cn.ponfee.disjob.common.util

类 ClassUtils

java.lang.Object

cn.ponfee.disjob.common.util.ClassUtils

public final class ClassUtils
extends Object

Class utility

作者:

Ponfee

字段概要

字段

限定符和类型	字段和说明
static Pattern	QUALIFIED_CLASS_NAME_PATTERN

构造器概要

构造器

构造器和说明
ClassUtils()

方法概要

限定符和类型	方法和说明
static Set<String>	fieldDiff(Class<?> a, Class<?> b)
static <T> Class<T>	getClass(String text) Returns class object for text, can be class qualifier name or source code
static String	getClassFilePath(Class<?> clazz) 获取类文件的路径（文件）
static String	getClasspath() 获取当前的类路径（目录）
static String	getClasspath(Class<?> clazz) 获取指定类的类路径（目录）
static <T> Constructor<T>	getConstructor(Class<T> type, Class<?>... parameterTypes)
static Field	getField(Class<?> clazz, String fieldName) Returns the member field(include super class)
static Method	getMethod(Object caller, String methodName, Class<?>... parameterTypes)
static String	getObjectClassName(Object obj)
static String	getPackagePath(Class<?> clazz) 包名称转目录路径名 ClassUtils.getPackagePath(ClassUtils.class) -> code/ponfee/commons/reflect
static String	getPackagePath(String packageName) 包名称转目录路径名 getPackagePath("cn.ponfee.commons.reflect") -> cn/ponfee/commons/reflect
static Field	getStaticField(Class<?> clazz, String staticFieldName) Returns the static field
static Tuple2<Class<?>,Field>	getStaticFieldInClassChain(Class<?> clazz, String staticFieldName) Returns the static field, find in class pointer chain
static <T> T	invoke(Object caller, Method method)
static <T> T	invoke(Object caller, Method method, Object[] args)
static <T> T	invoke(Object caller, String methodName)
static <T> T	invoke(Object caller, String methodName, Class<?>[] parameterTypes, Object[] args)
static <T> T	invoke(Object caller, String methodName, Object[] args)
static List<Field>	listFields(Class<?> clazz) Returns member field list include super class(exclude transient field)
static <T> T	newInstance(Class<T> type)
static <T> T	newInstance(Class<T> type, Class<?>[] parameterTypes, Object[] args)
static <T> T	newInstance(Class<T> type, Object[] args) 泛型参数的构造函数需要使用 {newInstance(Class, Class[], Object[])} ClassUtils.newInstance(Tuple3.class, new Object[]{1, 2, 3}) ClassUtils.newInstance(Tuple2.class, new Object[]{new String[]{"a", "b"}, new Integer[]{1, 2}})
static <T> T	newInstance(Constructor<T> constructor)
static <T> T	newInstance(Constructor<T> constructor, Object[] args)
static Tuple2<Class<?>,Predicates>	obtainClass(Object obj)

从类继承的方法 java.lang.Object

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

字段详细资料

QUALIFIED_CLASS_NAME_PATTERN

public static final Pattern QUALIFIED_CLASS_NAME_PATTERN

构造器详细资料

ClassUtils

public ClassUtils()

方法详细资料

getClass

public static <T> Class<T> getClass(String text)

Returns class object for text, can be class qualifier name or source code

参数:

text - the class qualifier name or source code

返回:

class object

getField

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

Returns the member field(include super class)

参数:

clazz - the type

fieldName - the field name

返回:

member field object

fieldDiff

public static Set<String> fieldDiff(Class<?> a,
                                    Class<?> b)

listFields

public static List<Field> listFields(Class<?> clazz)

Returns member field list include super class(exclude transient field)

参数:

clazz - the class

返回:

a list filled fields

getStaticFieldInClassChain

public static Tuple2<Class<?>,Field> getStaticFieldInClassChain(Class<?> clazz,
                                                                String staticFieldName)

Returns the static field, find in class pointer chain

参数:

clazz - the clazz

staticFieldName - the static field name

返回:

static field object

getStaticField

public static Field getStaticField(Class<?> clazz,
                                   String staticFieldName)

Returns the static field

参数:

clazz - the clazz

staticFieldName - the static field name

返回:

static field object

getObjectClassName

public static String getObjectClassName(Object obj)

getPackagePath

public static String getPackagePath(String packageName)

包名称转目录路径名

getPackagePath("cn.ponfee.commons.reflect") -> cn/ponfee/commons/reflect

参数:

packageName - the package name

返回:

package name

另请参阅:

ClassUtils.convertClassNameToResourcePath(java.lang.String)

getPackagePath

public static String getPackagePath(Class<?> clazz)

包名称转目录路径名

ClassUtils.getPackagePath(ClassUtils.class) -> code/ponfee/commons/reflect

参数:

clazz - the class

返回:

spec class file path

getConstructor

public static <T> Constructor<T> getConstructor(Class<T> type,
                                                Class<?>... parameterTypes)

newInstance

public static <T> T newInstance(Constructor<T> constructor)

newInstance

public static <T> T newInstance(Constructor<T> constructor,
                                Object[] args)

newInstance

public static <T> T newInstance(Class<T> type,
                                Class<?>[] parameterTypes,
                                Object[] args)

newInstance

public static <T> T newInstance(Class<T> type)

newInstance

public static <T> T newInstance(Class<T> type,
                                Object[] args)

泛型参数的构造函数需要使用 {newInstance(Class, Class[], Object[])}

ClassUtils.newInstance(Tuple3.class, new Object[]{1, 2, 3})

ClassUtils.newInstance(Tuple2.class, new Object[]{new String[]{"a", "b"}, new Integer[]{1, 2}})

类型参数:

T - class type

参数:

type - the class

args - the args

返回:

instance

getMethod

public static Method getMethod(Object caller,
                               String methodName,
                               Class<?>... parameterTypes)

invoke

public static <T> T invoke(Object caller,
                           Method method)

invoke

public static <T> T invoke(Object caller,
                           Method method,
                           Object[] args)

invoke

public static <T> T invoke(Object caller,
                           String methodName)

invoke

public static <T> T invoke(Object caller,
                           String methodName,
                           Class<?>[] parameterTypes,
                           Object[] args)

invoke

public static <T> T invoke(Object caller,
                           String methodName,
                           Object[] args)

obtainClass

public static Tuple2<Class<?>,Predicates> obtainClass(Object obj)

getClassFilePath

public static String getClassFilePath(Class<?> clazz)

获取类文件的路径（文件）

参数:

clazz - the class

返回:

spec class file path

getClasspath

public static String getClasspath(Class<?> clazz)

获取指定类的类路径（目录）

参数:

clazz - the class

返回:

spec classpath

getClasspath

public static String getClasspath()

获取当前的类路径（目录）

返回:

current main classpath