package J20250728; import java.util.Properties; import java.util.Set; /** * @author WanJl * @version 1.0 * @title Demo05_Properties * @description * @create 2025/7/28 */ public class Demo05_Properties { public static void main(String[] args) { Properties prop=new Properties(); //使用Properties特有的方法添加属性键值对(添加元素) prop.setProperty("name","张三"); prop.setProperty("age","25"); prop.setProperty("sex","男"); prop.setProperty("username","zhangsan"); prop.setProperty("password","123456"); Set names = prop.stringPropertyNames(); for (String key:names){ String value = prop.getProperty(key); System.out.println(key+"->"+value); } } }