Some possible combinations of try catch finally
try
{
}
catch(Exception e)
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
catch(Exception e)
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
catch(ArithmeticException e)
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
finally
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
finally
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
try
{
}
catch(SQLException e)
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
try
{
}
finally
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
catch(Exception e)
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
finally
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
}
finally
{
}
catch(Exception e)
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
}
System.out.println("javabychetan");
catch(Exception e)
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
}
catch(ArithmeticException e)
{
}
System.out.println("javabychetan");
catch(Exception e)
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
}
catch(Exception e)
{
}
System.out.println("javabychetan");
finally
{
}
The above combination is invalid.And we will get Compile Time Error.
—————————————————————————————————————————————
try
{
try
{
}
catch(Exception e)
{
}
catch(Exception e)
{
}
The above combination is valid.
—————————————————————————————————————————————
try
{
try
{
}
catch(Exception e)
{
}
The above combination is invalid.And we will get Compile Time Error saying "try without catch or finally"
—————————————————————————————————————————————
Conclusions:-
- In try catch finally, the order is very important.
- Whenever we are using try block compulsory we should take either catch block or finally block, otherwise we will get compile time error saying "try without the catch or finally".
- Whenever we are using catch block compulsory try block must be required.Otherwise, we will get compile time error.
- Whenever we are using finally block compulsory try block must be required.Otherwise, we will get compile time error.
- Inside try catch and finally block, we can declare try, catch & finally blocks means nesting of try -catch-finally blocks is possible.
- For all the three try, catch, finally block { } curly braces are mandatory.
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