java map get the key from value
public static <T, E> Set<T> getKeyByValue(Map<T, E> map, E value) {
return map.entrySet()
.stream()
.filter(entry -> Objects.equals(entry.getValue(), value))
.map(Map.Entry::getKey)
.collect(Collectors.toSet());
}java map create with values
Map<String, String> doubleBraceMap = new HashMap<String, String>() {{
put("key1", "value1");
put("key2", "value2");
}};Copyright © 2021 Codeinu
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