How to use try catch block in Java

Question

I am writing a program for testing the nature of the number. I am using Eclipse and whenever there is an error the debugger section pops up and I am unable to verify the error. Hence, I want to use a try catch block to see what is the error I am getting. Can someone help?

Thank you!

Answer 1

Hey @Jino,

Using try catch block for your code is always a good practice. Using try catch block you come to know about the different types of error and exceptions.

Here is the synatx:

try

{
     your block of code
}

catch(Exception e)// here if you know the type of exception going to happen you can mention that.

{
     System.out.println(e);
}

Answer 2

Try block

The try block contains set of statements where an exception can occur. A try block is always followed by a catch block, which handles the exception that occurs in associated try block. A try block must be followed by catch blocks or finally block or both.

Syntax of try block

try{
   //statements that may cause an exception
}

While writing a program, if you think that certain statements in a program can throw a exception, enclosed them in try block and handle that exception.

Catch block

A catch block is where you handle the exceptions, this block must follow the try block. A single try block can have several catch blocks associated with it. You can catch different exceptions in different catch blocks. When an exception occurs in try block, the corresponding catch block that handles that particular exception executes. For example if an arithmetic exception occurs in try block then the statements enclosed in catch block for arithmetic exception executes.

Syntax of try catch in java

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