SystemPropertys (com.github.fangjinuo.langx:langx-java:4.2.2 4.2.2 API)

java.lang.Object
- com.jn.langx.util.SystemPropertys

```
public class SystemPropertys
extends Object
```
提供当前进程的系统属性值

作者:

jinuo.fang

字段概要

字段
限定符和类型字段和说明

static String NEWLINE

字段
限定符和类型	字段和说明
`static String`	`NEWLINE`

构造器概要

构造器
构造器和说明

SystemPropertys()

构造器
构造器和说明
`SystemPropertys()`

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 String`	`get(String key)`
`static String`	`get(String key, String def)` Returns the value of the Java system property with the specified `key`, while falling back to the specified default value if the property access fails.
`static PropertiesAccessor`	`getAccessor()`
`static String`	`getClassPathSeparator()`
`static String`	`getFileEncoding()`
`static List<String>`	`getJavaClassPath()`
`static String`	`getJavaClassPathString()`
`static String`	`getJavaClassVersion()`
`static String`	`getJavaEndorsedDirs()`
`static String`	`getJavaExtDirs()`
`static String`	`getJavaIOTmpDir()`
`static String`	`getJavaLibraryPath()` OS PATH environment variable
`static String`	`getJavaSpecificationVersion()`
`static String`	`getJavaVersion()`
`static String`	`getJREHome()` JRE home directory
`static String`	`getJREVersion()` JRE version
`static String`	`getLineSeparator()`
`static String`	`getOSArch()`
`static String`	`getOSName()`
`static String`	`getOSVersion()`
`static String`	`getUserHome()`
`static Locale`	`getUserLocal()`
`static String`	`getUserName()`
`static String`	`getUserWorkDir()`
`static void`	`setProperty(String key, String value)` 如果根据key获取到的值满足 predicate, 则将值设置为value
`static void`	`setPropertyIfAbsent(String key, String value)` 如果不存在指定的key,则设置为 value
`static void`	`setPropertyIfMatched(String key, Predicate<String> predicate, String value)` 如果根据key获取到的值满足 predicate, 则将值设置为value

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
  - NEWLINE
```
public static final String NEWLINE
```
- 构造器详细资料
  - SystemPropertys
```
public SystemPropertys()
```
- 方法详细资料
  - getClassPathSeparator
```
public static String getClassPathSeparator()
```
  - getJavaClassPathString
```
public static String getJavaClassPathString()
```
  - getJavaClassPath
```
public static List<String> getJavaClassPath()
```
  - getJavaEndorsedDirs
```
public static String getJavaEndorsedDirs()
```
    返回:
    
    返回系统属性：java.endorsed.dirs
  - getJavaExtDirs
```
public static String getJavaExtDirs()
```
    返回:
    
    返回系统属性：java.ext.dirs
  - getJavaIOTmpDir
```
public static String getJavaIOTmpDir()
```
    返回:
    
    返回系统属性：java.io.tmpdir
  - getJavaLibraryPath
```
public static String getJavaLibraryPath()
```
    OS PATH environment variable
    
    返回:
    
    返回系统属性：java.library.path
  - getJREHome
```
public static String getJREHome()
```
    JRE home directory
    
    返回:
    
    返回系统属性：java.home
  - getJREVersion
```
public static String getJREVersion()
```
    JRE version
    
    返回:
    
    返回系统属性：java.runtime.version
  - getJavaSpecificationVersion
```
public static String getJavaSpecificationVersion()
```
    返回:
    
    返回系统属性：java.specification.version
  - getJavaClassVersion
```
public static String getJavaClassVersion()
```
    返回:
    
    返回系统属性：java.class.version
  - getJavaVersion
```
public static String getJavaVersion()
```
    返回:
    
    返回系统属性：java.version
  - getOSArch
```
public static String getOSArch()
```
    返回:
    
    返回系统属性：os.arch
  - getOSName
```
public static String getOSName()
```
    返回:
    
    返回系统属性：os.name
  - getOSVersion
```
public static String getOSVersion()
```
    返回:
    
    返回系统属性：os.version
  - getUserHome
```
public static String getUserHome()
```
    返回:
    
    返回系统属性：user.home
  - getUserName
```
public static String getUserName()
```
    返回:
    
    返回系统属性：user.name
  - getUserLocal
```
public static Locale getUserLocal()
```
    返回:
    
    返回：Locale.getDefault()
  - getUserWorkDir
```
public static String getUserWorkDir()
```
    返回:
    
    返回系统属性：user.dir
  - getFileEncoding
```
public static String getFileEncoding()
```
    返回:
    
    返回系统属性：file.encoding
  - getLineSeparator
```
public static String getLineSeparator()
```
    返回:
    
    返回系统属性：line.separator
  - get
```
public static String get(String key)
```
  - get
```
public static String get(String key,
                         String def)
```
    Returns the value of the Java system property with the specified key, while falling back to the specified default value if the property access fails.
    
    返回:
    
    the property value. def if there's no such property or if an access to the specified property is not allowed.
  - getAccessor
```
public static PropertiesAccessor getAccessor()
```
  - setPropertyIfAbsent
```
public static void setPropertyIfAbsent(String key,
                                       String value)
```
    如果不存在指定的key,则设置为 value
    
    参数:
    
    key -
    
    value -
    
    从以下版本开始:
    
    2.10.2
  - setPropertyIfMatched
```
public static void setPropertyIfMatched(String key,
                                        Predicate<String> predicate,
                                        String value)
```
    如果根据key获取到的值满足 predicate, 则将值设置为value
    
    参数:
    
    key -
    
    value -
    
    从以下版本开始:
    
    2.10.2
  - setProperty
```
public static void setProperty(String key,
                               String value)
```
    如果根据key获取到的值满足 predicate, 则将值设置为value
    
    参数:
    
    key -
    
    value -
    
    从以下版本开始:
    
    3.5.6

类 SystemPropertys

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

NEWLINE

构造器详细资料

SystemPropertys

方法详细资料

getClassPathSeparator

getJavaClassPathString

getJavaClassPath

getJavaEndorsedDirs

getJavaExtDirs

getJavaIOTmpDir

getJavaLibraryPath

getJREHome

getJREVersion

getJavaSpecificationVersion

getJavaClassVersion

getJavaVersion

getOSArch

getOSName

getOSVersion

getUserHome

getUserName

getUserLocal

getUserWorkDir

getFileEncoding

getLineSeparator

get

get

getAccessor

setPropertyIfAbsent

setPropertyIfMatched

setProperty