java 11 initialize map code example

Example 1: new hashmap java

Map myMap = new HashMap() {{
        put("a", "b");
        put("c", "d");
    }};

Example 2: java 11 initialize map

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