How to delete all elements from TreeMap

import java.util.Map;
import java.util.TreeMap;

public class TreeMapDeleteAll {

public static void main(String[] args) {

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

// add key and values
tm.put(1,”java”);
tm.put(2,”cpp”);
tm.put(3,”php”);
tm.put(4,”c”);
tm.put(5, “mysql”);

//print treemap

System.out.println(“Before Clear TreeMap Is=”+tm);

//Removes all of the mappings from this map
tm.clear();

System.out.println(“After Clear TreeMap Is =”+tm);

}

}

Output:

Before Clear TreeMap Is={1=java, 2=cpp, 3=php, 4=c, 5=mysql}

After Clear TreeMap Is ={}

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