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/**
* This used to work up to preview 3 (Java 19), but no longer in preview 4 (Java 20).
* Now, the default case seems to need to be the last one in the list.
*
* Javac says 4x: "this case label is dominated by a preceding case label"
*
* ECJ/AJC says 11x: "This case label is dominated by one of the preceding case label" (yes, "label" singular)
* See https://github.com/eclipse-jdt/eclipse.jdt.core/issues/919.
*/
public class SwitchPatternPreview4Error {
static void defaultCanAppearBeforePattern(Integer i) {
switch (i) {
case null -> System.out.println("value unavailable: " + i);
case -1, 1 -> System.out.println("absolute value 1: " + i);
default -> System.out.println("other integer: " + i);
case Integer value when value > 0 -> System.out.println("positive integer: " + i);
}
}
static void defaultCanAppearBeforeNull(Integer i) {
switch (i) {
case -1, 1 -> System.out.println("absolute value 1: " + i);
default -> System.out.println("other integer: " + i);
case null -> System.out.println("value unavailable: " + i);
case Integer value when value > 0 -> System.out.println("positive integer: " + i);
}
}
static void defaultCanAppearBeforeConstantLabel(Integer i) {
switch (i) {
case null -> System.out.println("value unavailable: " + i);
default -> System.out.println("other integer: " + i);
case -1, 1 -> System.out.println("absolute value 1: " + i);
case Integer value when value > 0 -> System.out.println("positive integer: " + i);
}
}
}
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