Question
Which of the following correctly handles multiple
exceptions in Java?Solution
In Java, a single try block can handle multiple exceptions by attaching multiple catch blocks. Each catch block specifies a distinct exception type. The exception hierarchy determines the order of catch blocks—child exceptions must precede parent exceptions. Example: try {   int a = 5 / 0;  // ArithmeticException   int[] arr = new int[2];   System.out.println(arr[3]); // ArrayIndexOutOfBoundsException } catch (ArithmeticException e) {   System.out.println("Arithmetic Exception caught"); } catch (ArrayIndexOutOfBoundsException e) {   System.out.println("Array Index Out of Bounds Exception caught"); } catch (Exception e) {   System.out.println("Generic Exception caught"); } ________________________________________ Why Other Options Are Incorrect: 1. Separate try blocks for each exception: This is inefficient and makes code less readable. A single try block with multiple catch blocks is the recommended approach. 2. Nesting try blocks within each other: This is not a standard practice unless the logic explicitly demands it. It can lead to convoluted and hard-to-maintain code. 3. Single catch block for all exceptions: While possible, this is a poor practice as it does not differentiate exception types, leading to less precise error handling. 4. Writing the exception type as a string: Java’s catch block requires exception classes, not strings, for type checking.
What is referential integrity?
Which deadlock prevention scheme allows older transactions to preempt younger ones?
In an E-R Diagram, entities are typically represented by:
In PL/SQL, a `CURSOR` is used to:
A system is in a safe state when:
Which database model represents data in a tree-like structure, where each child record has only one parent?
A "diamond" shape in an E-R Diagram typically represents a:
Distributed transactions typically use which protocol for atomicity?
Which normal form ensures no partial dependency of non-prime attributes on a candidate key?
Which of the following is a non-relational database?