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Exception Class In Java

Last Updated : Mar 11, 2024

Exception Class In Java

In this article we will show you the solution of exception class in java, exception as well as its subclasses are a type of Throwable that represents conditions which a reasonable implementation may wish to catch.

Checked exceptions are the class Exception as well as any subclasses that aren't also subclasses of RuntimeException.

Checked exceptions must be declared in the throws clause of a method or function Object() { [native code] } if they are thrown by the method or constructor's execution and propagate outside of the technique or function Object() { [native code] } boundary.

Creates a brand-new exception with the details message and cause specified.

It should be noted that detail message affiliated with the cause is not instantly incorporated into the detail message of this exception.

Parameters:

  • message - the specifics message (which the Throwable saves for later retrieval). method getMessage()).
  • cause - the consequence (which the Throwable saves for later retrieval.
  • method getCause()). (A null value is allowed, indicating that cause seems to be nonexistent or unidentified.)

An inaccuracy is a problem, bug, or human-made mistake that occurs during the execution of a programme.

An exception disrupts the program's flow and causes it to terminate abnormally. It is not recommended to terminate the programme abnormally, so we must handle these exceptions.

For handling exceptions, Java provides the Java.lang.Exception class, which inherits this same methods and properties of the Object and Throwable classes.

There are the following constructors available in the Exception class:

1. exception for the general public()

This same public Exception () method creates an exception with no detail message.

Throwable.initCause can then be used to initialise the cause (Java.lang.Throwable). It's a default function Object() { [native code] } with no message or Throwable cause parameters.

2. exception for the general public (String message)

The public Exception(String message) constructs a new exception based on the detailed message provided.

The cause, like the default function Object() { [native code] }, can be initialised later by calling Throwable.initCause (Java.lang.Throwable).

It's a parameterized function Object() { [native code] } that accepts a String parameter for the detail message. The specifics message is saved so that it can be retrieved by the Throwable.getMessage() method.

An exception (or outstanding event) is indeed a problem that occurs during programme execution.

The flow of the program is disrupted, and the program or application terminates unusually if an exception occurs; therefore, these exceptions should be handled.

A network connection was lost in the midst of a communication, or the JVM ran out of memory.

Exceptions are sometimes caused by user error, other times by programming error, while other times they are caused by faulty hardware.

Exceptions can be classified into three types based on these criteria. Understanding exceptions is the first step towards understanding how Java handles them.

Checked exceptions are exceptions that are inspected (notified) by compiler during compilation; these are also known as compile-time exceptions.

These exceptions cannot be ignored; instead, the programmer must take care of (handle) them.

Step By Step Guide On Exception Class In Java :-

import java.io.*
import java.io.FileReader;
public class TalkersCode{
   public static void main(String args[]) {
     file = new file("C://file.txt");
      FileReader fr = new FileReader(file);
   }
}
  1. First, we make an import function called java.io.file and java.io.filereader.
  2. The following step involves creating a class named TalkersCodeIOFile.
  3. The following step is to write a static function.
  4. As a result, as a string argument, a public static void main has been created.
  5. The following step involves creating the file.
  6. We then end the programme.

Conclusion :-

An exception (or outstanding event) is indeed a problem that occurs during programme execution.

The flow of the program is disrupted, and the program or application terminates unusually if an exception occurs; therefore, these exceptions should be handled.

I hope this article on exception class in java helps you and the steps and method mentioned above are easy to follow and implement.

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