When you first start writing java code, you will definitely encounter various bugs. Of course, this is understandable for beginners. First, let’s talk about a common mistake, as follows :
Generally when writing a new program, it starts with Hello, World. For example, when running javac Hello.java on DOS, an error will be reported: File not found (recommended: java video Tutorial)
If you encounter this problem, you must first eliminate it from the following aspects:
1. Check whether the environment variables are configured correctly, for example Output a javac command, which can output help information, indicating that the configuration information is correct
2. If the environment configuration is correct, check whether the path of the executed java file is correct. For example, the java file is in the D drive, the current path It is indeed the C drive.
3. Check whether the extension of the java file is .java. If your system folder option hides the extension txt, then the file you changed may be Hello.java.txt, but of course it cannot be found. The file is reached (this was the mistake when this blogger first started writing)
At this time, select "Tools-->Folder Options-->View-->-Hide Already If you know the extension of the file type, check it and remove it. Then you can check whether your suffix name is wrong
4. Of course, it is to check whether your file name is wrong. By the way, is the class in the file name correct? After eliminating the errors, run as follows:
For more java knowledge, please pay attention to java basic tutorialColumn.
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