HashMap getOrDefault(key, defaultValue) method in Java with Examples
The getOrDefault(Object key, V defaultValue) method of Map interface, implemented by HashMap class is used to get the value mapped with specified key. If no value is mapped with the provided key then the default value is returned.
Syntax:
default V getOrDefault(Object key, V defaultValue)
Parameters: This method accepts two parameters:
- key: which is the key of the element whose value has to be obtained.
- defaultValue: which is the default value that has to be returned, if no value is mapped with the specified key.
Return Value: This method returns value mapped with the specified key, otherwise default value is returned.
Program 1:
import java.util.*;
public class GFG {
public static void main(String[] args)
{
HashMap<String, Integer> map
= new HashMap<>();
map.put( "a" , 100 );
map.put( "b" , 200 );
map.put( "c" , 300 );
map.put( "d" , 400 );
System.out.println( "HashMap: "
+ map.toString());
int k = map.getOrDefault( "b" , 500 );
System.out.println( "Returned Value: " + k);
}
}
|
Output:
HashMap: {a=100, b=200, c=300, d=400}
Returned Value: 200
Program 2:
import java.util.*;
public class GFG {
public static void main(String[] args)
{
HashMap<String, Integer> map
= new HashMap<>();
map.put( "a" , 100 );
map.put( "b" , 200 );
map.put( "c" , 300 );
map.put( "d" , 400 );
System.out.println( "HashMap: "
+ map.toString());
int k = map.getOrDefault( "y" , 500 );
System.out.println( "Returned Value: " + k);
}
}
|
Output:
HashMap: {a=100, b=200, c=300, d=400}
Returned Value: 500
References: https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html#getOrDefault-java.lang.Object-V-
Last Updated :
15 Oct, 2019
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