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

1. Java
2. Data Type
3. Character

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;
  }
}

   
    
    
    
  

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