LinkedHashMap get() Method in Java with Examples
Last Updated :
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
import java.util.*;
public class GFG {
public static void main(String[] args)
{
LinkedHashMap<Integer, String> li_hash_map
= new LinkedHashMap<Integer, String>();
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" );
System.out.println( "Initial Mappings are: "
+ li_hash_map);
System.out.println( "The Value is: "
+ li_hash_map.get( 25 ));
System.out.println( "The Value is: "
+ li_hash_map.get( 10 ));
}
}
|
Output:
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
import java.util.*;
public class Linked_Hash_Map_Demo {
public static void main(String[] args)
{
LinkedHashMap<String, Integer> li_hash_map
= new LinkedHashMap<String, Integer>();
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 );
System.out.println( "Initial Mappings are: "
+ li_hash_map);
System.out.println( "The Value is: "
+ li_hash_map.get( "Geeks" ));
System.out.println( "The Value is: "
+ li_hash_map.get( "You" ));
}
}
|
Output:
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.
Like Article
Suggest improvement
Share your thoughts in the comments
Please Login to comment...