Hi, I'm trying to iterate over the map to get the keys and put them in the set but I'm not sure how to accomplish that.
Thanks!
package com.codegym.task.task09.task0927;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.Iterator;
/*
Ten cats
*/
public class Solution {
public static void main(String[] args) {
Map<String, Cat> map = createMap();
Set<Cat> set = convertMapToSet(map);
printCatSet(set);
}
public static Map<String, Cat> createMap() {
Map<String, Cat> map = new HashMap<String, Cat>();
map.put("cat1", new Cat("cat1"));
map.put("cat2", new Cat("cat2"));
map.put("cat3", new Cat("cat3"));
map.put("cat4", new Cat("cat4"));
map.put("cat5", new Cat("cat5"));
map.put("cat6", new Cat("cat6"));
map.put("cat7", new Cat("cat7"));
map.put("cat8", new Cat("cat8"));
map.put("cat9", new Cat("cat9"));
map.put("cat10", new Cat("cat10"));
return map;
//write your code here
}
public static Set<Cat> convertMapToSet(Map<String, Cat> map) {
Set<Cat> set = new HashSet<Cat>();
/*int i = 0;
Iterator<Map.Entry<String, Cat>> iterator = map.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry<String, Cat> entry = iterator.next();
set.add(entry.getKey());
i += pair.getKey() + pair.getValue();
}*/
return set;//write your code here
}
public static void printCatSet(Set<Cat> set) {
for (Cat cat : set) {
System.out.println(cat);
}
}
public static class Cat {
private String name;
public Cat(String name) {
this.name = name;
}
public String toString() {
return "Cat " + this.name;
}
}
}