How do you read a Scanner in Java?

How do you read a Scanner in Java?

Example of nextLine() method

1. import java.util.*;
2. class UserInputDemo1.
3. {
4. public static void main(String[] args)
5. {
6. Scanner sc= new Scanner(System.in); //System.in is a standard input stream.
7. System.out.print(“Enter a string: “);
8. String str= sc.nextLine(); //reads string.

How do I read a Scanner string?

To read strings, we use nextLine(). To read a single character, we use next(). charAt(0). next() function returns the next token/word in the input as a string and charAt(0) function returns the first character in that string.

How do you read a command-line argument in Java?

To run this java program, you must pass at least one argument from the command prompt.

1. class CommandLineExample{
2. public static void main(String args[]){
3. System.out.println(“Your first argument is: “+args[0]);
4. }
5. }

How do you read a Scanner value?

Example 1

1. import java.util.*;
2. public class ScannerExample {
3. public static void main(String args[]){
4. Scanner in = new Scanner(System.in);
5. System.out.print(“Enter your name: “);
6. String name = in.nextLine();
7. System.out.println(“Name is: ” + name);
8. in.close();

How do I scan a word in Java?

Scanner scan = new Scanner(System.in); String input = scan. nextLine(); String [] splitted = input. split(“\\s+”); The output will be a string separated into words.

How do you read a double in Java?

Example 4

1. import java.util.*;
2. public class ScannerNextDoubleExample4 {
3. public static void main(String args[]){
4. double value;
5. Scanner scan = new Scanner(System.in);
6. System.out.print(“Enter the numeric value : “);
7. value = scan.nextDouble();
8. System.out.println(“Double value : ” + value +” \nTwice value : ” + 2.0*value );

How do you read a line with a space in Java?

Using readline() method of BufferedReader and Scan the whole string. Split this String for str. split(” “)…Procedure:

1. Using the nextInt() method of Scanner class and scan to scan the input.
2. Using for loop to store input in an array.
3. Iterate through the above array and parse each integer using sc. nextInt()

What is the command-line in Java?

Java 8Object Oriented ProgrammingProgramming. A command-line argument is an information that directly follows the program’s name on the command line when it is executed. To access the command-line arguments inside a Java program is quite easy. They are stored as strings in the String array passed to main( ).

How do I scan an int in Java?

To read integers from console, use Scanner class. Scanner myInput = new Scanner( System.in ); Allow a use to add an integer using the nextInt() method. System.

How do I scan a double in Java?