try/catch vs null check in java

Question

Sometimes I face I must write a piece of code like this (usually it have more nested if and more complex structure but for the example is enought)

public voi         


        

Answer 1

Using exceptions is always a bad idea in terms of performance, no matter how slow the mechanism used to be and is now. Whenever an exception is thrown, the full stack will be unrolled to create the stack trace. Thus, like Lois Wasserman said, you should not rely on them for (regular) program flow but for exceptional cases.

The nested ifs aren't the definition of beauty, but will give you the ability to print additional information like 'B is null' etc.