Throws keyword

Throws Keyword: The throws keyword is used in a method declaration to specify the types of exceptions that the method can throw. When a method is invoked,...

Throws Keyword:

The throws keyword is used in a method declaration to specify the types of exceptions that the method can throw. When a method is invoked, the compiler will check if the method can execute the code in the method body. If it cannot, the method will throw an exception of the specified type.

Example:

java

public class ThrowsKeyword {

public void throwException() throws IOException {

// Code to throw IOException

}

Explanation:

The throws keyword is followed by the name of the exception type.
The throws keyword is placed within the method declaration, before the return keyword.
If an exception of the specified type is thrown, the throws keyword will automatically propagate up the call stack.
The compiler will check if the method can execute the code in the method body. If it cannot, the method will throw an IOException when it is invoked.

Benefits of Using Throws:

Exception Handling: It allows you to handle exceptions gracefully by catching them in the method's catch block.
Code Reusability: By throwing specific exceptions, you can ensure that only code that can handle the exception is executed.
Improved Code Maintainability: It makes it clear what exceptions a method can throw, which can improve code maintainability.

Note:

The throws keyword is optional. If a method does not specify any exception types, it will not throw any exceptions.
Exceptions can be declared as parameters of a method as well