foreach hashmap java 8 code example
Example 1: 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");
}
});
Example 2: java foreach map
map.forEach((k, v) -> System.out.printf( " %s : %d \n" , k,v) );
Example 3: java 8 map foreach
public void iterateUsingLambda(Map<String, Integer> map) {
map.forEach((k, v) -> System.out.println((k + ":" + v)));
}
Example 4: java 8 map foreach
public void iterateUsingStreamAPI(Map<String, Integer> map) {
map.entrySet().stream()
.forEach(e -> System.out.println(e.getKey() + ":" + e.getValue()));
}