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How to use a file in Java?
In order to use the File class, you need to create an object of the class and specify the filename or directory name. File obj = new File( "filename. txt" ); Java uses the concept of a stream to make I/O operations on a file.
What is import Java io file?
The import statement tells the compiler where to look for the external classes you use in your code. It needs to find them to check that you are using them correctly, calling methods that exist, passing the right arguments to them, etc. If you import java.io.
