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Retrieve a set of Map.Entry elements from a HashMap in Java
Create a HashMap and add elements to it −
HashMap hm = new HashMap();
hm.put("Wallet", new Integer(700));
hm.put("Belt", new Integer(600));
hm.put("Backpack", new Integer(1200));The following is the code snippet to retrieve a set of Map.Entry elements −
Set s = hm.entrySet();
Iterator iter = s.iterator();
System.out.println("
Key\tValue");
while (iter.hasNext()) {
Map.Entry e = (Map.Entry) iter.next();
System.out.println(e.getKey() + " " + e.getValue());
}The following is an example to retrieve a set of Map.Entry elements from a HashMap −
Example
import java.util.*;
public class Demo {
public static void main(String args[]) {
// Create hash map
HashMap hm = new HashMap();
hm.put("Wallet", new Integer(700));
hm.put("Belt", new Integer(600));
hm.put("Backpack", new Integer(1200));
System.out.println("Map = "+hm);
Set s = hm.entrySet();
Iterator iter = s.iterator();
System.out.println("
Key\tValue");
while (iter.hasNext()) {
Map.Entry e = (Map.Entry) iter.next();
System.out.println(e.getKey() + " " + e.getValue());
}
}
}Output
Map = {Backpack=1200, Belt=600, Wallet=700}
KeyValue
Backpack 1200
Belt 600
Wallet 700
Updated on: 30-Jul-2019
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