How to Handle Java Writing Custom Exceptions

How to Handle Java Writing Custom ExceptionsJava writing custom exceptions is a great way to customize your programs. When you write a Java program, errors are really common and all of them can be avoided if you use exception handling. But what if you don't know how to handle it?Java writing custom exceptions are actually not difficult, if you know the basics of it. Writing custom exceptions is easy, if you know how to do it. These mistakes will really create problems in your code, so do not make the same mistake. Learn how to deal with it, so you will avoid problems while writing your code.As an example, one of the mistakes in writing custom exceptions is to include an assertion that should have been included in the code. You should never include an assertion statement in the exception class. Assertions are not used by exceptions. They will only cause troubles, as the exception has already been handled by the compiler. So, when writing exception classes, make sure you don't include assertions in them.Another mistake that most beginners do is write invalid code in their programs. You should not use invalid code at all. This is the big problem. You should always write your code properly, no matter if it is not a regular programming language. Using invalid code in your programs is a big no-no.Also, using null pointers is a big no-no. In Java, it is actually dangerous. It is not recommended to use null pointers in any type of programming language. You should not use null pointers in any part of your programs.You should not use system calls, except for IOCTL functions. These functions will always use system calls, unless you use wrapper libraries. The only exception is java.lang.String. In Java, these functions are called String methods, and the String object is always passed through System calls. Always be aware of these things.If you need to perform a complex operation on a parameter, always write it in brackets. If the brackets are omitted, it will not compile. This can be really confusing for some beginners.Java writing custom exceptions can really help you when you have problems with your programs. But before using these, you should always study them, so you will know how to write them in your programs. You should always remember that you are not using regular programming languages. Always put the above-mentioned mistakes in mind when writing custom exceptions.