Try Catch Block in Java

Try Catch In Java: Exception handling is an important part of writing reliable and robust code in Java. When a program encounters an error or unexpected event, it can throw an exception that must be caught and handled properly to prevent the program from crashing or behaving unexpectedly.

The try-catch block is a fundamental mechanism of Java’s exception-handling system that allows developers to catch and handle exceptions that may occur during the execution of their program. The try block contains the code that might throw an exception, while the catch block contains the code that handles the exception.

The try-catch block is essential for providing more informative error messages to users and improving Java applications’ overall reliability and robustness. With the proper use of try-catch blocks, developers can gracefully handle exceptions and ensure their software runs smoothly even when unexpected errors occur.

Try Catch Java

Java provides some specific keyword for handling the Exceptions one by one and also try to understand them with some simple Java programs:

Try Block In Java

 Using this keyword, we can create a block to write statements that may generate exceptions. a try block is always written with a catch block or finally block, which handles the exception that occurs during the program’s execution; the syntax of a try block looks like this:.

try
{
//statements that may cause an exception
}

Catch block In Java.

The Java Catch block is used to handle the exception and must always follow a try block. in a program, a single try block can have multiple catch blocks used to handle different exceptions in the different catch blocks. so that when a particular exception occurs, a particular catch block will be executed. The syntax for catch block looks like this below.

try
{
//statements that may cause an exception
}
catch (exception(type) e(object))‏
{
//error handling code
}

Finally, Block In Java

Finally, this block is optional and can be used with the try-catch block in Java. During the program’s execution, if an exception occurs when the program’s flow is interrupted, some resources will be left in an open state and not closed. In that scenario, the block finally helps us close such scenarios because the block is always executed whether an exception occurs or not. and the syntax looks like the one below.

try
{
//statements that may cause an exception
}
catch (exception(type) e(object))‏
{
//error handling code
}
finally
{
//statements to release the resources
}

How do you handle exceptions using the Try Catch Block In Java Example Program?

package com.softwaretestingblog.programs;
public class UsingTryCatch 
{
   public static void main(String[] args) 
{
      try
      {
         int i=9;
         int z=i/0;
         System.out.println("The Value Of I Is -" +z);
      }
      catch(ArithmeticException e)
      {
         System.out.println(e.getMessage());
         //e.printStackTrace();
      }
   }
}

Output:

/ by zero

Ref: article