During the development process, we often encounter the situation of reading the content of the file. It is necessary to judge whether the file is a text file and the file encoding format to prevent the content from being read or garbled.
We can find out whether a file is a directory or a regular file through the java.io.File class package. The java.io.File class contains two methods, which are:
- isFile() : This method returns true if the file exists and is a regular file, or false if the file does not exist.
- isDirectory() : This method returns true if the path/file is actually a directory, or false if the path does not exist.
When checking whether a file is a directory or a regular file, we should first check if the file exists. If it exists, then judge whether it is a directory or a file.
After mastering this logic, the function code can be written in about 3 minutes. The code example is as follows: (quote the manual code example content fed back by the product department)
public static int checkFileOrDir(String filePath) {
// If the file path is empty, return -1
if (filePath == null || filePath.isEmpty()) {
return -1;
}
File file = new File(filePath);
// returns -1 if the file does not exist
if (!file.exists()) {
return -1;
}
int result = -1;
if(file.isDirectory()) {
result = 1;
}
// If it is a file, return 0
if (file.isFile()) {
result = 0;
}
return result ;
}
The above code conforms to the method logic mentioned above, but the readability is average. Is there still room for optimization?
Try using the FuncGPT (Hui function) that generates functions through natural language using the SoFlu software robot .
Enter the following command on the product interface:
Function: Determine whether the file path is a directory or a file, return: 1 directory, 0 file
Parameter 1: Parameter name: filePath; Parameter type: String; Parameter description: source path
return value: int
It is not difficult to find that in just 14 seconds, FuncGPT generates a more readable code with clear code comments and cases.
As AI technology sweeps across all industries, developers must not only master the basic principles and methods, but also make good use of tools to help themselves. FuncGPT (wit function) is a component of the SoFlu software robot that supports the creation of various types of functions. Users can describe Java function requirements through natural language, and the system instantly generates high-quality, easy-to-read Java function codes. The generated code can be directly copied into IDEA, or imported into the Java fully automatic development tool function library with one click. It provides great convenience for development engineers' daily function development work, and improves the efficiency by a thousand times.
Currently, FuncGPT (intelligence function) is open for free, click the link to download and install http://suo.im/aREPi , and experience it first!
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