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Write a Java Program to Sort a Map By Values
PROGRAM: Java Program to Sort a Map By Values
/*Java Program to Sort a Map By Values*/
import java.util.*;
import java.util.Map.Entry;
class Main {
public static void main(String[] args) {
// create a map and store elements to it
LinkedHashMap<String, String> capitals = new LinkedHashMap();
capitals.put(“Nepal”, “Kathmandu”);
capitals.put(“India”, “New Delhi”);
capitals.put(“United States”, “Washington”);
capitals.put(“England”, “London”);
capitals.put(“Australia”, “Canberra”);
// call the sortMap() method to sort the map
Map<String, String> result = sortMap(capitals);
for (Map.Entry entry : result.entrySet()) {
System.out.print(“Key: ” + entry.getKey());
System.out.println(” Value: ” + entry.getValue());
}
}
public static LinkedHashMap sortMap(LinkedHashMap map) {
List <Entry<String, String>> capitalList = new LinkedList<>(map.entrySet());
// call the sort() method of Collections
Collections.sort(capitalList, (l1, l2) -> l1.getValue().compareTo(l2.getValue()));
// create a new map
LinkedHashMap<String, String> result = new LinkedHashMap();
// get entry from list to the map
for (Map.Entry<String, String> entry : capitalList) {
result.put(entry.getKey(), entry.getValue());
}
return result;
}
}
