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What is the concept of Exception Propagation?

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Pragya Keshap answered on February 4, 2023 Popularity 3/10 Helpfulness 1/10

answer What is the concept of Exception Propagation?

What is the concept of Exception Propagation?

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In Exception Propagation, uncaught exceptions are propagated in the

call stack until stack becomes empty. This propagation is called

Exception Propagation.

Let say an exception propagates from one method to another method.

A() calls B(), which calls C(), which calls D(). And if D() throws

an exception, the exception will propagate from D to C to B to A,

unless one of the methods catches the exception.

class Simple {
  
    // exception propagated to n()
    void m() throws IOException
    {
        // checked exception occurred
        throw new IOException("device error");
    }
  
    // exception propagated to p()
    void n() throws IOException
    {
        m();
    }
    void p()
    {
        try {
  
            // exception handled
            n();
        }
        catch (Exception e) {
            System.out.println("exception handled");
        }
    }
  
    public static void main(String args[])
    {
        Simple obj = new Simple();
        obj.p();
        System.out.println("normal flow...");
    }
}

https://www.geeksforgeeks.org/exception-propagation-java/

Popularity 3/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: concept exception java

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Contributed on Feb 04 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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