static MethodHandle getter(Object clazz,
 String name,
 Object returnType)
                           throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findGetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with public instance fields, see staticGetter(Object, String, Object) for static getter.
Required classes can be Strings to get by classById(String).
See also unreflectGetter(Object, String) for private getters.

Parameters:

clazz - Class to find getter.

name - Field name.

returnType - Return type class for provided field name.

Returns:

A MethodHandle representing a field getter for provided class.

Throws:

NoSuchFieldException - if the field does not exist.

IllegalAccessException - if access checking fails, or if the field is static.

unreflectGetter

public static MethodHandle unreflectGetter(Field field)
                                    throws IllegalAccessException

Deprecated.

Same has MethodHandles.Lookup.unreflectGetter(Field), but this method makes the field accessible if unreflection fails.
Required classes can be Strings to get by classById(String).

Parameters:

field - Field to unreflect.

Returns:

A MethodHandle representing a field getter for provided class.

Throws:

IllegalAccessException - if access checking fails.

unreflectGetter

public static MethodHandle unreflectGetter(Object clazz,
 String name)
                                    throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.unreflectGetter(Field), this method creates an accessible Field and unreflect it, can be static or instance field.
Required classes can be Strings to get by classById(String).

Parameters:

clazz - Class to find getter.

name - Field name.

Returns:

A MethodHandle representing a field getter for provided class.

Throws:

NoSuchFieldException - if a field with the specified name is not found.

IllegalAccessException - if access checking fails.

staticGetter

public static MethodHandle staticGetter(Object clazz,
 String name,
 Object returnType)
                                 throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findStaticGetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with instance fields
Required classes can be Strings to get by classById(String).
See also unreflectGetter(Object, String) for private getters.

Parameters:

clazz - Class to find getter.

name - Field name.

returnType - Return type class for provided field name.

Returns:

A MethodHandle representing a field getter for provided class.

Throws:

NoSuchFieldException - if the field does not exist.

IllegalAccessException - if access checking fails, or if the field is not static.

setter

public static MethodHandle setter(Object clazz,
 String name,
 Object returnType)
                           throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findSetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with public instance fields, see staticSetter(Object, String, Object) for static setter.
Required classes can be Strings to get by classById(String).
See also unreflectSetter(Object, String) for private setters.

Parameters:

clazz - Class to find setter.

name - Field name.

returnType - Return type class for provided field name.

Returns:

A MethodHandle representing a field setter for provided class.

Throws:

NoSuchFieldException - if the field does not exist.

IllegalAccessException - if access checking fails, or if the field is static.

unreflectSetter

public static MethodHandle unreflectSetter(Field field)
                                    throws IllegalAccessException

Deprecated.

Same has MethodHandles.Lookup.unreflectSetter(Field), but this method makes the field accessible if unreflection fails.
Required classes can be Strings to get by classById(String).

Parameters:

field - Field to unreflect.

Returns:

A MethodHandle representing a field setter for provided class.

Throws:

IllegalAccessException - if access checking fails.

unreflectSetter

public static MethodHandle unreflectSetter(Object clazz,
 String name)
                                    throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.unreflectSetter(Field), this method creates a accessible Field and unreflect it, can be static or instance field.
Required classes can be Strings to get by classById(String).

Parameters:

clazz - Class to find setter.

name - Field name.

Returns:

A MethodHandle representing a field setter for provided class.

Throws:

NoSuchFieldException - if a field with the specified name is not found.

IllegalAccessException - if access checking fails.

staticSetter

public static MethodHandle staticSetter(Object clazz,
 String name,
 Object returnType)
                                 throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Easy way to invoke MethodHandles.Lookup.findStaticSetter(Class, String, Class) without creating a MethodType, this method require to specify the return type class of Field and its only compatible with instance fields
Required classes can be Strings to get by classById(String).
See also unreflectSetter(Object, String) for private setters.

Parameters:

clazz - Class to find setter.

name - Field name.

returnType - Return type class for provided field name.

Returns:

A MethodHandle representing a field setter for provided class.

Throws:

NoSuchFieldException - if the field does not exist.

IllegalAccessException - if access checking fails, or if the field is not static.

findField

public static Field findField(Class<?> from,
 boolean isStatic,
 String name,
 Class<?> type)
                       throws NoSuchFieldException,
IllegalAccessException

Deprecated.

Find field inside class using recursive searching and return it

Parameters:

from - Class to find the field.

isStatic - True if field is static.

name - Field name.

type - Return type class for provided field name.

Returns:

A field from provided class.

Throws:

NoSuchFieldException - if the field does not exist.

IllegalAccessException - if access checking fails, or if the field is not static.

field

public static Field field(Object clazz,
 String field)
                   throws NoSuchFieldException

Deprecated.

Get accessible field from provided class.
Required classes can be Strings to get by classById(String).

Parameters:

clazz - Class to find setter.

field - Field name.

Returns:

A field from provided class with access permission.

Throws:

NoSuchFieldException - if the field does not exist.