3 different ways to print exception message in java

• In Java there are three ways to find the details of the exception .
• They are 

1. Using an object of java.lang.Exception
2. Using public void printStackTrace() method
3. Using public String getMessage() method.

1.Using an object of java.lang.Exception

•  An object of Exception class prints the name of the exception and nature of the exception.

Write a Java program get detailed message details using exception class object

1. package exceptions;
2. public class ExceptionDetails {
3.  
4. /**
5.  * @www.instanceofjava.com
6.  **/
7.  public static void main(String[] args) {
9.  
10. try {
11.  
12. int x=1/0;
13.             
14. } catch (Exception e) {
15.             System.out.println(e);
16. }
17.  
18. }
19.  
20. }

 Output:

1. java.lang.ArithmeticException: / by zero

 2.Using  public void printStackTrace() method

• This is the method which is defined in java.lang.Throwable class and it is inherited into java.lang.Error class and java.lang.Exception class
• This method will display the name of the exception and nature of the message and line number where exception has occurred.

Write a simple java example program to print exception message to console using printStacktrace() method

1. package exceptions;
2. public class ExceptionDetails {
3.  
4.     /**
5.      * @www.instanceofjava.com
6.      */
7. public static void main(String[] args) {
8. 
   
9.  
10.  try {
11.           int a[]= new int[1];
12.             a[1]=12
13.             
14. } catch (Exception e) {
15.    e.printStackTrace();
16.            
17.  }
18. }
19.  
20. }

 Output:

1. java.lang.ArrayIndexOutOfBoundsException: 1
       at exceptions.ExceptionDetails.main(ExceptionDetails.java:13)

  3.Using public String getMessage() method

•  This is also a method which is defined in java.lang.Throwable class and it is inherited in to both java.lanf.Error and java.lang.Exception classes.
• This method will display the only exception message

Write a Java program print exception message using getMessage() method.

1. package exceptions;
2. public class ExceptionDetails {
3.  
4.     /**
5.      * @www.instanceofjava.com
6.      */
7.     public static void main(String[] args) {
8. 
   
9.  
10.         try {
11.             int x=1/0;
12.             
13.         } catch (Exception e) {
14.             System.out.println(e.getMessage());
15.         }
16.     }
17.  
18. }

 Output:

1.  / by zero