package com.text;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Set;
public class Test6 {
public static void main(String[] args) {
HashMap<String,String> map = new HashMap<String,String>();
map.put("a", "11");
map.put("b", "22");
map.put("c", "33");
map.put("d", "44");
map.put("e", "55");
Set<Entry<String,String>> entry = map.entrySet() ;
Iterator<Entry<String,String>> iterator = entry.iterator() ;
while(iterator.hasNext()){
Entry<String,String> en = iterator.next() ;
System.out.println(en.getKey() + "===" + en.getValue());
}
}
}
有谁能讲一下这个entry内部是怎么储存的,,,Set型的entry怎么将key和value转成entry啊??? |