Output debug information: During program development, the println function can be used to display the values of variables or certain key information to help debug the program.
Print user interaction information: You can use println to print user input or program output to provide a user-friendly interaction experience.
Log the information: During the program execution, you can use println to print log messages, recording the running status and relevant information of the program.
Output exception information: Use println to output exception information when the program encounters an exception to help locate and solve the problem.
Format output: You can use println with string formatting operators or the String.format method to output formatted information, making it clearer and easier to read.
