java get value from hashmap by key code example

Example 1: hashmap get value java

//Import Hashmap
import java.util.HashMap;
   
    HashMap<String, String> dir = new HashMap<String, String>();
//Add key, values  
    dir.put("hi", "hello");
	dir.put("wow", "amazing");
//print value for hi.
    System.out.println(dir.get("hi");

Example 2: java get keys from hashmap

//returns as set
hashmap.keySet()

Example 3: java hashmap get value

package com.tutorialspoint;

import java.util.*;

public class HashMapDemo {
   public static void main(String args[]) {
      
      // create hash map
      HashMap newmap = new HashMap();

      // populate hash map
      newmap.put(1, "tutorials");
      newmap.put(2, "point");
      newmap.put(3, "is best");

      // get value of key 3
      String val = (String)newmap.get(3);

      // check the value
      System.out.println("Value for key 3 is: " + val);
   }    
}