Java JDK 1.0 Legacy data structures explained in simple terms
A data structure (DS) can be termed as a storage box of data, or to say, a collection of elements. To the storage, further elements can be added, existing elements can be retrieved, deleted or replaced or can be copied to another DS. In Java, a data structure is a class (just like any other …
After knowing the meaning and purpose of Collections framework, let us know the basic interfaces, derived classes and their properties. Java data structures are nothing but subclasses of Collection and Map interfaces. Following hierarchy gives all the interfaces of Collections framework. Fig: Basic interfaces of collections framework Map and SortedMap form a separate hierarchy and …
Java Interface Collection Summary: Java Interface Collection is the super most interface from which almost all DS are derived. Explained the API in simple terms for a very beginner. Collection interface forms the base from which many data structures (almost all) are derived. The data structures derived from Collection interface are known as collections framework. …
Java Stack Program Summary: By the end of this tutorial "Java Stack Program", you will understand stack in Java. Very comfortable with the explaination and code examples. Stack, in any language, stores elements in LIFO (Last-in First-out) order. As the name indicates, in LIFO, the last added element is retrieved first. It can be imagined …
Java Generics Stack Example: The following program creates generics stacks storing all ints, doubles, chars and strings. Java 5 enhanced for loop is used to print the elements. Two Java Generics Stack Examples are given on Java Generics Stack. First one is general stack storing any data types. The methods push, peek, pop, size etc. …
Java Vector Methods Summary: The most used DS is Vector. Developer is required thorough with all the Java Vector Methods. Be comfortable to go through the tutorial. class Vector Vector internally is a array-based data structure (linked list is node-based) and grows dynamically when more elements are . Usage of Vector Constructors – Internal mechanism …
Java Vector Generics Example: About class Vector, its constructors and methods are explained very elaborately in the first program (and is advised to read before this program) Vector – Methods. Four Java Vector Generics Examples are given on Vector to know thoroughly about Vector, methods and usage. Vector is a general purpose data structure used …
Java Vector Example: About class Vector, its constructors and methods are explained very elaborately in the first program (and is advised to read before this program) Vector Methods. Four Java Vector Examples given to know thoroughly about Vector and above methods. Vector is a general purpose data structure user very often by the programmer even …
Four programs are given on Vector to know thoroughly about Vector, methods and usage. Vector is a general purpose data structure used very often by the programmer even though the collections framework comes with many classes. Vector – Methods: Uses all the methods of Vector class like capacity, size, firstElement etc. Generics Vector: Create generics …
Java Hashtable Tutorial Summary: By the end of this "Java Hashtable Tutorial", you will understand the API methods. class Hashtable Elements in Stack and Vector are single entities. Hashtable is very different. It stores in pairs of words known as key/value pair. To store a value, a key is to be supplied. Using the key, …
Java Hashtable Program Summary: By the end of this tutorial "Java Hashtable Program", you will comfortable to write a program. Explained in simple terms with screenshot. Three Java Hashtable Programs are given. HashtableGeneral: Uses the methods like elements, containsKey, put, get, contains and keys. Hashtable Generics: Creates generics Hashtable storing strings and integers and uses …
Three programs are given on Hashtable. Hashtable General: Uses the methods like elements, containsKey, put, get, contains and keys. Hashtable Generics: Creates generics Hashtable storing strings and integers and uses the methods like keySet, values, hashCode, putAll, clear, size, iterator, remove and isempty etc. Hashtable Special: Uses the methods like clone(), hashCode() and the values …
Three programs are given on Hashtable. Hashtable General: Uses the methods like elements, containsKey, put, get, contains and keys. Hashtable Generics: Creates generics Hashtable storing strings and integers and uses the methods like keySet, values, hashCode, putAll, clear, size, iterator, remove and isempty etc. Hashtable Special: Uses the methods like clone(), hashCode() and the values …
We know earlier Hashtable stores key/value pairs. There exists one more similar data structure that stores key/value pairs – Properties. Infact, Properties is derived from Hashtable. They differ very slightly. The key/value pair in Hasahtable can be objects of any Java class. But incase of Properties, the key/value pair should be strings only. Following is …
