Services
Technology Web App Development Mobile App Development Windows App Development Database Development UI/UX Development Cloud Development SEO Digital Marketing Guest Posting Content Writing Artificial Intelligence Data Science ERP Development CRM Development CMS Development LMS Development Business Listing Blockchain Technology Startup Promotion AI Tools Integration
Products
Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller
Developer
Article Blog Forum Interview Beginner News Startup Quiz
Users
Career
Apply Job Internship
Pricing
Login Sign Up Get a Quote

forum

home / developersection / forums / who and how handle the exception when we use throws?
Ask Question
Revati S Misra
Revati S Misra

Student

Skilled in SEO, content writing, and digital marketing. Completed several years of working in many organizations including multinational companies. I love to learn new things in life that keep me motivated.

Message

1 Answers

Aryan Kumar
Aryan Kumar 29 Jul 2023
Report Abuse

The throws keyword in Java is used to declare that a method can throw an exception. This means that the method does not handle the exception itself, but instead passes it on to the caller of the method. The caller of the method is then responsible for handling the exception or propagating it further.

The throws keyword is used in the method signature, after the method name and parameter list. The throws keyword is followed by a comma-separated list of the exceptions that the method can throw.

For example, the following method declaration declares that the readFile() method can throw an IOException exception:

Java

public void readFile(String fileName) throws IOException {
  // ...
}

If the readFile() method encounters an IOException while reading the file, it will throw the exception. The caller of the readFile() method will then need to handle the exception or propagate it further.

How the exception is handled depends on the caller of the method. The caller may choose to:

  • Handle the exception: This means that the caller will catch the exception and take some action to deal with it. For example, the caller might print an error message or terminate the program.
  • Propagate the exception: This means that the caller will not handle the exception, but will instead pass it on to the next method in the call stack. The next method can then handle the exception or propagate it further.

The throws keyword is a powerful tool that can be used to handle exceptions in Java. By using the throws keyword, you can ensure that exceptions are handled in a consistent manner throughout your code.

advertising