hashmap get value java

1
2//Import Hashmap
3import java.util.HashMap;
4   
5    HashMap<String, String> dir = new HashMap<String, String>();
6//Add key, values  
7    dir.put("hi", "hello");
8	dir.put("wow", "amazing");
9//print value for hi.
10    System.out.println(dir.get("hi");

1import java.util.HashMap;
2//Within a class
3//You can do new HashMap<Key Type, Value Type>();, but you don't need to
4HashMap<Int, String> examplehashmap=new HashMap<>();
5{
6//put in values
7 examplehashmap.put(5, "example");
8};
9//get value
10examplehashmap.get(5);
11//returns "example"

1package com.tutorialspoint;
2
3import java.util.*;
4
5public class HashMapDemo {
6   public static void main(String args[]) {
7      
8      // create hash map
9      HashMap newmap = new HashMap();
10
11      // populate hash map
12      newmap.put(1, "tutorials");
13      newmap.put(2, "point");
14      newmap.put(3, "is best");
15
16      // get value of key 3
17      String val = (String)newmap.get(3);
18
19      // check the value
20      System.out.println("Value for key 3 is: " + val);
21   }    
22}