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238. Nested try catch blocks








We can write try catch block inside another try block. By having nested try catch blocks, we can separately handle multiple exceptions in the code.

Syntax -

   try
    {
             try
              { 
                 //Code
               }
             catch( )
               {
                 //Code
               }

        //Code 

     }
  catch( )
   {
      //Code
   }

Lets implement this on Eclipse IDE -

1. Launch Eclipse IDE, create new Java Project 'Project 47' as shown below -


2. Create a new Java Class file 'NestedTryCatchDemo.java' with main( ) method as shown below -


3. Create a set of statements which can throw more than one exceptions as shown below -


4. Lets keep the above code in the try block and handle the exception using the catch block as shown below (i.e. Using a single try catch blocks to handle two exceptions)  -


5. Save and Run the Java Class 'NestedTryCatchDemo.java' and observe that only one exception out of two is handled and the exception details are displayed in the output as shown below -



6. Now write another try catch block inside the existing try catch block to handle the first exception separately as shown below -



7. Save and Run the Java Class 'NestedTryCatchDemo.java' and observe that two exception out of two are handled and the exception details are displayed in the output as shown below -


Hence we can use nested try catch blocks to handle the multiple exceptions separately in the program code.






Please comment below to feedback or ask questions.

Catching Multiple Exceptions in a single catch block  will be explained in the next post.









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