Common methods of the PrintWriter class:
| Method | Throws | Description |
| print(argument) | None | Writes the character representation of the argument type to the file |
| println(argument) | None | Writes the character representation of the argument type to the file and presents a new line |
| flush() | IOException | Flushes any data that's in the buffer to the file. |
| close() | IOException | Flushes any data that's in the buffer to the file and closes the stream. |
Example 1: Code that appends a sring and an object to a text file
// open an ouput stream for appending to the text file PrintWriter out = new PrintWriter( new BufferedWriter( new FileWriter("log.txt", true))); // write a string and an object to the file out.print("This application was run on "); out.print(today);
Example 1: Code that writes a Product object to a delimited text file
// open an ouput stream for overwriting a text file PrintWriter out = new PrintWriter( new BufferedWriter( new FileWriter(productsFile))); // write the Product object to the file out.print(product.getCode() + "\t"); out.print(product.getDescription() + "\t"); out.print(product.getPrice() + "\t"); // flush data to the file and close the output stream out.close();
Descriptions:
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To write a character representation of a data type to an output stream, you use the print and println.
Warning:
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To prevent data from being lost, you should alwasy close the stream when you're done using it.
More info can be found here: http://www.j2ee.me/javase/6/docs/api/java/io/PrintWriter.html