Determining If a String Is a Legal Java Identifier : Character « Data Type « Java

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Java » Data Type » Character Screenshots  Determining If a String Is a Legal Java Identifier      public class Main {   public static void main(String[] argv) throws Exception {     boolean b = isJavaIdentifier("my_var"); // true   }   public static boolean isJavaIdentifier(String s) {     if (s.length() == 0 || !Character.isJavaIdentifierStart(s.charAt(0))) {       return false;     }     for (int i = 1; i < s.length(); i++) {       if (!Character.isJavaIdentifierPart(s.charAt(i))) {         return false;       }     }     return true;   } }                       Related examples in the same category 1.  Java char: char is 16 bit type and used to represent Unicode characters. Range of char is 0 to 65,536. 2.  Character class creates primitives that wrap themselves around data items of the char data type 3.  Create Character objects and compare them 4.  Use Character.isLowerCase, Character.isUpperCase to check the letter case 5.  Use Character.isLetter to check if a char is a letter 6.  Count letters in a String 7.  Use Character.isDigit to check the if a char is a digit 8.  Validate if a String contains only numbers 9.  Check if a character representing a number 10.  Check if a character representing an alphabet 11.  If a character is uppercase 12.  if a character is lowercase 13.  Is character a digit, letter, white space, lower case or upper case character 14.  switch with char value 15.  Escape Sequence Characters 16.  Char is Int 17.  Convert from integer to ASCII code (byte) 18.  Plus one to char variable 19.  Store unicode in a char variable 20.  All static information about a character 21.  Compare Two Java char Arrays 22.  Convert from ASCII code to String 23.  Copy char array to string 24.  Convert to hex 25.  Determining a Character's Unicode Block 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