Iterate /loop HashMap collection having string objects (Java8/ example)
1. What is HashMap collection in java? HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the […]
Insert elements to HashMap collection in java (example)
Given HashMap collection in java, Add/insert/put element/String objects to HashMap using put,putAll & putIfAbsent method (java/ example/class hierarchy)
Single responsibility design principle – Java & C++ (SOLID & example)
What is Single Responsibility Principle? Single Responsibility Principle is one of the five principles of SOLID acronym. Single Responsibility Principle
File read write IO operation in java – StringWriter/StringReader (example)
File read write IO operation in java using StringWriter & StringReader. StringWriter write contents as String & StringReader read file as String (example).
Write file in java using PrintWriter (class hierarchy & example)
PrintWriter writes the formatted data to output stream. PrintWriter provides the methods to write int, boolean, char, String, double, float
Read & Write file in java using CharArrayReader & CharArrayWriter (example)
Given the contents, we would like to create or write to file using CharArrayWriter class in java. Read contents from file
Interface segregation design principle in java (SOLID & real time example)
Interface segregation principle (ISP) is one of the five principles of SOLID acronym. Interface Segregation Principle states “Clients should not
STL Erase-Remove Idiom in C++ (with example)
In C++ programming paradigm, we extensively use the collection frameworks like STL, Its very common practice to remove element(s) from
Add, remove, retain, sort methods of linkedlist collection (java / example)
Given an LinkedList, we will demonstrate remove Add, Retain, Sort Iterate, Get, Contains & Clear methods of linkedlist using example.
Sort elements of linkedlist in java (ascending & descending order)
The LinkedList class extends AbstractSequentialList and implements the List interface. Given an LinkedList, we would like to sort elements of
Iterate or loop LinkedList collection of String objects in java (with example)
Linked list in java is a doubly-linked list. Insertion order is maintained in a linked list. LinkedList extends AbstractSequentialList class &
Retain & remove elements/ nodes of linkedlist collection (Java/ example)
Given a LinkedList collection in java, we would like retain certain elements or nodes of linkedlist. We would like to
Remove or delete nodes/String objects from LinkedList collection (java/ example)
Linked list in java is a doubly-linked list. Insertion order is maintained in a linked list. LinkedList extends AbstractSequentialList class &
Add or insert elements/nodes to linkedlist in java (example)
What is LinkedList Collection in Java? Linked list collection is a doubly-linked list. LinkedList extends AbstractSequentialList class & implements List, Deque,
Get, Add, Remove, Retain, Sort & iterate methods of arraylist collection (java/ example)
ArrayList class is resizable array implementation of the List interface. ArrayList maintains the insertion order of element or string objects.
Iterate or loop arraylist collection of String objects/elements in java (example)
ArrayList class is resizable array implementation of the List interface. ArrayList maintains the insertion order of element or string objects.
Retain or remove String objects/ elements of arraylist collection (java /example)
Given an arraylist collection of String objects in java. We would like to retain certain elements of arraylist (and would
Sort Objects in ArrayList collection in ascending & descending order
1. Sort Objects of ArrayList in ascending & descending order: Given an ArrayList collection of string objects in java. We
Add/ insert elements/String objects to arraylist collection (java/ example)
Given an arraylist collection, add or insert elements/Objects to arraylist collection. ArrayList class is resizable array implementation of the List
Remove or delete elements/nodes/objects from arraylist collection (java/example)
Given an arraylist containing string objects, we would like to remove or delete elements from arraylist collection. Arraylist has following
Read & write UTF file – BufferReader & BufferWriter (NIO & example)
Given the UTF contents, read & write utf contents using BufferReader & BufferWriter. Use java nio feature to create BufferReader & BufferWriter.
Read /write UTF contents to/ from file in java (BufferReader /BufferWriter /example)
Given UTF contents, read & write utf contents using BufferReader & BufferWriter in java. Write UTF contents to the file
InputStreamReader & OutputStreamWriter – UTF file (example)
Given the UTF contents, read & write utf contents using InputStreamReader & OutputStreamWriter. We have already discussed similar posts: Read & write UTF file
BufferedReader & BufferedWriter (NIO) – Read & write file (java/example)
Read & write file using BufferedReader/BufferedWriter (NIO) with example. BufferWriter writes to character stream & BufferReader, reads character stream.
Read write file using BufferedReader & BufferedWriter in java (example)
BufferWriter, writes to character based stream and BufferReader, reads from character based stream, so as to provide efficient writing/reading of
Read/write file contents in java (example/InputStreamReader/OutputStreamWriter)
Read & Write file in java using InputStreamReader & OutputStreamWriter class. We will write contents to a file using OutputStreamWriter
Read & write file in java (FileInputStream/ FileOutputStream/ example)
Create or write file in java using FileOutputStream class. FileOutputStream writes the contents to file as stream of bytes. The
Working of Filters & Interceptors in RESTFul web service (Jersey /example)
Request response flow in client server (REST Web service) We have shown the request response mechanism of service and client
Program – simulate or generate unchecked exceptions (java & examples)
1. What is unchecked exception in java? Unchecked exceptions are not checked at compiled time. The unchecked exceptions are not forced
Difference b/w checked & unchecked exception (class hierarchy & example)
Difference between checked and unchecked exceptions in java. Discuss the exception class hierarchy showing checked & unchecked exception in java.