Java program to demonstrate the use of finally block

Codeaft.java

class Codeaft
{
    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

codeaft@codeaft:~$ javac Codeaft.java
codeaft@codeaft:~$ java Codeaft
Exception caught
Finally block always get executed
codeaft@codeaft:~$

Codeaft.java

class Codeaft
{
    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

codeaft@codeaft:~$ javac Codeaft.java
codeaft@codeaft:~$ java Codeaft
Exception caught in the second catch block
Finally block always get executed
codeaft@codeaft:~$

The following try and finally block sequence is allowed

Codeaft.java

class Codeaft
{
    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

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

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Java program to demonstrate the use of nested try, catch, and finally blocks Java program to handle the ArithmeticException Java program to handle the NullPointerException

Codeaft

Java Programming