BlueJ Program On String Using Scanner Class

program to enter a string using scanner and find out the number of words,spaces,letters,numbers and special characters in it.

import java.util.Scanner;

public class Scan

{

  public static void main(String[] args)

  {

    Scanner sc = new Scanner(System.in);

    String s1;

    int i,len,space=0,letter=0,digit=0,punc=0;

    char ch;

   System.out.println("Enter a sentence:");

    s1 = sc.nextLine();

    len=s1.length();

    for(i=0;i< len;i++)

    {

         ch=s1.charAt(i);

         if(ch==' ')

         space++;

         else if((ch>=65 && ch< =90) ||(ch>=97 && ch< =122))

         letter++;

         else if(ch>=48 && ch< =57)

         digit++;

         else

         punc++;

        }

       System.out.println("Number of Words in the sentence="+(space+1));

       System.out.println("Number of spaces in the sentence="+space);  

       System.out.println("Number of letters in the sentence="+letter);

       System.out.println("Number of digits="+digit);

       System.out.println("Number of punctuations="+punc);

    

    }

}

Sample input and output:

Enter a sentence:

This is our first test

Number of Words in the sentence=5

Number of spaces in the sentence=4

Number of letters in the sentence=18

Number of digits=0

Number of punctuations=0

Enter a sentence:

Address is: 14,circular road

Number of Words in the sentence=4

Number of spaces in the sentence=3

Number of letters in the sentence=21

Number of digits=2

Number of punctuations=2

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