Difference Between Checked And Unchecked Exception In Java
distinguishing between checked and unchecked exceptions in Java
Difference Between Checked And Unchecked Exception In Java
In Java, checked exceptions are those that are checked at compile time and must either be caught or declared in the method signature using the `throws` keyword. This helps ensure that exceptions are properly handled by developers. Unchecked exceptions, on the other hand, are not checked at compile time and include RuntimeException and its subclasses. These exceptions do not require handling, making them useful for situations where recovering from an exception may not be possible or practical. Overall, checked exceptions are typically used for recoverable errors, while unchecked exceptions are used for unrecoverable errors or unexpected conditions.
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1 - Checked exceptions in Java:
Checked exceptions are the exceptions that must be either caught or declared using a ‘throws’ clause in the method signature.
2) Unchecked exceptions in Java:
Unchecked exceptions are the exceptions that do not need to be caught or declared.
3) Checked exceptions are typically used for anticipated exceptional conditions that a method may encounter, such as file not found or invalid input.
4) Unchecked exceptions are usually caused by programming bugs or logical errors, such as null pointer exceptions or arithmetic exceptions.
5) Examples of checked exceptions include IOException, SQLException, and FileNotFoundException.
6) Examples of unchecked exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and IllegalArgumentException.
7) Checked exceptions are enforced by the compiler at compile time, which means the developer must handle them appropriately.
8) Unchecked exceptions are not required to be handled explicitly, but it's still good practice to do so for graceful error handling.
9) Checked exceptions are part of the method's contract, and the caller of the method is forced to deal with them.
10) Unchecked exceptions are often thrown within the application code itself and do not necessarily need to be handled by the caller.
11) In general, checked exceptions are related to external factors that a method has no control over, while unchecked exceptions usually indicate internal problems within the code.
12) When designing a training program, it is essential to explain the difference between checked and unchecked exceptions to students to help them understand how to handle errors effectively in Java programming.
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