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Java initialize map with values in one line

Java 11 initialize map

Map<String, String> emptyMap = Map.of();
Map<String, String> singletonMap = Map.of("key1", "value");
Map<String, String> map = Map.of("key1","value1", "key2", "value2");

Source: baeldung.com

Java initialize map with values in one line

Map<String, Integer> map = Stream.of(
  new AbstractMap.SimpleEntry<>("idea", 1), 
  new AbstractMap.SimpleEntry<>("mobile", 2))
  .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));

Source: baeldung.com

Java initialize map with values in one line

Map<String, Integer> map = Stream.of(
  new AbstractMap.SimpleImmutableEntry<>("idea", 1),    
  new AbstractMap.SimpleImmutableEntry<>("mobile", 2))
  .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));

Source: baeldung.com

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