map<char,string> mymap; mymap['a'] = "an element"; mymap['b'] = "another element"; mymap['c'] = mymap['b']; cout << "mymap['a'] is " << mymap['a'] << endl; cout << "mymap['b'] is " << mymap['b'] << endl; cout << "mymap['c'] is " << mymap[...
importjava.util.HashMap;importjava.util.Map;publicclassMain{publicstaticvoidmain(String[]args){Map<String,String>map=newHashMap<>();map.put("key1","value1");map.put("key2","value2");map.put("key3","value3");for(Map.Entry<String,String>entry:map.entrySet()){System.out.println("...
//将Map接口,变为Set接口 Set<Entry<String, String>> entrySet = hashMap.entrySet(); //得到Iterator Iterator<Entry<String, String>> iterator = entrySet.iterator(); //同时输出key和value while (iterator.hasNext()) { //通过iterator.next(),得到key和value Entry<String, String> next = iterator....
publicvoidtest(Map<String,String>parameters){ Setset=parameters.entrySet(); Map.Entry[]entries=(Map.Entry[])set.toArray(newMap.Entry[set.size()]); for(inti=0;i<entries.length;i++){ System.out.println("Key:"+entries[i].getKey().toString()); System.out.println("Value:"+entries[i]...
51CTO博客已为您找到关于java 输出map的key和value的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及java 输出map的key和value问答内容。更多java 输出map的key和value相关解答可以来51CTO博客参与分享和学习,帮助广大IT技术人实现成长和进步。