Java读取属性文件简洁工具类

属性文件名称UPay.properties,取键位UPay.AGENCY_RECHARGE_RET_URL的值：

package com.onlinecredit.util;import java.io.IOException;import java.io.InputStream;import java.util.Properties;public final class Property {private static Properties prop;static{prop = new Properties();        InputStream in = Object.class.getResourceAsStream("/UPay.properties");        try {            prop.load(in);        } catch (IOException e) {            e.printStackTrace();        } }public static String getProperty(String key){return prop.getProperty(key);}public static void main(String[] args) {System.out.println(Property.getProperty("UPay.AGENCY_RECHARGE_RET_URL"));}}