Java program to demonstrate the use of finally block

GD.java

class GD
{
    public static void main(String args[])
    {
        String s=null;
        try
        {
            System.out.println("Length: "+s.length());
        }
        catch(Exception e)
        {
            System.out.println("Exception caught");
        }
        finally
        {
            System.out.println("Finally block always get executed");
        }
    }
}

Output

godarda@gd:~$ javac GD.java
godarda@gd:~$ java GD
Exception caught
Finally block always get executed
godarda@gd:~$

GD.java

class GD
{
    public static void main(String args[])
    {
        String s=null;
        try
        {
            System.out.println("Length: "+s.length());
        }
        catch(ArithmeticException e)
        {
            System.out.println("Exception caught in the first catch block");
        }
        catch(RuntimeException e)
        {
            System.out.println("Exception caught in the second catch block");
        }
        catch(Exception e)
        {
            System.out.println("Exception caught in the third catch block");
        }
        finally
        {
            System.out.println("Finally block always get executed");
        }
    }
}

Output

godarda@gd:~$ javac GD.java
godarda@gd:~$ java GD
Exception caught in the second catch block
Finally block always get executed
godarda@gd:~$

The following try and finally block sequence is allowed

GD.java

class GD
{
    public static void main(String args[])
    {
        String s=null;
        try
        {
            System.out.println("Length: "+s.length());
        }
        finally
        {
            System.out.println("Finally block always get executed");
        }
    }
}

Output

godarda@gd:~$ javac GD.java
godarda@gd:~$ java GD
Finally block always get executed
Exception in thread "main" java.lang.NullPointerException
    at GD.main(GD.java:8)
godarda@gd:~$

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