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Get element by index in LinkedHashMap
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
public class LinkedHashMapValueByIndexArray {
public static void main(String []args){
LinkedHashMap<String, Integer> map = new LinkedHashMap<String, Integer>();
map.put("Qatar", 98814);
map.put("Luxembourg", 78670);
map.put("Singapore", 64584);
map.put("Norway", 54947);
map.put("Brunei", 53431);
map.put("United States", 53101);
map.put("Hong Kong", 52722);
map.put("Switzerland", 46430);
Set<Map.Entry<String, Integer>> mapSet = map.entrySet();
Map.Entry<String, Integer> elementAt5 = (Map.Entry<String, Integer>) mapSet.toArray()[5];
System.out.println(elementAt5.getKey());
}
}
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.ArrayList;
public class LinkedHashMapValueByIndexArrayList {
public static void main(String []args){
LinkedHashMap<String, Integer> map = new LinkedHashMap<String, Integer>();
map.put("Qatar", 98814);
map.put("Luxembourg", 78670);
map.put("Singapore", 64584);
map.put("Norway", 54947);
map.put("Brunei", 53431);
map.put("United States", 53101);
map.put("Hong Kong", 52722);
map.put("Switzerland", 46430);
Set<Map.Entry<String, Integer>> mapSet = map.entrySet();
Map.Entry<String, Integer> elementAt5 = (new ArrayList<Map.Entry<String, Integer>>(mapSet)).get(5);
System.out.println(elementAt5.getKey());
}
}
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.ArrayList;
import java.util.Iterator;
public class LinkedHashMapValueByIndexIterate {
public static void main(String []args){
LinkedHashMap<String, Integer> map = new LinkedHashMap<String, Integer>();
map.put("Qatar", 98814);
map.put("Luxembourg", 78670);
map.put("Singapore", 64584);
map.put("Norway", 54947);
map.put("Brunei", 53431);
map.put("United States", 53101);
map.put("Hong Kong", 52722);
map.put("Switzerland", 46430);
Set<Map.Entry<String, Integer>> mapSet = map.entrySet();
Iterator<Map.Entry<String, Integer>> ite = mapSet.iterator();
int n = 5;
while(n-- > 0) {
if(ite.hasNext()) {
ite.next();
}
}
if(n == -1 && ite.hasNext()) {
System.out.println(ite.next().getKey());
}
}
}
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