com.vladium.util

类 Property

java.lang.Object

com.vladium.util.Property

public abstract class Property
extends Object

作者:

Vlad Roubtsov, (C) 2003

构造器概要

构造器

构造器和说明
Property()

方法概要

限定符和类型	方法和说明
static Properties	combine(Properties overrides, Properties base) NOTE: this does not guarantee that the result will be mutatable independently from 'overrides' or 'base', so this method should be used for read-only property only
static Properties	getAppProperties(String namespace, ClassLoader loader) Creates a set of properties for an application with a given namespace.
static Properties	getLazyPropertiesFromFile(File file) Returns a lazy property implementation that will read 'load' as a .properties file on first use.
static Properties	getProperties(String name) does not throw
static Properties	getProperties(String name, ClassLoader loader) does not throw
static Properties	getPropertiesFromFile(File file) Loads 'file' as a .properties file.
static String	getSystemFingerprint()
static Properties	getSystemProperties(String systemPrefix)
static String	getSystemProperty(String key)
static String	getSystemProperty(String key, String def)
static Properties	getSystemPropertyRedirects(Map systemRedirects)
static boolean	toBoolean(String value)

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

Property

public Property()

方法详细资料

toBoolean

public static boolean toBoolean(String value)

combine

public static Properties combine(Properties overrides,
                                 Properties base)

NOTE: this does not guarantee that the result will be mutatable independently from 'overrides' or 'base', so this method should be used for read-only property only

参数:

overrides - [null is equivalent to empty]

base - [null is equivalent to empty]

返回:

[never null, could be empty]

getAppProperties

public static Properties getAppProperties(String namespace,
                                          ClassLoader loader)

Creates a set of properties for an application with a given namespace. This method is not property aliasing-aware.

参数:

namespace - application namespace [may not be null]

loader - classloader to use for any classloader resource lookups [null is equivalent to the applicaton classloader]

返回:

application properties [never null, a new instance is created on each invocation]

getSystemProperties

public static Properties getSystemProperties(String systemPrefix)

getSystemPropertyRedirects

public static Properties getSystemPropertyRedirects(Map systemRedirects)

getSystemFingerprint

public static String getSystemFingerprint()

getSystemProperty

public static String getSystemProperty(String key)

getSystemProperty

public static String getSystemProperty(String key,
                                       String def)

getProperties

public static Properties getProperties(String name)

does not throw

参数:

name -

返回:

getProperties

public static Properties getProperties(String name,
                                       ClassLoader loader)

does not throw

参数:

name -

loader -

返回:

getPropertiesFromFile

public static Properties getPropertiesFromFile(File file)
                                        throws IOException

Loads 'file' as a .properties file.

参数:

file - [may not be null]

返回:

read properties [never null]

抛出:

IOException - on any file I/O errors

getLazyPropertiesFromFile

public static Properties getLazyPropertiesFromFile(File file)

Returns a lazy property implementation that will read 'load' as a .properties file on first use. If there are any file I/O errors when reading the file, they will be thrown as runtime exceptions (also on first use).

参数:

file - [can be null, which results in an empty property set returned]

返回:

[never null]