Throw Exception In Java

Chapter: Exception Handling Last Updated: 15-07-2016 10:25:37 UTC

Program:

            /* ............... START ............... */
                
public class JavaThrowExample {
	static void demoproc() {
		try {
			throw new NullPointerException("demo");
		} catch (NullPointerException e) {
			System.out.println("Caught inside demoproc.");
			throw e; // rethrow the exception
		}
	}

	public static void main(String args[]) {
		try {
			demoproc();
		} catch (NullPointerException e) {
			System.out.println("Recaught: " + e);
		}
	}
}
                /* ............... END ............... */
        

Output

Caught inside demoproc.
Recaught: java.lang.NullPointerException: demo

Notes:

  • throw keyword is used in Java to throw custom exception.
  • Syntax : throw exception; eg: throw new IOException("Error ....)

Tags

Throw Statement, Java

Similar Programs Chapter Last Updated
Java Custom Exception Exception Handling 25-03-2017
Exception Type In Java Exception Handling 24-03-2017
Exception Handling In Java Exception Handling 24-03-2017
Java Try Without Catch Block Exception Handling 05-11-2016
Java Exception Using GetMessage() Exception Handling 05-11-2016
Java Exception Using PrintStacktrace() Exception Handling 05-11-2016
Java Exception Using Class Object Exception Handling 05-11-2016
Java User Defined Exception Example Exception Handling 05-09-2016
Java Exception With Thread Example Exception Handling 04-09-2016
Java Multiple Exception Handling Example Exception Handling 04-09-2016
Java Pass Argument While Throwing Exception Exception Handling 04-09-2016
Java Exception With Overloaded Methods Exception Handling 04-09-2016
Java Catch Exception Example Exception Handling 04-09-2016
Java Empty Stack Exception Exception Handling 04-09-2016
Java Runtime Exceptions Example Exception Handling 04-09-2016
Java Exception Methods Example Exception Handling 04-09-2016
Java Exception Hierarchies Example Exception Handling 04-09-2016
Throw And Throws In Java Exception Handling 20-06-2016
IllegalArgumentException In Java Exception Handling 25-04-2016
ArrayStoreException In Java Example Exception Handling 09-09-2017
Print Stack Trace In Java Exception Handling 03-08-2016
Shutdown Hook In Java Example Exception Handling 03-08-2016
NumberFormatException In Java Exception Handling 19-04-2016
NullPointerException In Java Exception Handling 19-04-2016
ClassCastException In Java Exception Handling 22-07-2016
ArrayIndexOutOfBoundsException in java Exception Handling 22-07-2016
ArithmeticException In Java Example Exception Handling 19-04-2016
Unchecked Exception In Java Exception Handling 19-04-2016
Checked Exception In Java Exception Handling 19-04-2016
Java Exception Handling Example Exception Handling 19-04-2016

1 2