JavaSE应用程序类集部分详解6

Properties类

一、Properties类的定义

public class Properties extends Hashtable<Object,Object>

特点：擦除泛型

 

二、Properties类的操作方法

1、String getProperty(String key)

2、String getProperty(String key, String defaultValue)

3、void list(PrintStream out)

4、void list(PrintWriter out)

5、void load(InputStream inStream)

6、void load(Reader reader)

7、void loadFromXML(InputStream in)

8、Enumeration<?> propertyNames()

9、void save(OutputStream out, String comments)

10、Object setProperty(String key, String value)

11、void store(OutputStream out, String comments)

12、void store(Writer writer, String comments)

13、void storeToXML(OutputStream os, String comment)

14、void storeToXML(OutputStream os, String comment, String encoding)

15、Set<String> stringPropertyNames()

 

Collections类

一、Collections类的定义

public class Collections extends Object

从定义上此类和Collection接口无关

 

二、Collections类的特点

此类的所有方法都是静态方法