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package com.heima.otheio;
import java.util.Enumeration;
import java.util.Properties;
public class Demo6_Properties {
public static void main(String[] args) {
Properties prop=new Properties();//properties是hashtable的子类
prop.put("abc", "123");
Enumeration<String> en=(Enumeration<String>) prop.propertyNames();
while(en.hasMoreElements()) {
String key=en.nextElement();
String value=prop.getProperty(key);
System.out.println(key+"="+value);
}
System.out.println(prop); //默认调用了tostring方法
}
}