Metoda toString() klase Enum vraća naziv ove enum konstante, kako sadrži deklaracija.
Metoda toString() može se nadjačati, iako nije neophodna.
Sintaksa
public String toString()
Parametri
DA
Nadjačaj:
Metoda toString() klase Enum nadjačava metodu toString() klase Object.
Povratna vrijednost
Metoda toString() vraća naziv ove enum konstante.
Primjer 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()); } } }Testirajte sada
Izlaz:
Seven Planets : 1 Mercury 2 Venus 3 Earth 4 Mars 5 Jupiter 6 Uranus 7 Neptune
Primjer 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.'); } } } } } }
Izlaz:
Enter your positon: Second Congratulation! You have won a Silver medal.
Primjer 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!'); } } }
Izlaz:
Enter your grade C Good You scored above 70