Java HashMap entrySet()

Java HashMap [Java HashMap] Java HashMap

entrySet() Set

entrySet() 

hashmap.entrySet()

hashmap HashMap

Set

Set HashMap set

entrySet()

import java.util.HashMap;

class Main {
    public static void main(String[] args) {
        // HashMap
        HashMap<Integer, String> sites = new HashMap<>();

        // HashMap
        sites.put(1, "Google");
        sites.put(2, "Runoob");
        sites.put(3, "Taobao");
        System.out.println("sites HashMap: " + sites);

        // set view
        System.out.println("Set View: " + sites.entrySet());
    }
}

sites HashMap: {1=Google, 2=Runoob, 3=Taobao}
Set View: [1=Google, 2=Runoob, 3=Taobao]

entrySet() for-each HashMap

import java.util.HashMap;
import java.util.Map.Entry;

class Main {
    public static void main(String[] args) {

        // HashMap
        HashMap<String, Integer> numbers = new HashMap<>();
        numbers.put("One", 1);
        numbers.put("Two", 2);
        numbers.put("Three", 3);
        System.out.println("HashMap: " + numbers);

        // HashMap
        System.out.print("Entries: ");

        // entrySet() HashMap set
        // for-each loop
        for(Entry<String, Integer> entry: numbers.entrySet()) {
            System.out.print(entry);
            System.out.print(", ");
        }
    }
}

HashMap: {One=1, Two=2, Three=3}
Entries: One=1, Two=2, Three=3,

Java HashMap [Java HashMap] Java HashMap