The course is designed to give you a head start into Java programming and train you for both core and advanced Java concepts along with various Java frameworks like Hibernate & Spring. Edureka’s Java J2EE and SOA training and certification course is designed for students and professionals who want to be a Java Developer. If you wish to learn more, check out the Java Certification Training by Edureka, a trusted online learning company with a network of more than 250,000 satisfied learners spread across the globe. With this, we come to the end of this blog on the Java Dictionary Class. ("Check the value of removed key : " + edu.get("1000")) ("Keys in Dictionary : " + k.nextElement()) ("nThere is no key-value pair : " + edu.isEmpty() + "n") įor (Enumeration k = edu.keys() k.hasMoreElements() ) ("Value in Dictionary : " + i.nextElement()) Public abstract V remove(Object key) Implementation of Dictionary in Javaįor (Enumeration i = edu.elements() i.hasMoreElements() ) Remove(Object key) : (Object key) removes the key-value pair mapped with the key.
Removing key value from dictionary in Java Return true, if there is no key-value relation in the dictionary else return false. IsEmpty() : () checks whether the dictionary is empty or not. Public abstract V get(Object key) Check if dictionary is empty Get(Object key) : (Object key) returns the value that is mapped with the key in the dictionary Public abstract Enumeration elements() Get method to fetch the values mapped with the key Public abstract V put(K key, V value) Return values present in the dictionaryĮlements() : () returns value representation in dictionary Put(K key, V value) : (K key, V value) adds key-value pair to the dictionary Public abstract int size() Add/ put values in dictionary Size() : () returns the number of key-value pairs in the Dictionary Let us have a look at a few different methods of Dictionary Class. Public abstract class Dictionary extends Object Constructor:ĭictionary() constructor Methods of util.Dictionary Class You can store the value in a Dictionary object and once it is stored, you can retrieve it by using its key. Get method to fetch the values mapped with the keyĭictionary is an abstract class representing a key/value storage repository that operates like Map.Return values present in the dictionary.Below are the topics covered in this blog. In this blog, we will learn more about the Dictionary class in Java and get familiar with the different methods. Dictionary in Java is the abstract class that is the parent of any class which uses the key-value pair relationship.
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