Java™ Application Development on Linux - Dator

3.2 Fundamental Language Elements77Example 3.20 Catching different kinds of exceptionstry {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 catchExample 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 line 14 in theExceptExample 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 exceptionmay 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 codecompleted successfully. (One example might be the need to close an I/O connection.)For this we can add a finally clause after the last catch block. Thecode in the finally block will be executed (only once) after the try or afterthe catch—even if the path of execution is about to leave because of throwingan exception (Example 3.22).