在switch-case中使用枚举值的字符串表示 [英] Using string representations of enum values in switch-case
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问题描述
String参数;
switch(argument){
case MyEnum.VALUE1.toString()://这不等于VALUE1吗?
// something
break;
case MyEnum.VALUE2.toString():
// else else
break;
解决方案
您只能使用编译时已知的字符串。编译器无法确定该表达式的结果。
也许您可以尝试
String argument = ...
switch(MyEnum.valueOf(argument)){
case VALUE1:
case VALUE2:
Why is it not possible to use enum values as strings in a switch case? (Or what is wrong with this:)
String argument;
switch (argument) {
case MyEnum.VALUE1.toString(): // Isn't this equal to "VALUE1" ?
// something
break;
case MyEnum.VALUE2.toString():
// something else
break;
解决方案
You can only use strings which are known at compile time. The compiler cannot determine the result of that expression.
Perhaps you can try
String argument = ...
switch(MyEnum.valueOf(argument)) {
case VALUE1:
case VALUE2:
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