Answers for "iterate over a hashmap in java 8"

31

java iterate through hashmap

for (Map.Entry<String, String> entry : yourHashMap.entrySet()) {
	System.out.println(entry.getKey() + " = " + entry.getValue());
}
Posted by: Guest on April-13-2020
4

java 8 loop in map

Map<String, Integer> items = new HashMap<>();
items.put("A", 10);
items.put("B", 20);
items.put("C", 30);
items.put("D", 40);
items.put("E", 50);
items.put("F", 60);

items.forEach((k,v)->System.out.println("Item : " + k + " Count : " + v));

items.forEach((k,v)->{
	System.out.println("Item : " + k + " Count : " + v);
	if("E".equals(k)){
		System.out.println("Hello E");
	}
});
Posted by: Guest on April-25-2020
2

iterate hashmap java

public static void printMap(Map mp) {
    Iterator it = mp.entrySet().iterator();
    while (it.hasNext()) {
        Map.Entry pair = (Map.Entry)it.next();
        System.out.println(pair.getKey() + " = " + pair.getValue());
        it.remove(); // avoids a ConcurrentModificationException
    }
}
Posted by: Guest on April-26-2020
0

java 8 map foreach

public void iterateUsingLambda(Map<String, Integer> map) {
    map.forEach((k, v) -> System.out.println((k + ":" + v)));
}
Posted by: Guest on May-29-2020

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