Collections classes are compared and explained in simple terms
When to prefer Vector vs ArrayList? By functionality, both are very similar. Both are derived from List interface. The most important difference is that Vector methods are synchronized where as ArrayList methods are not. In a multithreaded environment, when a number clients access same instance where data is very critical and important, it is advised …
Array and ArrayList Array and ArrayList are data structures but with lot of differences. Array Array is a collection of similar data types. The data stored is known as elements. Elements added are automatically indexed. The first element is given zero and the elements can be retrieved by their index numbers. Retrieving the elements is …
There comes two classes ArrayList and LinkedList to store objects. Internally, ArrayList stores elements as an array form and LinkedList stores elements in node form. Due to their internal style of storing the elements, they come with different performance heads depending the nature of action performed like addition and retrieval. Programs are available at ArrayList …
After studying Set, HashSet and TreeSet individually, let us summarize their differences. Now let us go with Set and HashSet. These two are very much related as HashSet is a class derived from Set interface. As a derived class of Set, the HashSet attains the properties of Set. Important and the most frequently used derived …
Given in simple terms with example codes in respective links. Start reading Differences between HashSet and HashMap. Both look something same but are very different in each respect. Following tables give you both differences and similarities. Two programs are given on HashSet and HashMap. Both belong to Collections framework. One difference of eye-catching is HashSet …
At the outset, both are similar in functionality (purpose) but for very small difference. Both store data in key/value pairs. There is nothing with HashMap that cannot be done with Hashtable. Following table gives the differences: Hashtable vs HashMap Hashtable HashMap Introduced with JDK 1.0 version, the starting version of Java Introduced with JDK 1.2 …
After studying Hashtable vs HashMap and HashMap vs TreeMap, let us study the differences between Map and HashMap. These two are very much related as HashMap is a class derived from Map interface. As a derived class of Map, the HashMap attains the properties of Map. Important and the most frequently used derived classes of …
After knowing Hashtable vs HashMap, now let us see the comparison of HashMap with TreeMap. Basically both are derived from Map interface and meant to store key/value pairs. But TreeMap inherits one more interface SortedMap and for this reason it attains the property of returning the elements in sorting order by default (irrespective of the …
Three most used implementations of Set interface are HashSet, TreeSet and LinkedHashSet. For a novice, it looks difficult to understand. When a list of differences is presented all at a single place, it is easier to understand. Start reading HashSet vs TreeSet Programs are available at HashSet Tutorial and TreeSet Tutorial. First let us see …
