LinkedHashMap get() Method in Java with Examples - GeeksforGeeks

17 Nov, 2021
In Java, get() method of LinkedHashMap class is used to retrieve or fetch the value mapped by a particular key mentioned in the parameter. It returns NULL when the map contains no such mapping for the key.
--> java.util Package
    --> LinkedHashMap Class
         --> get() Method  
Syntax: 
Linked_Hash_Map.get(Object key_element)
Parameter: One parameter key_element of object type and refers to the key whose associated value is supposed to be fetched.
Return Type: Value associated with the key_element in the parameter.
Example 1: Mapping String Values to Integer Keys. 
Java
// Java Program to illustrate get() method// of LinkedHashMap// Mapping String Values to Integer Keys  // Importing required classesimport java.util.*;  // Main classpublic class GFG {      // Main driver method    public static void main(String[] args)    {          // Creating an empty HashMap        LinkedHashMap<Integer, String> li_hash_map            = new LinkedHashMap<Integer, String>();          // Mapping string values to int keys        // using put() method        li_hash_map.put(10, "Geeks");        li_hash_map.put(15, "4");        li_hash_map.put(20, "Geeks");        li_hash_map.put(25, "Welcomes");        li_hash_map.put(30, "You");          // Printing all elements of LinkedHashMap        System.out.println("Initial Mappings are: "                           + li_hash_map);          // Getting the value of 25        System.out.println("The Value is: "                           + li_hash_map.get(25));          // Getting the value of 10        System.out.println("The Value is: "                           + li_hash_map.get(10));    }}
Initial Mappings are: {10=Geeks, 15=4, 20=Geeks, 25=Welcomes, 30=You}
The Value is: Welcomes
The Value is: Geeks
 
Example 2: Mapping Integer Values to String Keys 
Java
// Java Program to Illustrate get() method// Mapping Integer Values to String Keys  // Importing required classesimport java.util.*;  // Main classpublic class Linked_Hash_Map_Demo {      // Main driver method    public static void main(String[] args)    {          // Creating an empty LinkedHashMap        LinkedHashMap<String, Integer> li_hash_map            = new LinkedHashMap<String, Integer>();          // Mapping int values to string keys        // using put() method        li_hash_map.put("Geeks", 10);        li_hash_map.put("4", 15);        li_hash_map.put("Geeks", 20);        li_hash_map.put("Welcomes", 25);        li_hash_map.put("You", 30);          // Printing all elements of LinkedHashMap        System.out.println("Initial Mappings are: "                           + li_hash_map);          // Getting the value of "Geeks"        System.out.println("The Value is: "                           + li_hash_map.get("Geeks"));          // Getting the value of "You"        System.out.println("The Value is: "                           + li_hash_map.get("You"));    }}
Initial Mappings are: {Geeks=20, 4=15, Welcomes=25, You=30}
The Value is: 20
The Value is: 30
 
Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.
solankimayank
Java - util package
Java-Collections
Java-LinkedHashMap
Java
Java
Java-Collections
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.
Comments
Old Comments
Arrays in Java
Split() String method in Java with examples
For-each loop in Java
Arrays.sort() in Java with examples
Reverse a string in Java
HashMap in Java with Examples
Object Oriented Programming (OOPs) Concept in Java
Initialize an ArrayList in Java
Interfaces in Java
ArrayList in Java