An Experienced Programmer’s Introduction to Java - Java Application Development on Linux - page 77

Example 3.20 Catching different kinds of exceptions
try {
for (i = 0; i < max; i++) {
someobj.methodB(param1, i);
} // next i
} catch (SpecialException sp) {
System.out.println(sp.whatWentWrong());
} catch (AlternateException alt) {
alt.attemptRepair(param1);
} catch (Exception e) {
// do the error handling here:
System.out.println(e.toString());
e.printStackTrace();
}
// continues execution here after any catch
Example 3.21 Output from printStackTrace()
java.lang.Exception: Error in the fraberstam.
at InnerMost.doOtherStuff(InnerMost.java:6)
at MidModule.doStuff(MidModule.java:7)
at AnotherClass.doSomething(AnotherClass.java:11)
at ExceptExample.main(ExceptExample.java:14)
AnotherClass , which itself had been called from line14 in the
ExceptExample class' main() method.
We want to mention one more piece of syntax for the try/catch block.
Since execution may never get to all of the statements in a try block (the excep-
tion may make it jump out to a catch block), there is a need, sometimes,
for some statements to be executed regardless of whether all the try code
completed successfully. (One example might be the need to close an I/O con-
nection.) For this we can add a finally clause after the last catch block. The
code in the finally block will be executed (only once) after the try or after
the catch —even if the path of execution is about to leave because of throwing
an exception (Example 3.22).