What are the differences in error handling in Java and Kotlin, and how are exceptions implemented in each language?

In Java and Kotlin, error handling is based on exceptions, but there are important differences:

• Java distinguishes between checked and unchecked exceptions. Checked exceptions must be either handled (try-catch) or declared in the method signature (throws). This forces the programmer to explicitly deal with potential errors.

• Kotlin does not have checked exceptions. All exceptions are considered unchecked, and the compiler does not require explicit handling or declaration. This simplifies the code but requires attentiveness when working with errors.

Exception implementation:

• In Java, exceptions inherit from Throwable, most often from Exception or RuntimeException.

• In Kotlin, exceptions also inherit from Throwable. You can create your own exception classes, just like in Java.

Example of exception handling in Java:

try {
    // code that may throw an exception
} catch (IOException e) {
    // handling
}

In Kotlin:

try {
    // code
} catch (e: IOException) {
    // handling
}

But in Kotlin, you do not need to declare throws in the function signature.