How to Search key in TreeMap Java

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

public class TreeMapSearchKey {

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(“TreeMap Is=”+tm);
System.out.println(tm.containsKey(1));
System.out.println(tm.containsKey(18));
System.out.println(tm.containsKey(3));
System.out.println(tm.containsKey(25));

}

}

Output:

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

true

false

true

false

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