configuration.java

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package test;

import java.util.Properties;
import java.io.InputStream;
import java.io.IOException;

public class Configuration {
    private Properties properties;
    private final static Configuration cfg = new Configuration();//单子模型

    private Configuration() {
        properties = new Properties();
        InputStream is = null;
        try {
            is = getClass().getResourceAsStream("/ApplicationResources.properties");
            properties.load(is);
        } catch (Exception exception) {
          System.out.println("Can't read the properties file. ");
        } finally {
            try {
                if (is != null)
                    is.close();
            } catch (IOException exception) {
                // ignored
            }
        }
    }

    public static Configuration getInstance() {
      return cfg;
    }

    public String getValue(String key) {
        return properties.getProperty(key);
    }
}