Removing element from a TreeMap

import java.util.TreeMap;

public class TreeMapRemove {

public static void main(String[] args) {

//creating our tree map

TreeMap<Integer, String> tm = new TreeMap<>();

//Inserting element in our TreeMap

tm.put(17, "this");

tm.put(13, "Invent");

tm.put(18, "blog");

tm.put(16, "on");

tm.put(15, "you");

tm.put(14, "welcomes");

tm.put(12, "Java");

//deleting element from TreeMap

System.out.println("Before invoking remove opeation the mapping is");

System.out.println(tm);

tm.remove(12);

System.out.println("After invoking remove opeation the mapping is");

System.out.println(tm);

tm.remove(14, "welcomes");

System.out.println("After invoking remove opeation the mapping is");

System.out.println(tm);

tm.clear();

System.out.println("After invoking remove opeation the mapping is");

System.out.println(tm);

}

}