In Java, you can create a map object using the Map interface and a concrete implementation of the Map interface, such as HashMap or TreeMap.
Here's an example of how to create a HashMap object in Java:
Map<String, Integer> map = new HashMap<>();
In this example, we're creating a Map object named map that maps strings to integers. The Map interface is parameterized with two types: the type of the keys (String in this case) and the type of the values (Integer in this case). The HashMap class is a concrete implementation of the Map interface that uses a hash table to store the keys and values.
You can also create a TreeMap object, which is a concrete implementation of the Map interface that stores the keys in a sorted order:
Map<String, Integer> map = new TreeMap<>();
You can find more information about the Map interface and the available implementations in the Java documentation.