How to solve java.lang.IllegalArgumentException: input == null! exception

java.lang.IllegalArgumentException, the Chinese meaning is illegal parameter exception. There are many types of reasons for this exception, which require specific analysis of the specific situation.

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Here we only discuss one type, if the prompt after the exception is: input == null!. As shown below:

#The reason for this exception is: there is an error in the code for writing the path in the program, and the path information should be checked.

Explanation: The following prompt is input == null!, which in Chinese means that the input is empty. It means that when the program is executed, no resources are obtained (in the above, it means that the picture resources are not obtained). When these initial data are not obtained, there is no way to operate on them, resulting in an exception.

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