【代码积累】Enum

public class Test {public void test() {String currentType = ConnectionType.Zondy.getType();System.out.println("ConnectionType = "+currentType);}public enum ConnectionType {/*These are public static final field*/Zondy("Zondy"),   Shjw("Shjw"),Tn("Tn");/*上述的定义，相当于： * public enum ConnectionType { * Zondy,Shjw,Tn * } *  * 大致等同于： * public class ConnectionType { *  public static final int Zondy = 0; *  public static final int Shjw = 1; *  public static final int Tn =2; * } *  * 如果需要给枚举的实例添加附加信息，需要先列出所有的枚举实例，并以‘;’表示结束，然后定义private 构造函数，没错，必须是private的构造函数，因为 * 是在枚举类内部调用，此外用户也可以定义public属性的通用接口。*/private String type = null;/*Constructor --- must be private*/private ConnectionType(String type) {this.type = type;}/*Normal methods*/public String getType() {return type;}}}