Detailed examples of Java custom exception classes
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Java
Detailed examples of Java custom exception classes
Why write your own exception class? If there is no exception provided in the JDK, we should write it ourselves. Our commonly used classes, arithmeticexception, NullPointerException, negativearraysizeexception, ArrayIndexOutOfBoundsException and SecurityException, all continue the parent class of runtimeException, and the parent class also has a parent class of exception. Then, when we write our own exception class, we also continue the exception class.
Practice:
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