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COMPUTER SOFTWARE APPLICATION - CITS
Internal Working of Java try-catch block
The JVM firstly checks whether the exception is handled or not. If exception is not handled, JVM provides a
default exception handler that performs the following tasks:
- Prints out exception description.
- Prints the stack trace (Hierarchy of methods where the exception occurred).
- Causes the program to terminate.
But if the application programmer handles the exception, the normal flow of the application is maintained, i.e., rest
of the code is executed.
Problem without exception handling
Let’s try to understand the problem if we don’t use a try-catch block.
Example 1
TryCatchExample1.java
public class TryCatchExample1 {
public static void main(String[] args) {
int data=50/0; //may throw exception
System.out.println(“rest of the code”);
}
}
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CITS : IT&ITES - Computer Software Application - Lesson 101 - 108
