Something about enum in Java
【摘要】 Here is a CA enum class:
public enum CA{
HH,BB,DD;
public String getString(){
switch(this){ case HH:return "HH hello"; case BB:return "BB hello"; case DD:return "DD hello"; default:...
Here is a CA enum class:
public enum CA{
HH,BB,DD;
public String getString(){
switch(this){ case HH:return "HH hello"; case BB:return "BB hello"; case DD:return "DD hello"; default:return "Hello world" }
}
}
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We have another class B:
public class B{
public CA yc;
}
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I want to show some usages of enum class:
String jsonS = "{"+"\"yc\":\"DD\""+"}";
B b = new Gson().fromJson(jsonS,B.class);
System.out.println(b.getStrting());
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The output is the following:
DD hello
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We can use the String enum to initialize the enum object:
CA bb = CA.valueOf("BB");
System.out.println(bb.getString());
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the result:
BB hello
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The enum class is like a normal class. It can has behaviors as the normal class own.
文章来源: blog.csdn.net,作者:WongKyunban,版权归原作者所有,如需转载,请联系作者。
原文链接:blog.csdn.net/weixin_40763897/article/details/114467005
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