Overriding toString() to return a Token constant's value

 
enum Token {
  IDENTIFIER("ID"), INTEGER("INT"), LPAREN("("), RPAREN(")"), COMMA(",");
  private final String tokValue;

  Token(String tokValue) {
    this.tokValue = tokValue;
  }

  @Override
  public String toString() {
    return tokValue;
  }

}
public class Main{
  public static void main(String[] args) {
    for (int i = 0; i < Token.values().length; i++){
      System.out.println(Token.values()[i].name() + " = " + Token.values()[i]);      
    }

  }

}
  


IDENTIFIER = ID
INTEGER = INT
LPAREN = (
RPAREN = )
COMMA = ,
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enum:
  1. enum type
  2. values( ) and valueOf( ) Methods
  3. enum as Class
  4. enum type Inherit Enum
  5. Overriding toString() to return a Token constant's value
  6. Assign a different behavior to each constant.