Java7 switch新特性

在Java7之前，switch只能匹配整数值，和字符；而Java7添加了字符串的匹配特性。

代码如下：

 package blog;

 public class Main {
     public static void show(String str) {
         switch (str) {
             case "people":
                 System.out.println("Input string is people");
                 break;
             case "school":
                 System.out.println("Input string is school");
                 break;
             case "bird":
                 System.out.println("Input string is bird");
                 break;
             default:
                 System.out.println("Others");
         }
     }

     public static void main(String[] args) {
         show("people");
         show("bird");
         show("dfkdf");
     }
 }