Using the instanceof Keyword

If you need to verify at runtime whether an object is actually an instance of a particular class, use the instanceof keyword. The instanceof keyword can only be used to verify if the target type in the expression on the right of the keyword is a viable alternative for the declared type of the expression on the left.

1If (Reports.get(0) instanceof CustomReport) {
2    // Can safely cast it back to a custom report object
3   CustomReport c = (CustomReport) Reports.get(0);
4   } Else {
5   // Do something with the non-custom-report.
6}