import java.time.*;

public class Test2 {

    public static boolean swStmt(int X) {
        boolean Res = false;
        System.out.print("Switch statement ... ");
        switch(X) {
          case 1,2,3,  // multiple cases can be combined
       // no 4,
          5,6             -> Res = true;
                       // Control transfers to the end of the switch block.
          case 7,8             -> Res = false;
        };
          return Res;
    }

public static boolean swExpr(int X) {
    System.out.print("Switch expression ... ");
    return switch(X) {
    case 1,2,3,  // multiple cases can be combined
        // no 4,
       5,6             -> true;
                    // Control transfers to the end of the switch block.
       case 7,8             -> false;
       default				-> true;
     };
}

public static void main(String[] args) {
    int Failvalue = 4;
    int Goodvalue = 5;
    System.out.println("int completeness ... ");
    try { swExpr(Failvalue);System.out.println("checked statically "); }
    catch (Exception E) { System.out.println("raised " + E.getClass().getName()); }
    try { swStmt(Goodvalue); System.out.println("no run-time completness check!"); }
    catch (Exception E) { System.out.println("raised " + E.getClass().getName());}
    try { swStmt(Failvalue); System.out.println("FALL THRU!!!"); }
    catch (Exception E) { System.out.println("raised " + E.getClass().getName());}
    }
}