Java Illuminated, 5th Edition

11.6 Writing and Appending to Text Files

In the previous sections, we learned how to read data from a text file. But how did the data get into the file in the first place? It could be that someone put the data into the file using a text editor, such as Notepad in Windows, or TextEdit in MacOS. Typing data into a file is convenient when the amount of data is small. But very often files contain a significant amount of data, typically written to the file by a computer program. For instance, a web server writes to log files to keep track of the visitors accessing the website, how the visitors got to the website, the time they arrived, etc. If the web server comes under attack from a hacker, these log files can be consulted to determine where the ...