AbstractMap.SimpleEntry setValue(V value) Method in Java with Examples

AbstractMap.SimpleEntry<K, V> is used to maintain a key and a value entry. The value can be changed using the setValue method. This class facilitates the process of building custom map implementations.

setValue(V value) method of AbstractMap.SimpleEntry<K, V> used to replace the current value of map with the specified value passed as parameter.

Syntax:



public V setValue(V value)

Parameters: This method accepts the value we want to set.

Return value: This method return the old value corresponding to the entry.

Below programs illustrate setValue(V value) method:
Program 1:

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// Java program to demonstrate
// AbstractMap.SimpleEntry.setValue() method
  
import java.util.*;
  
public class GFG {
  
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static void main(String[] args)
    {
  
        AbstractMap.SimpleEntry<Integer, Integer>
            map
            = new AbstractMap
                  .SimpleEntry(0, 123);
  
        // change value to 2122425
        Integer newValue = 2122425;
        Integer oldValue = map.setValue(newValue);
  
        System.out.println("Value changed from " + oldValue
                           + " to " + map.getValue());
    }
}

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Output:

Value changed from 123 to 2122425

Program 2:

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// Java program to demonstrate
// AbstractMap.SimpleEntry.setValue() method
  
import java.util.*;
  
public class GFG {
  
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static void main(String[] args)
    {
  
        AbstractMap.SimpleEntry<String, String> map
            = new AbstractMap
                  .SimpleEntry<String, String>("Captain:", "Dhoni");
  
        // change value to Kohli
        String newValue = "Kohli";
        String oldValue = map.setValue(newValue);
  
        System.out.println("Value changed from " + oldValue
                           + " to " + map.getValue());
    }
}

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Output:

Value changed from Dhoni to Kohli

References: https://docs.oracle.com/javase/10/docs/api/java/util/AbstractMap.SimpleEntry.html#setValue(V)



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