Java是否提供某种寄存器“cookies”来存储临时数据?

Java属性在内存中作为持久性格式(文件)被广泛使用。它们也被诸如IDE、Ant、Maven等工具广泛支持。

班级 Properties 它非常简单易用,有几种有用的方法(存储、加载和存储):

Properties preferences = new Properties();
preferences.put("color", "red");
preferences.put("style", "bold");
preferences.store(new FileOutputStream("prefs.properties"), "preferences");

// reload the properties
Properties preferences = new Properties();
preferences.load(new FileInputStream("prefs.properties"));

一个java.属性文件看起来像:

# You are reading the ".properties" entry.
! The exclamation mark can also mark text as comments.
website = http://en.wikipedia.org/
language = English
# The backslash below tells the application to continue reading
# the value onto the next line.
message = Welcome to \
          Wikipedia!
# Add spaces to the key
key\ with\ spaces = This is the value that could be looked up with the key "key with spaces".
# Unicode
tab : \u0009  

见 Java Preferences API .

它允许您存储首选项 每用户 和 每系统 . 它将把首选项存储在UNIX/Linux的隐藏文件中,并在基于Windows的系统中使用注册表(尽管这取决于实现)。

注意:我不确定它是否适用于小程序(由于安全限制)。