[Java] Map/List log 출력

출처 : Java Map 전체 출력 (tistory.com)

[Java] Map / List 출력해보기 (tistory.com)

[Java] Map / List 출력해보기

Java Map 전체 출력

 

1. Map

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
 
public class MapIterationSample {
 
    public static void main(String[] args) {
        
        HashMap<String, String> hashMap  = new HashMap<String, String>();
 
        hashMap.put("test3", "name5");
        hashMap.put("test4", "name2");
        hashMap.put("test5", "name1");
        hashMap.put("test1", "name3");
        hashMap.put("test2", "name4");
 
 
        System.out.println("=================Type1=================");
 
        Iterator<String> mapIter = hashMap.keySet().iterator();
 
        while(mapIter.hasNext()){
 
            String key = mapIter.next();
            String value = hashMap.get( key );
 
            System.out.println(key+" : "+value);
 
        }
 
        System.out.println("=================Type2=================");
 
        for(Map.Entry<String, String> elem : hashMap.entrySet()){
 
            String key = elem.getKey();
            String value = elem.getValue();
 
            System.out.println(key+" : "+value);
 
        }
 
        System.out.println("=================Type2=================");
 
        for(String key : hashMap.keySet()){
 
            String value = hashMap.get(key);
 
            System.out.println(key+" : "+value);
 
        }
 
 
    }
 
}

 

2. List

public static void printList(List<Map<String,Object>> list){
    Iterator<Entry<String,Object>> iterator = null;
    Entry<String,Object> entry = null;
    log.debug("--------------------printList--------------------\n");
    int listSize = list.size();
    for(int i=0; i<listSize; i++){
        log.debug("list index : "+i);
        iterator = list.get(i).entrySet().iterator();
        while(iterator.hasNext()){
            entry = iterator.next();
            log.debug("key : "+entry.getKey()+",\tvalue : "+entry.getValue());
        }
        log.debug("\n");
    }
    log.debug("------------------------------------------------\n");
}