To use the Scanner class, create an object of the class and use any of the available methods found in the Scanner class documentation. In our example, we will use the nextLine() method, which is used to read Strings: If you don't know what a …

Apr 12, 2014 · you should read the input from your scanner as String type and the try to convert that String input into integer using Integer.parseInt(). If its successful in parsing, it means user has input an Integer.

Oct 2, 2013 · sc.nextLong() method will accept the long value and then sc.nextLine() will wait for input on the same line. And if you press enter after entering the long value, sc.nextLine() will simply read empty.

May 15, 2018 · I would like to make a function that can accept any incoming variable, regardless of type (int, double, String or other objects), and then possibly determine the type of variable and act conditionally on the type.

Nov 3, 2024 · To take string input in Java, we can use the java.util.Scanner class that provides methods to read input from various sources, including the standard input (keyboard) and files. We can also use the BufferedReader class or Command Line Arguments.

Oct 16, 2020 · Given a string, the task is to find its corresponding datatype using regular expression in java. We can broadly classify all data types into following types: Integer: Numeric datatypes like byte, short, int, long take the form of an Integer object. Double: Decimal datatypes like float and double take the form of Double object.

Feb 10, 2025 · There are two ways by which we can take or accept input in Java from the user or from a file. BufferedReader Class. BufferedReader is a subclass of Reader class that is used to read a sequence of characters. It provides a readLine () method to read an array of characters, strings, and text lines.

Apr 22, 2025 · Java Data Types Java is statically typed and also a strongly typed language because each type of data (such as integer, character, hexadecimal, packed decimal, and so forth) is predefined as part of the programming language and all constants or variables defined for a given program must be declared with the specifi ... In Java, a String is the ...

Jun 9, 2024 · In this tutorial, we will learn how to take String input in Java. There are two ways you can take string as an input from user, using Scanner class and using BufferedReader. However most common way is using Scanner class.

There are mainly five different ways to take input from user in java using keyboard. 1. Command Line Arguments. 2. BufferedReader and InputStreamReader Class. 3. DataInputStream Class. 4. Console Class. 5. Scanner Class. Below I have shared example for each of them. It is one of the simplest way to read values from user.