真实项目中Switch语句的高级写法

普通：

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public class Test {       public static void main(String[] args) {         String bussType = "01";         String bussinessType = "0000000";         Test test = new Test();         System.out.println(test.transfer(bussType, bussinessType));         }     private String transfer(String bussType,String bussinessType){         switch (bussType) {             case "01":                 bussinessType="000001";                 break;             case "02":                 System.out.println("000002");                 bussinessType="000002";                 break;             case "03":                 bussinessType="000003";                 break;             case "04":                 bussinessType="000004";                 break;             default:                 break;         }         return bussinessType;     } }

　　

高级写法：

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public class Test {       public static void main(String[] args) {         String bussType = "01";         String bussinessType = "0000000";         Test test = new Test();         System.out.println(test.transfer(bussType, bussinessType));         }     private String transfer(String bussType,String bussinessType){         switch (bussType) {             case "01":                 return "000001";             case "02":                 return "000002";             case "03":                 return "000003";             case "04":                 return "000004";         }         return bussinessType;     } }