Kotlin HashMap class implements the MutableMap interface using Hash table. It store the data in the form of key and value pair. It is represented as HashMap<key, value> or HashMap<K, V>.The implementation of HashMap class does not make guarantees about the order of data of key, value...
System.out.println(" Mappings are: "+map); System.out.println("is java present? :: "+ map.containsKey("java"));//check if map contains key javascript } } Output: Mappings are: {python=20, c++=30, java=10, c=25, .net=15} is java present? :: true Example 2 importjava.util....
HashMap class is found in the java.util package. HashMap in Java is like the legacy Hashtable class, but it is not synchronized. It allows us to store the null elements as well, but there should be only one null key. Since Java 5, it is denoted as HashMap<K,V>, where K ...