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1: Please describe the simple principle and application of exception handling mechanism in Java, and explain the difference between error and exception.
Every time an exception is generated, if there is no program to handle, then the program will
For example, the Add method of a user Class, returns the user object instance in case of success, returns false in case of failure and can get the reason string of failure by the GetError method ....
Speaking of which, I seem to understand that the
Transferred from: https://www.jianshu.com/p/e8bbee3c1c4aThe parent classes of the error class and the exception class are throwable classes, the difference being:The error class generally refers to problems related to virtual machines, such as
1: Describe the simple principle and application of the exception handling mechanism in Java, and describe the difference between error and exception?
If noProgramIf an exception is generated, the JVM will throw an instantiated object of the
The Java language requires that all thrown (throw) exceptions from the Java program (regardless of who wrote the code) must be derived from Throwable. Of course, in actual Java programming, because the JDK platform has designed a very rich and
Exception handling is a very important aspect of program design, but also a great difficulty in programming, starting from C, you may already know how to use if...else ... To control the exception, may be spontaneous, however, this control is
The difference between error and exception in php and its application, errorexception. The difference between error and exception in php and the difference between errorexceptionerror and exception, it seems that php's exception handling process is
In Java, all exceptions have a common ancestor throwable (can be thrown). Throwable specifies the commonality of any problems that can be transmitted through a Java application by using the exception propagation mechanism available in the code.
For example, if the add method of a UserClass is successful, the user object instance is returned. If the instance fails, False is returned. You can use the getError method to obtain the string of the cause of failure ........ speaking of this, I
0. Why the exception handling mechanism should be introduced.
Before the exception mechanism is introduced, the exception is handled using If...else,sysout and Syserror methods. Exception handling is a very important aspect of program design, but
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