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
Programming Articles
Page 1616 of 2547
When to use the readAllBytes() method of InputStream in Java 9?
In this article, we will learn to use the readAllBytes() method of InputStream in Java 9. We will get to know the readAllBytes() method with its syntax, then we will learn about the InputStream Class with its methods, and lastly, we will learn the use of readAllBytes() with an example What is the readAllBytes() Method? In Java 9, the readAllBytes() method reads all bytes from an InputStream object at once and blocks until all remaining bytes have been read and the end of the stream is detected, or an exception is thrown. It returns a byte array containing the ...
Read MoreHow to get dates using LocalDate.datesUntil() method in Java 9?
In this article, we will learn to get dates using the LocalDate.datesUntil() method in Java 9. We will learn about date ranges, skip or limit results and by using the Period class we will apply the custom steps. What is a LocalDate? LocalDate is a part of java.time package and is an immutable, date-time object, which often represents a date in the "year-month-day" format. For example, the value of "2nd May 2025" could be stored in a LocalDate. The following are the maximum and minimum values of the LocalDate: MAX: The maximum supported LocalDate, '+999999999-12-31'. ...
Read MoreHow to get all children of a process using Process API in Java 9?
In this article, we will learn to get all children of a process using Process API in Java 9. First, we will learn about Process API and its methods, ProcessHandle interface and after that we will use the children method of the ProcessHandle interface. Process API In Java, the Process API, we can perform any operation regarding a process. The Process class provides methods for performing input on the processes, performing output to the processes, waiting for the process to complete, finding child and parent processes of the currently running process, getting any information about a process, and destroying the process. The ...
Read MoreHow to append text to a text file in C++?
Appending text means adding new content to an existing file without removing its current content. In C++, this can be done by opening the file in append mode and writing the specified content to it. Steps to Append Text to a Text File You need to follow the below steps to open a file in append mode and append the content to it: First of all, you need to include the header file. Them, create an ofstream object to write to the file. Open the file in append mode using the ios::app flag. Use the
Read MoreWhat is the difference between a definition and a declaration in C++?
In C++, declaration and definition are often confused. A declaration tells the compiler about the name and type, while a definition allocates memory or provides implementation. In this article, we will understand their differences with examples. What is a Declaration in C++? A declaration means (in C or C++) that you are telling the compiler about type, size and in case of function declaration, type and size of its parameters of any variable, or user-defined type or function in your program. No space is reserved in memory for any variable in case of the declaration. Following is the syntax to ...
Read MoreCount distinct elements in an array in C++
In this article, we have an unsorted array of integers having repetitive elements. Our task is to count the distinct elements in the given array in C++. Example Here is an example of counting the unique number in the given array: Input: array = {4, 2, 32, 26, 57, 52, 40, 2, 57, 40, 33} Output: Distinct elements in the array: 8 Here is a list of approaches for counting distinct elements in the given array: Using Nested for Loop Using Sorting ...
Read MoreC++ Program to Demonstrate the Implementation of 4-Color Problem
In this article, we will explain the 4 color problem to color a graph and implement the backtracking algorithm to solve it in C++. The 4 Color Problem The 4-color problem states that the maximum number of colors needed to color any planar graph (or a 2D map) is four, such that no two adjacent nodes have the same color. For example, suppose that you want to color a world map, such that no two countries sharing a border have the same color. According to this theorem, the maximum number of colors needed to do this is four. Now, ...
Read MoreA Sum Array Puzzle in C++?
In this article, we will solve a sum array puzzle, where we have an array with n elements. We have to create another array of n elements such that the 'ith' position of the second array will hold the sum of all elements of the first array except the 'ith' element. We have one constraint, we cannot use the subtraction operator in this problem. Example Here is an example of calculating the sum of array elements except for the ith element: Input: arr[] = {5, 6, 7, 8} Output: res[] = ...
Read MoreHow to get the IP Address of local computer using C/C++?
In this article, we will see how to get the Host name and IP address of the local system in an easier way using C and C++ program. Getting IP Address of Local Computer For this, some standard networking functions are available in socket programming with header files like on Windows and , , on Linux. In this article we will mainly discuss three commonly used functions: Sr.No ...
Read MoreWhat is the use of the Optional.stream() method in Java 9?
In this article, we will learn about the use of the Optional.stream() method in Java 9. First, we will learn about the optional class and its method. Then we will see the use cases along with an example.Optional class The Optional class was introduced in Java 8 to reduce the null pointer exception that occurs in Java. It is basically a container for the actual object that needs to be returned by a method. The point here is that if a method returns a null value, which can be null, then that method could return a value instead contained inside ...
Read More