实现将HashMap转换成为ArrayList，并将map的Key 、Value分别存放到两个ArrayList当中
实现将HashMap转换成为ArrayList，并将map的Key 、Value分别存放到两个ArrayList当中
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
public class ConvertMapToList{
publicstatic void main(String[] args) {
Map map = new HashMap();
map.put("a", "a1");
map.put("b", "b1");
map.put("c", "c1");
List listKey = new ArrayList();
List listValue = new ArrayList();
Iterator it = map.keySet().iterator();
while (it.hasNext()) {
System.out.println(map);
String key = it.next().toString();
listKey.add(key);
listValue.add(map.get(key));
}
System.out.println("Convert Finished !");
//output the context of the ArrayList
for(int i =0 ;i<listKey.size();i++){
System.out.println(listKey);
System.out.print("Key :"+listKey.get(i));
System.out.println(" Value :"+listValue.get(i));
}
}
}