Java - Medium Articles

Paytm Interview Experience | Set 28 (For Software Developer)

Round 1: The first round was a coding round with 2 questions on mettl: Write a program to find sum of first largest k elements from… Read More

Experiences

Interview Experiences

Java

Starting with first Servlet Application

To get started with Servlets, let’s first start with a simple Servlet application i.e LifeCycle application, that will demonstrate the implementation of the init(), service()… Read More

java-servlet

Java

Reading a CSV file in Java using OpenCSV

A Comma-Separated Values (CSV) file is just a normal plain-text file, store data in column by column, and split it by a separator (e.g normally… Read More

Java

Java Swing | Simple Calculator

Java Swing is a GUI (graphical user Interface) widget toolkit for Java. Java Swing is a part of Oracle’s Java foundation classes . Java Swing… Read More

java-swing

Java

Servlet Collaboration In Java Using RequestDispatcher and HttpServletResponse

What is Servlet Collaboration? The exchange of information among servlets of a particular Java web application is known as Servlet Collaboration. This enables passing/sharing information… Read More

java-servlet

Java

Find all palindromic sub-strings of a given string | Set 2

Given a string, the task is to find all the palindromic sub-strings from the given string.In Set – 1, another approach has been already discussed… Read More

Algorithms

Competitive Programming

CS - Placements

DSA

Java

Java Programs

Misc

Strings

Java Robot Class | Get the pixel Color of a given point

Robot is part of java.awt package . Robot class is basically used to generate native system input events for the purposes of self- running demos,… Read More

Java

Programming Language

MouseListener and MouseMotionListener in Java

MouseListener and MouseMotionListener is an interface in java.awt.event package . Mouse events are of two types. MouseListener handles the events when the mouse is not in… Read More

Java

Java Programs

Misc

Java Swing | Look and Feel

Swing is GUI Widget Toolkit for Java. It is an API for providing Graphical User Interface to Java Programs. Unlike AWT, Swing components are written… Read More

Java

Java Swing | JFileChooser

JFileChooser is a part of java Swing package. The java Swing package is part of JavaTM Foundation Classes(JFC) . JFC contains many features that help… Read More

Java

Programming Language

Private Methods in Java 9 Interfaces

Java 9 onwards, you can include private methods in interfaces. Before Java 9 it was not possible. Interfaces till Java 7 In Java SE 7… Read More

java-interfaces

Java

Technical Scripter

Message Dialogs in Java (GUI)

Message dialogs provide information to the user. Message dialogs are created with the JOptionPane.showMessageDialog() method. We call the static showMessageDialog() method of the JOptionPane class… Read More

Java

Callback using Interfaces in Java

Callback in C/C++ : The mechanism of calling a function from another function is called “callback”. Memory address of a function is represented as ‘function… Read More

java-interfaces

Java

New Date-Time API in Java 8

New date-time API is introduced in Java 8 to overcome the following drawbacks of old date-time API : Not thread safe : Unlike old java.util.Date… Read More

Java-Date-Time

Java

Technical Scripter

IntStream sum() in Java

IntStream sum() returns the sum of elements in this stream. This is a special case of a reduction. IntStream sum() is a terminal operation i.e,… Read More

Java - util package

Java-Functions

java-intstream

java-stream

Java

Misc

IntStream range() in Java

IntStream range(int startInclusive, int endExclusive) returns a sequential ordered IntStream from startInclusive (inclusive) to endExclusive (exclusive) by an incremental step of 1. Syntax : static… Read More

Java - util package

Java-Functions

java-intstream

java-stream

Java

Misc

IntStream iterator() in Java

IntStream iterator() returns an iterator for the elements of this stream. It is a terminal operation i.e, it may traverse the stream to produce a… Read More

Java - util package

java-intstream

java-stream

Java

Misc

Convert Stream to Set in Java

Below given are some methods which can be used to convert Stream to Set in Java. Method 1 : Using Collectors Stream collect() method takes… Read More

Java - util package

Java-Collections

java-hashset

java-set

Java-Set-Programs

java-stream

Java-Stream-programs

Java

Misc

Sum of list with stream filter in Java

We generally iterate through the list when adding integers in a range, but java.util.stream.Stream has a sum() method that when used with filter() gives the… Read More

Java-ArrayList

java-list

Java-List-Programs

java-stream

Java-Stream-programs

Java

Stream mapToInt() in Java with examples

Stream mapToInt(ToIntFunction mapper) returns an IntStream consisting of the results of applying the given function to the elements of this stream. Stream mapToInt(ToIntFunction mapper) is… Read More

Java - util package

Java-Functions

java-stream

Java-Stream interface

Java

Misc

Technical Scripter