Q3(a). Explain the purpose of exception handling by taking one of the following scenarios.  b. Write a piece of Java code that illustrates how you handle the scenario selected in Q3(a)” Scenario 1. Users enter values that are not included in a predefined list. Scenario 2. A potentially corrupt file could be uploaded to your program. Scenario 3. A database query returns some null value. Scenario 4. A remote method invocation returns null value

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A:

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