BlueJ Program On Sentence To Count Frequency Of All Type Characters

This is a BlueJ program to accept a sentence and show the frequency of uppercase, lowercase, special characters and digits

Sample Input: Jamshedpur Mango Dimna Road:810012

Sample Output: No of uppercase characters: 4

No of lowercase characters: 20

No of special characters: 4

No of digits: 6

import java.util.Scanner;

class Star

{

String str1;

int i,len,c1,c2,c3,c4;

char ch;

Scanner sc=new Scanner(System.in);

public void read()

{

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

   str1=sc.nextLine();

len=str1.length();

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

{

  ch=str1.charAt(i);

  if(Character.isUpperCase(ch))

  c1++;

  else if(Character.isLowerCase(ch))

  c2++;

  else if(Character.isDigit(ch))

  c3++;

  else

  c4++;

}

  System.out.println("\nNo of Uppercase Characters: " + c1);

  System.out.println("\nNo of Lowercase Characters: " + c2);

  System.out.println("\nNo of Special Characters: " + c4);

  System.out.println("\nNo of Digits: " + c3);

}

public static void main(String args[])

{

 Star ob=new Star();

 ob.read();

  }

}

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