Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Java Articles
Page 179 of 450
Break or return from Java 8 stream forEach?
Stream API was introduced by Java 8 for processing collections of data by a powerful and expressive way. One common question that arises when using streams is: What do I need to do to break out of, or return from, a forEach operation? In traditional loops you can break or return early. But the forEach method in streams doesn’t make this easy. This article examines why this is the case and examines alternate ways for early termination in the stream processing system.Read More: Java Stream API Improvements. Understanding Stream forEach ...
Read MoreJava program to sort string stream with reversed comparator
In this article, we will learn how to sort a stream of strings using a reversed comparator in Java. Java 8 introduced the Stream API, which allows powerful operations like sorting using custom comparators. Java Comparator A Comparator is a functional interface in Java that defines custom sorting logic. It compares two objects and returns a result based on the comparison. Java Stream A Stream is a sequence of elements that can be processed in parallel or sequentially, supporting methods like sorting, filtering, and mapping. Sorting string stream with a reversed comparator The following are the steps for sorting a ...
Read MoreJava Program to Represent Linear Equations in Matrix Form
In this segment of Java programming, we are going to learn and discover certain programs by which we can represent linear equations in Matrix form. To do these programs, we first have to learn about linear equations and Matrix forms, their types, and how they are solved by simple mathematical methods. We will learn how to integrate a scanner class of java.util package to take input from the user using Java build code. The array will initialize to store some variables as input for the problem matrix. Then, it will be converted into a loop by which the problem equation will ...
Read MoreJava program to remove duplicate elements from a List
In this article, we will learn to remove duplicate elements from a List in Java. We will be using two methods: LinkedHashSet and the Stream API. First, we'll create a list with duplicate values and use LinkedHashSet to remove them while maintaining the order. Then, we’ll use the Stream API to filter out duplicates using distinct(). By the end, you’ll see how both methods work to clean up the list while keeping the original order. List in Java The List interface in Java, part of the Collection framework, represents an ordered collection of elements that allows duplicates and provides index-based ...
Read MoreJava program to merge contents of all the files in a directory
In this article, we will learn how to merge the contents of all the text files in a directory into a single file using Java. It reads the data from each file and writes it into a new file while ensuring all data is stored in an organized manner. You’ll see how to handle files, read their content, and merge them programmatically. File class The java.io package contains the Java File class, which provides an abstract representation of file and directory pathnames. It is commonly used for creating files and directories, searching for files, deleting files, and performing other file-related operations. File ...
Read MoreJava program to add and remove elements from a set which maintains the insertion order
In this article, we will learn how to use a LinkedHashSet in Java to add and remove elements while maintaining the insertion order. You will see how elements are stored, removed, and updated in a LinkedHashSet without altering the sequence in which they were added. Problem Statement Write a Java program to add elements to a LinkedHashSet, remove specific elements, and display the updated set while ensuring the insertion order of the elements remains unchanged. Below is a demonstration of the same − Input Set = [20, 60, 80, 120, 150, 200, 220, 260, 380] Output Set = [20, 60, ...
Read MoreJava Program for Common Divisors of Two Numbers
In this article, we will learn to find the common divisors of two numbers using Java. The program will use a recursive method to calculate the greatest common divisor (GCD) of the two numbers, and then determine how many divisors are shared by both numbers. The output will display the total number of common divisors. Problem Statement Write a Java program to find and count the common divisors of two given numbers. Below is a demonstration of the same − Input val_1= 68 val_2= 34 Output The common divisors between the two numbers is4 Steps to find the common divisors ...
Read MoreJava program to print a Fibonacci series
The Fibonacci Series generates subsequent numbers by adding two previous numbers. The Fibonacci series starts from two numbers − F0 & F1. The initial values of F0 & F1 can be taken as 0, 1, or 1, 1 respectively. Fn = Fn-1 + Fn-2 Problem Statement Write a program in Java program to print a Fibonacci series. Input Run the program Output 1 1 2 3 5 8 13 21 34 55 The above output is obtained when the values of n=10. Different approaches to print a Fibonacci series Following are the different approaches to printing a Fibonacci series − ...
Read MoreJava program to show inherited constructor calls parent constructor by default
In this article, we will learn about constructors in Java. Constructors initialize objects when they are created. We will also see how the parent constructor is called in inheritance. Problem StatementWe will demonstrate possible approaches to show how the inherited constructor calls the parent constructor by default.Different approaches The following are the different approaches to show how the inherited constructor calls the parent constructor by default− Demonstrating inheritance properties ...
Read MoreJava program to get the current value of the system timer in nanoseconds
In this article, we use the System.nanoTime() method in Java to get the current value of the system timer in nanoseconds. It returns the current value of the most precise available system timer, in nanoseconds. Problem StatementGiven that you need to get the current value of the system timer in nanoseconds, write a Java program that retrieves this value using the System.nanoTime() method.Input There is no specific input as the program retrieves the system's current time in nanoseconds directly.Output Current Value: 49908709882168 nanoseconds Steps to get the current value of the system timer in nanosecondsThe following are the ...
Read More