スイッチケースで定数式が必要です

Question

私の文字列の定数式は既に初期化されています。ここで問題と思われるものは何ですか？

エラーは「定数式が必要です」です。以下は

この

public class VatCalculator { 

    private static int ONBOARD_SALE =1; 
    private static int ONBOARD_SERVICE =2; 
    private static int PREORDER_SALE =3; 
    private static int PREORDER_SERVICE =4; 

    private static final Map<String, Integer> serviceMap = new HashMap<String, Integer>(); 
    static { 
     serviceMap.put("onboardSale", ONBOARD_SALE); 
     serviceMap.put("onboardService", ONBOARD_SERVICE); 
     serviceMap.put("preorderSale", PREORDER_SALE); 
     serviceMap.put("preorderService", PREORDER_SERVICE); 
    } 



public static double calculate(String serviceGroup) { 

int type = serviceMap.get(serviceGroup); 

switch(type) { 
//error at below line 
case ONBOARD_SALE: 
     //do something 

default:break; 
    } 
} 

Answer 1

使用、私のコードです：

private static final int ONBOARD_SALE = 1; 

Answer 2

チェックブレース

public class VatCalculator { 

     private static int ONBOARD_SALE =1; 
     private static int ONBOARD_SERVICE =2; 
     private static int PREORDER_SALE =3; 
     private static int PREORDER_SERVICE =4; 

     private static final Map<String, Integer> serviceMap = new HashMap<String, Integer>(); 
     static { 
      serviceMap.put("onboardSale", ONBOARD_SALE); 
      serviceMap.put("onboardService", ONBOARD_SERVICE); 
      serviceMap.put("preorderSale", PREORDER_SALE); 
      serviceMap.put("preorderService", PREORDER_SERVICE); 
     } 


    public static double calculate(String serviceGroup) { 

     int type = serviceMap.get(serviceGroup); 

     switch(type) { 
      //error at below line 
      case ONBOARD_SALE: 
        //do something 

      default:break; 
     } 
    } 
    } //<-- add like this brace