Types of Exception in Java with Examples - GeeksforGeeks.
In java, exception is an event that disrupts the normal flow of the program. It is an object which is thrown at runtime. Types of Exception There are mainly two types.
Programs can throw a predefined exception class in the System namespace (except where previously noted), or create their own exception classes by deriving from Exception. The derived classes should define at least four constructors: one parameterless constructor, one that sets the message property, and one that sets both the Message and InnerException properties.
To avoid an array index out-of-bounds exception, one should use the enhanced-for statement where and when they can. The primary motivation (and use case) is when you are iterating and you do not require any complicated iteration steps. You would not be able to use an enhanced-for to move backwards in an array or only iterate on every other element.
If the index integer is higher than the array bounds, an exception will happen.. The new exception created displays the message “Index is out of assigned range.” The second parameter is a string that describes the part of the statement that caused the error, then the inner exception is passed to the constructor. Here is another example using file IO operations. using System; using.
This page provides a complete list of all public exceptions and errors available in the Java API, grouped by package.
If we go out of the range of the array an ArryIndexOutOfBoundException is thrown. Programs may have various type of exceptions which can be handled through multiple catch blocks. In this example third catch block is for general Exception type. The general Exception catch block should be put at the end.
If the type of exception that occurred is listed in a catch block, the exception is passed to the catch block much as an argument is passed into a method parameter. Example. The following is an array declared with 2 elements. Then the code tries to access the 3 rd element of the array which throws an exception.