create hash map in java with values code example

Example 1: 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");

Example 2: how to create a hashmap in java

HashMap<Integer,String> map=new HashMap<Integer,String>();//key is integer, value is String