How to use finally block for catching exceptions?
This example shows how to use finally block to catch runtime exceptions (Illegal Argument Exception) by the use of e.getMessage().
public class ExceptionDemo2 { public static void main(String[] argv) { new ExceptionDemo2().doTheWork(); } public void doTheWork() { Object o = null; for (int i=0; i<5; i++) { try { o = makeObj(i); } catch (IllegalArgumentException e) { System.err.println ("Error: ("+ e.getMessage()+")."); return; } finally { System.err.println("All done"); if (o==null) System.exit(0); } System.out.println(o); } } public Object makeObj(int type) throws IllegalArgumentException { if (type == 1) throw new IllegalArgumentException ("Don't like type " + type); return new Object(); } }
The above code sample will produce the following result.
All done java.lang.Object@1b90b39 Error: (Don't like type 1). All done
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