枚举,用于开关盒 [英] Enums,use in switch case
问题描述
我有一个Enum定义,它包含方法返回类型,如String,Float,List,Double等。
I have an Enum defined which contains method return type like "String",Float,List,Double etc.
我将在switch case语句中使用它。
例如我的枚举是
I will be using it in switch case statements. For example my enum is
public enum MethodType {
DOUBLE,LIST,STRING,ARRAYLIST,FLOAT,LONG;
}
在属性文件中,我有如下的键值对。
Test1 = String
Test2 = Double
In a property file, I've key value pairs as follows. Test1=String Test2=Double
在我的代码中,我得到了密钥的值。我需要在Switch Case中使用VALUE来确定类型,并基于此我要实现一些逻辑。
例如类似这样的事情
In my code I'm getting the value for the key. I need to use the VALUE in Switch Case to Determine the Type and based on that I've to implement some logic. For example something like this
switch(MethodType.DOUBLE){
case DOUBLE:
//Dobule logic
}
有人可以帮我实现吗?
推荐答案
我想这就是你要找的东西:
I guess this is what you are looking for:
public class C_EnumTest {
public enum MethodType {
DOUBLE,LIST,STRING,ARRAYLIST,FLOAT,LONG;
}
public static void main( String[] args ) {
String value = "DOUBLE";
switch( MethodType.valueOf( value ) ) {
case DOUBLE:
System.out.println( "It's a double" );
break;
case LIST:
System.out.println( "It's a list" );
break;
}
}
}
因为不区分大小写你可以做 MethodType.valueOf(value.toUpperCase())
。
For not being case sensitive you could do a MethodType.valueOf( value.toUpperCase() )
.
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