In this problem, we need to write a java program to count the number of characters in a String.
The input string can also include blank space which is definitely not any type of character, hence we do need to count those.
Steps to Count Characters in a String in Java
- Take input a string (str).
- Run a loop from 0 to str.length().
- Read the character at position ‘i’ using str.charAt(i) into (ch).
- If (ch) blank space then increment counter (c++).
- Print the value of (c) after loop ends.
Count characters in a String or Sentence in Java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | import java.util.Scanner; public class CountCharacters { public static void main(String args[]){ Scanner in = new Scanner(System.in); String str; //To store string char ch; //To store a single character int c=0; //counter System.out.println("Enter a String/Sentence"); str = in.nextLine(); //Loop through each character for(int i=0; i<str.length(); i++){ ch = str.charAt(i); //Read character at 'i' if(ch != ' ') c++; //If the character is not blank space increment 'c' } System.out.println("Total characters: "+c); } } |
Note: To take sentence as input use nextLine() instead of next().
Output
1 2 3 4 5 6 7 | Enter a String/Sentence pencil programmer Total characters: 16 Enter a String/Sentence pencil programmer Total characters: 16 |
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