Can String be considered as a Keyword?

Keywords are important in any programming language, as they are reserved words with a particular predefined meaning. The keywords are used to define the variables, function, and class, change the program's control flow, traverse the list, etc.

When we talk about the 'String', it is a fundamental data type to represent a series of characters. Some programming languages refer to the 'String' as a class, and some programming languages refer to the 'String' as a keyword. In this tutorial, we will explore the use of the 'String' word in the programming language.

C/C++

The C or C++ programming languages are lower-level programming languages. The C++ programming language is known for its efficiency and performance.

The 'string' term doesn't exist in the c programming language, but the C++ language contains the 'string' term. In C++, the 'string' is not a keyword but a data type name, predefined in the standard library of C++. However, we can also change the 'string' term to represent the string with another name, but we can't change any keyword name, as they are reserved words.

Example

In the example below, we used the 'string' term, which is predefined in the 'std' library to define the string.

Also, we have printed the string in the output.

#include <iostream>

int main() {
   // Define the string
   std::string test = "How are you?";
   std::cout << test;

   return 0;
}

Output

How are you?

Java

Java is one of the most used object-oriented programming languages. Java also contains the 'String' term, but it is not a keyword. In Java, the 'String' refers to a predefined class containing various methods to manipulate the text data. We can use the class to define the object of the class to store the text data.

Example

In this example, we have defined the object of the class to store the text data, and in the output, we have printed the text data.

public class Main {
   public static void main(String[] args) {
      String test = "Welcome to the TutorialsPoint!";
      System.out.println(test);
   }
}

Output

Welcome to the TutorialsPoint!

Python

Python is a high-level object-oriented programming language. It is very easy to use and known for its simplicity. Python doesn't contain the predefined 'string' term. We can use the isKeyword() method of the 'keyword' library to check whether the particular term is a keyword.

Example

In the example below, we have imported the 'keyword' library. After that, we used the isKeyword() method to check whether the 'string' is a keyword in Python. In the output, we can observe that it prints that string is not a keyword in Python.

import keyword

if keyword.iskeyword("string"):
   print("string is python keyword")
else:
   print("string is not a python keyword")

Output

string is not a python keyword

JavaScript

JavaScript is a widely used programming language in web development. The JavaScript contains the 'let', 'var', and 'const' keywords to define the variables but doesn't contain the 'string' as a keyword or class name. In simple terms, JavaScript doesn't contain the 'string' term like Python.

Example

In this example, we have defined the string without using the 'string' term.

let test = "This is written in JavaScript!";
console.log(test);

Output

This is written in JavaScript!

C#

The C# is an object-oriented programming language widely used to develop a desktop application. The C# doesn't contain the 'String' as a keyword but the predefined string class, which we can use to manage the text data. As like Java, the string class of the C# contains the set of methods to manage the data.

Example

In this example, we have defined the string using the 'string' class name. Here, we have defined the object of the 'string' class with a particular value. Also, we have printed the string value in the output.

using System.IO;
using System;

class Program{
   static void Main(){
      string text = "Hello, World!";
      Console.WriteLine(text);
   }
}

Output

Hello, World!

Conclusion

The 'string' is not a keyword in any of the above 5 programming languages discussed. Python and JavaScript don't contain the 'string' term. Java and C# contain the 'string' term as a class name, and C++ contains the 'string' term as a predefined data type in the 'std' library.