El mètode toString() de la classe Enum retorna el nom d'aquesta constant enum, tal com conté la declaració.

El mètode toString() es pot substituir, encara que no és essencial.

Sintaxi

 public String toString() 

Paràmetres

AIXÒ

Anul·lació:

El mètode toString() de la classe Enum anul·la el mètode toString() de la classe Object.

Valor de retorn

El mètode toString() retorna el nom d'aquesta constant d'enumeració.

Exemple 1

 enum Planets{ Mercury, Venus, Earth, Mars, Jupiter,Uranus, Neptune; } public class Enum_toStringMethodExample1 { public static void main(String[] args) { System.out.println('Seven Planets :'); for(Planets planets: Planets.values()){ int i = planets.ordinal()+1; System.out.println(i+' '+planets.toString()); } } } 

Sortida:

 Seven Planets : 1 Mercury 2 Venus 3 Earth 4 Mars 5 Jupiter 6 Uranus 7 Neptune 

Exemple 2

 import java.util.Scanner; public class Enum_toStringMethodExample2 { enum Position{ First ,Second,Third; } enum Prize{ Gold ,Silver,Bronze; } public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println('Enter your positon:'); String str =scanner.next(); for(Position pos : Position.values()){ int i = pos.ordinal(); //it will return the enum constant as String String str1 =pos.toString(); if(str.equals(str1)){ for(Prize prize: Prize.values()){ int j= prize.ordinal(); if(i==j){ System.out.println('Congratulation! You have won a '+prize+' medal.'); } } } } } } 

Sortida:

 Enter your positon: Second Congratulation! You have won a Silver medal. 

Exemple 3

 import java.util.Scanner; public class Enum_toStringMethodExample3 { enum Grade{ A ,B,C,D ,E; } public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println('Enter your grade'); String str = scanner.next(); String str1 =Grade.A.toString(); if(str.equals(str1)){ System.out.println('Excellent
You scored above 90'); } else if(str.equals(Grade.B.toString())){ System.out.println('Very good
You scored above 80 but below 90 '); } else if(str.equals(Grade.C.toString())){ System.out.println('Good
You scored above 70'); } else if(str.equals(Grade.D.toString())){ System.out.println('Fair
You scored aboved 50'); } else{ System.out.println('Word Hard
You failed!'); } } } 

Sortida:

 Enter your grade C Good You scored above 70