J250511/01-JavaSE阶段代码/J20250728/Demo07_Properties.java

package J20250728;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;
import java.util.Set;

/**
 * @author WanJl
 * @version 1.0
 * @title Demo07_Properties
 * @description
 * @create 2025/7/28
 */
public class Demo07_Properties {
    public static void main(String[] args) throws IOException {
        //创建集合
        Properties prop=new Properties();
        //创建字符输入流
        FileReader fr=new FileReader("myfile.properties");
        //加载文件中的键值对属性列表
        prop.load(fr);
        //遍历集合
        Set<String> names = prop.stringPropertyNames();
        for (String key : names){
            String value = prop.getProperty(key);
            System.out.println(key+"==>"+value);
        }
    }
}