ObjectUtils (Commons core 1.4 API)

java.lang.Object
- cn.ponfee.commons.util.ObjectUtils

public final class ObjectUtils
extends Object

Object utilities

作者:: Ponfee

构造器概要

构造器
构造器和说明

ObjectUtils()

构造器
构造器和说明
`ObjectUtils()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法和说明
`static <T> T`	`cast(Object value, Class<T> type)` Returns target type value from origin value cast
`static int`	`compare(Object a, Object b)` Compare two object numerically
`static <T> void`	`copy(T source, T target, String... fields)` Copies source fields value to target fields
`static <T> T`	`copyOf(T source, String... fields)` Returns a new instance of copy from spec fields
`static String`	`getStackTrace()`
`static String`	`getStackTrace(int deepPath)` 获取堆栈信息
`static String`	`getStackTrace(Thread thread)`
`static Object`	`getValue(Object obj, String name)` Gets the target's name value
`static boolean`	`isComplexType(Object value)` Returns `true` if this object value is complex json type(Object or Array)
`static boolean`	`isEmpty(Object o)` 判断对象是否为空
`static boolean`	`isNotBeanType(Class<?> type)` Returns the type is not a bean type
`static <T> T`	`newInstance(Class<T> type)` Returns a new instance of type
`static String`	`toString(Object obj)` Returns object toString
`static String`	`toString(Object obj, String defaultStr)`
`static <T> Class<T>`	`typeOf(T obj)`
`static byte[]`	`uuid()` uuid byte array
`static String`	`uuid22()` 22位uuid
`static String`	`uuid32()` uuid 32 string

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ObjectUtils
```
public ObjectUtils()
```
- 方法详细资料
  - toString
```
public static String toString(Object obj)
```
    Returns object toString
    
    参数:
    
    obj - the target object
    
    返回:
    
    the string of object
  - toString
```
public static String toString(Object obj,
                              String defaultStr)
```
  - compare
```
public static int compare(Object a,
                          Object b)
```
    Compare two object numerically
    
    参数:
    
    a - the object a
    
    b - the object b
    
    返回:
    
    0(a==b), 1(a>b), -1(a
  - typeOf
```
public static <T> Class<T> typeOf(T obj)
```
  - isComplexType
```
public static boolean isComplexType(Object value)
```
    Returns true if this object value is complex json type(Object or Array)
    
    参数:
    
    value - the value
    
    返回:
    
    true if the value is complex json type
  - isEmpty
```
public static boolean isEmpty(Object o)
```
    判断对象是否为空
    
    参数:
    
    o - the object
    
    返回:
    
    true is empty
  - getValue
```
public static Object getValue(Object obj,
                              String name)
```
    Gets the target's name value
    
    参数:
    
    obj - the object
    
    name - the field name
    
    返回:
    
    a value
  - cast
```
public static <T> T cast(Object value,
                         Class<T> type)
```
    Returns target type value from origin value cast
    
    参数:
    
    value - source object
    
    type - target object type
    
    返回:
    
    target type object
    
    另请参阅:
    
    com.alibaba.fastjson.util.TypeUtils#castToInt(Object)
  - uuid
```
public static byte[] uuid()
```
    uuid byte array
    
    返回:
  - uuid32
```
public static String uuid32()
```
    uuid 32 string
    
    返回:
  - uuid22
```
public static String uuid22()
```
    22位uuid
    
    返回:
  - getStackTrace
```
public static String getStackTrace(int deepPath)
```
    获取堆栈信息
    
    参数:
    
    deepPath - the deep path
    
    返回:
    
    stack trace
  - getStackTrace
```
public static String getStackTrace()
```
  - getStackTrace
```
public static String getStackTrace(Thread thread)
```
  - copy
```
public static <T> void copy(T source,
                            T target,
                            String... fields)
```
    Copies source fields value to target fields
    
    参数:
    
    source - the source
    
    target - the target
    
    fields - the fields of String array
  - copyOf
```
public static <T> T copyOf(T source,
                           String... fields)
```
    Returns a new instance of copy from spec fields
    
    参数:
    
    source - the source
    
    fields - the fields
    
    返回:
  - newInstance
```
public static <T> T newInstance(Class<T> type)
```
    Returns a new instance of type
    
    参数:
    
    type - the type class
    
    返回:
    
    a new instance
  - isNotBeanType
```
public static boolean isNotBeanType(Class<?> type)
```
    Returns the type is not a bean type
    
    参数:
    
    type - the type class
    
    返回:
    
    true assert is not a bean type

类 ObjectUtils

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ObjectUtils

方法详细资料

toString

toString

compare

typeOf

isComplexType

isEmpty

getValue

cast

uuid

uuid32

uuid22

getStackTrace

getStackTrace

getStackTrace

copy

copyOf

newInstance

isNotBeanType