Common subexpression can be extracted from 'switch'
Reports switch expressions and statements where every branch has a common subexpression, and the switch can be moved inside. This action shortens the code. In many cases, it's reasonable to extract the resulting switch expression to a separate variable or method.
Example:
switch (value) {
case 0 -> System.out.println("zero");
case 1 -> System.out.println("one");
case 2, 3, 4 -> System.out.println("few");
default -> System.out.println("many");
}After the quick-fix is applied:
System.out.println(switch (value) {
case 0 -> "zero";
case 1 -> "one";
case 2, 3, 4 -> "few";
default -> "many";
});- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
SwitchExpressionCanBePushedDown
This inspection is applicable only for enhanced switches with arrow syntax.
This inspection depends on the Java feature ''switch' expressions', which is available since Java 14.
New in 2022.3
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
//noinspection SwitchExpressionCanBePushedDownnote
Actual comment syntax will depend on the code language you are working with
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
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