w3resource
Java Exercises

Java Collection, TreeMap Exercises: Search a key in a Tree Map

Java Collection, TreeMap Exercises: Exercise-3 with Solution

Write a Java program to search a key in a Tree Map.

Sample Solution:-

Java Code:

import java.util.*;  
public class Example3 {  
   public static void main(String args[]){  
  
  // Create a tree map
   TreeMap<String,String> tree_map1=new TreeMap<String,String>();      
  
  // Put elements to the map 
  tree_map1.put("C1", "Red");
  tree_map1.put("C2", "Green");
  tree_map1.put("C3", "Black");
  tree_map1.put("C4", "White"); 
    
  System.out.println(tree_map1);
        if(tree_map1.containsKey("C1")){
            System.out.println("The Tree Map contains key C1");
        } else {
            System.out.println("The Tree Map does not contain key C1");
        }
        if(tree_map1.containsKey("C5")){
            System.out.println("The Tree Map contains key C5");
        } else {
            System.out.println("The TreeMap does not contain key C5");
        }
    }
}

Sample Output:

{C1=Red, C2=Green, C3=Black, C4=White}                                 
The Tree Map contains key C1                                           
The TreeMap does not contain key C5

Java Code Editor:

Contribute your code and comments through Disqus.

What is the difficulty level of this exercise?