Exception Handling In Java

Chapter: Exception Handling Last Updated: 24-03-2017 09:02:17 UTC

Program:

            /* ............... START ............... */
                
public class JavaExceptionExample {

	public static void main(String args[]) {

		String s = "abc";
		int i = Integer.parseInt(s);// NumberFormatException

		int a[] = new int[5];
		a[10] = 50; // ArrayIndexOutOfBoundsException

		String str = null;
		System.out.println(str.length());// NullPointerException

		int abc = 50 / 0;// ArithmeticException

	}
}
                /* ............... END ............... */
        

Notes:

  • The exception handling in java is one of the powerful mechanism to handle the runtime errors so that normal flow of the application can be maintained.
  • Exception handling helps programmer to handle runtime errors so that the normal flow of the application can be maintained.
  • An exception can occur due to many different reasons, some of them are:
  • A user has entered invalid data.
  • A file that needs to be opened cannot be found.
  • A network connection has been lost in the middle of communications or the JVM has run out of memory.
  • In java, exception is an event that disrupts the normal flow of the program. It is an object, which is thrown at runtime.
  • The main advantage of exception handling is that normal flow of the application is maintained. Normally Exception disrupts(make a break in) the normal flow of the application that is why we use exception handling in java.

Tags

Exception Handling, Java, Exception Handling

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