更好的类来更新属性文件？

它并没有比Apache的Commons
Configuration API
更好。这提供了从属性文件，XML，JNDI，JDBC数据源等进行配置的统一方法。

它对属性文件的处理非常好。它允许您从属性中生成一个PropertiesConfigurationLayout对象，该对象会保留有关属性文件的尽可能多的信息（空格，注释等）。将更改保存到属性文件时，将尽可能保留这些更改。

样例代码：

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStreamReader;import org.apache.commons.configuration.ConfigurationException;import org.apache.commons.configuration.PropertiesConfiguration;import org.apache.commons.configuration.PropertiesConfigurationLayout;public class PropertiesReader {    public static void main(String args[]) throws ConfigurationException, FileNotFoundException {        File file = new File(args[0] + ".properties");        PropertiesConfiguration config = new PropertiesConfiguration();        PropertiesConfigurationLayout layout = new PropertiesConfigurationLayout(config);        layout.load(new InputStreamReader(new FileInputStream(file)));        config.setProperty("test", "testValue");        layout.save(new FileWriter("path\to\properties\file.properties", false));    }}

也可以看看：

• http://mvnrepository.com/artifact/commons-configuration/commons-configuration/
• https://commons.apache.org/proper/commons-configuration/apidocs/org/apache/commons/configuration2/PropertiesConfigurationLayout.html