Causing ORA errors in a program using JDBC. How can I find what's causing them?

So I'm building a java app to interface with the company's database. Whenever it causes an ORA error, it just prints something like the following to system output: ORA-00911: invalid character Is there some way I can see what's causing it? Maybe some SQL statement I can use to see the last 10 errors caused on a table or something? I have SQLDeveloper if that might be useful.