Java 14 has a new switch statement with syntax like case 0, 1 -> ... which can evaluate to an expression, execute a code block, or throw. – user904963 Commented Nov 24, 2021 at 22:17

Jul 19, 2012 · Condition matching is not allowed in java in switch statements. What you can do here is create an enum of your string literals, and using that enum create a helper function which returns the matched enum literal. Using that value of enum returned, you can easily apply switch case. For example:

Apr 25, 2010 · switch (someValue) { case extendedActionValue: // do extended action here, falls through to normal action case normalActionValue: case otherNormalActionValue: // do normal action here break; } Of course, it is easy to forget the break statement at the end of a case and cause unexpected behavior. Good compilers will warn you when you omit the ...

I don't think you can do that in Java. Best bet is to just put the code in the last case of the range. switch (num) { case 1: case 2: case 3: case 4: case 5: System.Out.Println("testing case 1 to 5"); break; case 6: case 7: case 8: case 9: case 10: System.Out.Println("testing case 6 …

Jan 11, 2011 · switch(type) { case GradeSystemType.System1To6: // do something case GradeSystemType.SystemAToD: // do something case GradeSystemType.System0To100: // do something } So if we extend the GradeSystemType by for example System1To3 the static code analysis tool should detect that there is no default clause and the switch statement is …

Oct 23, 2014 · Language: Java boolean x = false; String letter = "NULL"; do{ System.out.print("Enter grade (one character): "); letter = sc.next(); switch (letter) { case "a": x=true...

Jan 10, 2021 · Adding to existing answers: yield can also be used with -> and its main purpose is to allow the use of a block when a single expression is not sufficient for a given case: var test = switch (value) { case A -> 1; case B -> 2; case C -> { System.err.println("neither A nor B"); // or some calculation yield -1; } }

May 23, 2013 · You can also assign a value through the switch case expression : String text = switch (name) { case text1, text4 -> "hello" ; case text2, text3, text5 -> "world" ; default -> "goodbye"; }; "yield" keyword. It allows you to return a value by the switch case expression

Feb 23, 2011 · Just trying to figure out how to use many multiple cases for a Java switch statement. Here's an example of what I'm trying to do: switch (variable) { case 5..100: doSomething(); break; } versus having to do: switch (variable) { case 5: case 6: etc. case 100: doSomething(); break; }

Apr 20, 2012 · Simply because Java7+ code using switch over string compiles to code assuming exactly that invariant property. So it can’t change in future versions and it’s even simpler to see that the algorithm hasn’t changed from Java 1.0 to Java 7 either. But your code should use equals within the case statements to protect against hash collisions. –