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.
getValue() method of AbstractMap.SimpleEntry<K, V> returns the value corresponding to a entry made in this class.
Syntax:
public K getValue()
Parameters: This method accepts nothing.
Return value: This method returns the value corresponding to this entry.
Below programs illustrate getValue() method:
Program 1:
// Java program to demonstrate // AbstractMap.SimpleEntry.getValue() method import java.util.*;
import java.util.AbstractMap.SimpleEntry;
public class GFG {
@SuppressWarnings ({ "unchecked" , "rawtypes" })
public static void main(String[] args)
{
// create a ArrayList of Map
ArrayList<AbstractMap
.SimpleEntry<Integer, Integer> > arrayList = new ArrayList<AbstractMap
.SimpleEntry<Integer, Integer> >(); // add values
arrayList.add( new AbstractMap.SimpleEntry( 0 , 123 ));
arrayList.add( new AbstractMap.SimpleEntry( 1 , 130 ));
arrayList.add( new AbstractMap.SimpleEntry( 2 , 994 ));
// print keys
for ( int i = 0 ; i < arrayList.size(); i++) {
// get map from list
AbstractMap.SimpleEntry<Integer, Integer>
map = arrayList.get(i);
// get value from map using getValue()
int value = map.getValue();
System.out.println( "Value " + value);
}
}
} |
Value 123 Value 130 Value 994
Program 2:
// Java program to demonstrate // AbstractMap.SimpleEntry.getValue() method import java.util.*;
public class GFG {
@SuppressWarnings ({ "unchecked" , "rawtypes" })
public static void main(String[] args)
{
// create a ArrayList of Map
ArrayList<AbstractMap
.SimpleEntry<String, String> > arrayList = new ArrayList<AbstractMap
.SimpleEntry<String, String> >(); // add values
arrayList.add( new AbstractMap
.SimpleEntry( " 001AB " , " Emp 1" ));
arrayList.add( new AbstractMap
.SimpleEntry( " 011AC " , " Emp 2" ));
arrayList.add( new AbstractMap
.SimpleEntry( " 111AD " , " Emp 3" ));
arrayList.add( new AbstractMap
.SimpleEntry( " 101BE " , " Emp 4" ));
arrayList.add( new AbstractMap
.SimpleEntry( " 110CE " , " Emp 5" ));
// print keys
for ( int i = 0 ; i < arrayList.size(); i++) {
// get map from list
AbstractMap.SimpleEntry<String, String>
map = arrayList.get(i); // get value from map using getValue()
String value = map.getValue();
System.out.println( "Value " + value);
}
}
} |
Value Emp 1 Value Emp 2 Value Emp 3 Value Emp 4 Value Emp 5
References: https://docs.oracle.com/javase/10/docs/api/java/util/AbstractMap.SimpleEntry.html#getValue()