Custom exception class:

The custom exception class is defined with help of extending the Exception class or subclass of Exception.

Java contains some exception classes. But if the program run into problem then create own exception class to handle that exception or problem which is derived from Exception class or subclass of Exception.

The syntax to declare the custom exception class is given below:

public class ClassName extends Exception

{

}

Example:

//Custom exception class definition

public class IllegalException extends Exception

{

//Declare variable

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Chapter 12.8, Problem 12.8.1CP

Chapter 12.9, Problem 12.9.2CP

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Chapter 12 Solutions

MyLab Programming with Pearson eText -- Access Card -- for Introduction to Java Programming and Data Structures, Comprehensive Version

Chapter 12.2, Problem 12.2.1CP Chapter 12.2, Problem 12.2.2CP Chapter 12.2, Problem 12.2.3CP Chapter 12.2, Problem 12.2.4CP Chapter 12.2, Problem 12.2.5CP Chapter 12.2, Problem 12.2.6CP Chapter 12.3, Problem 12.3.1CP Chapter 12.3, Problem 12.3.2CP Chapter 12.4, Problem 12.4.1CP Chapter 12.4, Problem 12.4.2CP

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Chapter 12.9, Problem 12.9.1CP

Solution Summary: The author explains that custom exception class is defined with help of extending the Exception class. Java contains exception classes.

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Chapter 12 Solutions