Question

1.The below code has some errors, correct the errors and post the working code.

Scanner console = new Scanner(System.in);

System.out.print("Type your name: ");

String name = console.nextString();

name = toUpperCase();

System.out.println(name + " has " + name.Length() + " letters");

Sample Ouptut:
Type your name: John
JOHN has 4 letters

   2. Write a code that it reads the user's first and last name (read in the entire line as a single string), then print the last name   followed by a comma and the first initial.

Sample output:

Type your name: John Smith

Smith, J.

Answer 1

Answer:

Question 1:

import java.util.*;
public class Test /* 'Test' class starts here */
{
   public static void main(String[] args) /* main() function starts here */

{
       Scanner console = new Scanner(System.in); /* 'console' object of type Scanner class is created */
       System.out.print("Type your name: "); /* displays the message on the screen */
       String name = console.nextLine(); /* nextLine() is used to read the string, and is stored in 'name' */
       name = name.toUpperCase();   /* toUpperCase() is used to convert each character of the string to uppercase */
       System.out.println(name + " has " + name.length() + " letters"); /* length() is used to find the length of the string */
   } /* End of main() */
} /* End of 'Test' class */

Output:

Question 2:

import java.util.*;
public class Test1   /* 'Test1' class starts here */
{
   public static void main(String[] args) /* main() function starts here */

{
       Scanner console = new Scanner(System.in); /* 'console' object of type Scanner class is created */
       System.out.print("Type your name: "); /* displays the message on the screen */
       String name = console.nextLine(); /* nextLine() is used to read the string, and is stored in 'name' */
       String[] tokens = name.split(" "); /* The string in 'name' is splitted at white space character and stored in 'tokens' array */
       System.out.println(tokens[1]+", "+tokens[0].charAt(0)+"."); /* tokens[1] will be 2nd word, tokens[0] is 1st word, charAt(0) is first character */
   } /* End of main() */
} /* End of Test1 */  

Output: