try-catch statement provides a way to catch exceptions and
The simplest form of the statement is:
try stmt catch compound_stmt
where stmt is any statement and compound_stmt is a compound statement. First, stmt is executed. If during its execution an exception is raised, then compound_stmt is executed.
The second form of the statement allows you to catch just one type of exception:
try stmt catch if exp compound_stmt
where exp is an expression that should evaluate to an
Exception. The handler compound_stmt will only be
executed if that specific exception is caught. Any other exception
will be re-raised.
The third form of the statement is the most generic:
try stmt catch (Exception formal) compound_stmt
where formal is a formal argument that contains the exception when compound_stmt is executed.