SortedMap entrySet() method in Java with Examples
Last Updated :
26 Nov, 2018
The entrySet() method of SortedMap interface in Java is used to create a set out of the same elements contained in the map. It basically returns a set view of the map or creates a new set and store the map elements into them.
Syntax:
SortedMap.entrySet()
Parameters: The method does not take any parameter.
Return Value: The method returns a set having same elements as the map.
Below programs are used to illustrate the working of above method:
Program 1: Using HashMap.
import java.util.*;
public class SortedMap_Demo {
public static void main(String[] args)
{
SortedMap<String, Integer>
sotree_map = new TreeMap<String,
Integer>();
sotree_map.put( "Geeks" , 10 );
sotree_map.put( "4" , 15 );
sotree_map.put( "Geeks" , 20 );
sotree_map.put( "Welcomes" , 25 );
sotree_map.put( "You" , 30 );
System.out.println( "Initial Mappings are: "
+ sotree_map);
System.out.println( "The set is: "
+ sotree_map.entrySet());
}
}
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Program 2:
import java.util.*;
public class SortedMap_Demo {
public static void main(String[] args)
{
SortedMap<Integer, String>
sotree_map = new TreeMap<Integer,
String>();
sotree_map.put( 10 , "Geeks" );
sotree_map.put( 15 , "4" );
sotree_map.put( 20 , "Geeks" );
sotree_map.put( 25 , "Welcomes" );
sotree_map.put( 30 , "You" );
System.out.println( "Initial Mappings are: "
+ sotree_map);
System.out.println( "The set is: "
+ sotree_map.entrySet());
}
}
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Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.
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