Count letters in a String : Character « Data Type « Java

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Java » Data Type » CharacterScreenshots 
Count letters in a String
     

public class Main {

  public static void main(String[] args) {
    String str = "12345";
    int counter = 0;
    for (int i = 0; i < str.length(); i++) {
      if (Character.isLetter(str.charAt(i)))
        counter++;
    }
    System.out.println(counter + " letters.");
  }
}
//0 letters.

   
    
    
    
    
  
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11.if a character is lowercase
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13.switch with char value
14.Escape Sequence Characters
15.Char is IntChar is Int
16.Convert from integer to ASCII code (byte)
17.Plus one to char variable
18.Store unicode in a char variable
19.All static information about a character
20.Compare Two Java char Arrays
21.Convert from ASCII code to String
22.Copy char array to string
23.Convert to hex
24.Determining a Character's Unicode Block
25.Determining If a String Is a Legal Java Identifier
26.Count the number of bytes included in the given char[].
27.Count the number of chars included in the given byte[].
28.Character array convert and find
29.StringBuffer based on char array
30.String based on char array
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