Use the built-in enumeration methods.

  

enum Apple {  
  A, B, C, D, E 
} 
 
public class EnumDemo2 { 
  public static void main(String args[])  
  { 
    Apple ap; 
 
    System.out.println("Here are all Apple constants"); 
 
    // use values() 
    Apple allapples[] = Apple.values(); 
    for(Apple a : allapples) 
      System.out.println(a); 
 
    System.out.println(); 
    
    // use valueOf() 
    ap = Apple.valueOf("A"); 
    System.out.println("ap contains " + ap); 
 
  } 
}

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Use the built-in enumeration methods. : Enum « Language Basics « Java

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