SortedMap get() method in Java with Examples
Last Updated :
30 Sep, 2019
The get() method of SortedMap interface in Java 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.
Syntax:
thisMap.get(Object key_element)
Parameter: The method takes one parameter key_element of object type and refers to the key whose associated value is supposed to be fetched.
Return Value: The method returns the value associated with the key_element in this Map collection.
Note: The get() method in SortedMap is inherited from the Map interface in Java.
Below programs illustrates the working of java.util.SortedMap.get() method:
Program 1: Mapping String Values to Integer Keys.
import java.util.*;
public class Map_Demo {
public static void main(String[] args)
{
SortedMap<Integer, String> map
= new TreeMap<Integer, String>();
map.put( 10 , "Geeks" );
map.put( 15 , "4" );
map.put( 20 , "Geeks" );
map.put( 25 , "Welcomes" );
map.put( 30 , "You" );
System.out.println(
"Initial Mappings are: "
+ map);
System.out.println(
"The Value is: "
+ map.get( 25 ));
System.out.println(
"The Value is: "
+ 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
Program 2: Mapping Integer Values to String Keys.
import java.util.*;
public class Map_Demo {
public static void main(String[] args)
{
SortedMap<String, Integer> map
= new TreeMap<String, Integer>();
map.put( "Geeks" , 10 );
map.put( "4" , 15 );
map.put( "Geeks" , 20 );
map.put( "Welcomes" , 25 );
map.put( "You" , 30 );
System.out.println(
"Initial Mappings are: "
+ map);
System.out.println(
"The Value is: "
+ map.get( "Geeks" ));
System.out.println(
"The Value is: "
+ map.get( "You" ));
}
}
|
Output:
Initial Mappings are: {4=15, Geeks=20, 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.
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Map.html#get(java.lang.Object)
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