BlueJ Program on Letter or Digit Checking in a sentence

import java.io.*;

class LetterCh

{

  BufferedReader br=new BufferedReader (new InputStreamReader(System.in));

int I,len,c=0;

char ch;

public void showLettersDigits () throws Exception

{

 System.out.print("\nEnter the sentence:");

String str=br.readLine();

str=str.trim();

len=str.length ();

for (i=0;i< len;i++)

{

ch= str.charAt(i);

if(Character.isLetterOrDigit(ch))

c++;

}

System.out.print(“Total number of Letters and Digits in the sentence=”+c);

}

public static void main(String args[])

{

LetterCh ob=new LetterCh ();

ob. showLettersDigits();

}

}

Related Post: Programs on Character Class