ExceptionsOverviewUncaught ExceptionsSlide 4try/catchPropagationException Class HierarchyDesigning/Throwing Own ExceptionExceptionsOverview•“An exception is an object that defines an unusual or erroneous situation.”•Examples–Divide by 0–Array index out of bounds–File cannot be found–Follow a null referenceUncaught Exceptionsint a = 5;int b = 0;int c = a/b;Exception in thread "main" java.lang.ArithmeticException: / by zeroat ExceptionsExamples.main(ExceptionsExamples.java:12)Uncaught Exceptions•Call stack trace–info about where the exception occurred–info about all methods that were called to get to the method where the exception occurred Exception in thread "main" java.lang.ArithmeticException: / by zeroat ExceptionsExamples.caller2(ExceptionsExamples.java:20)at ExceptionsExamples.caller1(ExceptionsExamples.java:12)at ExceptionsExamples.main(ExceptionsExamples.java:8)try/catchtry {//statements that may throw an exception} catch(Exception_Type name) {//what to do in case of exception //Exception_Type} catch(Another_Type another_name) {//what to do in case of exception Another_Type}Propagationvoid divider() throws ArithmeticException {int a = 5;int b = 0;int c = a/b;}Exception Class Hierarchy•Throwable–Error–Exception•IOException–EOFException, FileNotFoundException•ClassNotFoundException•RuntimeException–ArithmeticException–ClassCastException–NullPointerExceptionDesigning/Throwing Own Exception•Create a class that extends Exception–OutOfRangeExceptionif out of range {throw new
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