You can convert an array of Strings to a single array using the collect() method.ExampleLive Demoimport java.util.Arrays; import java.util.stream.Collectors; public class CreatngStringFromArray {    public static void main(String args[]) {       String [] myArray = {"Welcome", "to", "Tutorialspoint"};       String str = Arrays.stream(myArray).collect(Collectors.joining(" ")); ... Read More

Each variable in C++ has a specific type, which determines the size and layout of the variable's memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable. We declare a variable using the notation −type variableName;The ... Read More

You can define constants in C++ by adding the const qualifier before the declaration of the variable. Example#include using namespace std; int main() {    const int x = 9;    x = 0;    return 0; }This will define the constant variable x. But it will throw an error ... Read More

Auto and decltype serve different purposes so they don't map one-to-one. auto is a keyword in C++11 and later that is used for automatic type deduction. The decltype type specifier yields the type of a specified expression. Unlike auto that deduces types based on values being assigned to the variable, ... Read More

Suppose in our ‘Employee’ table we are having NULL as the value of ‘salary’ column for two employees. The data, shown as follows, is itself not meaningful.mysql> Select * from employee; +----+--------+--------+ | ID | Name   | Salary | +----+--------+--------+ | 1 | Gaurav  | 50000  | | 2 ... Read More

std::cerr is an object of class ostream that represents the standard error stream oriented to narrow characters (of type char). It corresponds to the C stream stderr. The standard error stream is a destination of characters determined by the environment. This destination may be shared by more than one standard ... Read More

There are several alternatives for compiling C++ on windows. Let's look at 2 of them:GCCTo install GCC on Windows you need to install MinGW. To install MinGW, go to the MinGW homepage, www.mingw.org, and follow the link to the MinGW download page. Download the latest version of the MinGW installation ... Read More

In the C++ programming language, the C++ Standard Library is a collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself. The C++ Standard Library provides several generic containers, functions to utilize and manipulate these containers, function objects, generic strings ... Read More

As we know that COALESCE() function returns first non-NULL value from the list of values. The following IF-THEN-ELSE statement is equivalent to COALESCE() function.IF value1 is not NULL THEN output = value1; ELSIF value2 is not NULL THEN output = value2; ELSIF value3 is not NULL THEN output = value3; ... Read More

JavaScript lang attributeThis attribute specifies what scripting language you are using. Typically, its value will be javascript. Although recent versions of HTML (and XHTML, its successor) have phased out the use of this attribute.JavaScript type attributeThis attribute is what is now recommended to indicate the scripting language in use and ... Read More