Java The code is as follows :

package Test01;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry; public class Test05 { // map convert to list
@SuppressWarnings({ "unchecked", "rawtypes" })
public static List mapTransitionList(Map map) {
List list = new ArrayList();
Iterator iter = map.entrySet().iterator(); // get map Of Iterator
while (iter.hasNext()) {
Entry entry = (Entry) iter.next();
list.add(entry.getKey());
list.add(entry.getValue());
}
return list;
} @SuppressWarnings("unchecked")
public static void main(String[] args) {
@SuppressWarnings("rawtypes")
Map map = new HashMap();
map.put("aaa", 11);
map.put("bbb", "22ss");
map.put("ccc", " Chinese characters ");
@SuppressWarnings("rawtypes")
List list = mapTransitionList(map);
for (int i = 0; i < list.size(); i++) {
System.out.print(list.get(i) + " ");
}
}
}

After the code runs, the effect is as follows :

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