Writing to an already existing file using FileWriter Java

java io filewriter
delo picture delo · Jun 9, 2010 · Viewed 24.1k times · Source

Is there anyway I can write to an already existing file using Filewriter

For example when the user clicks a submit button:

FileWriter writer = new FileWriter("myfile.csv");
writer.append("LastName");
writer.append(',');
writer.append("FirstName");
writer.append('/n');

writer.append(LastNameTextField.getText());
writer.append(',');
writer.append(FirstNameTextField.getText());

I want to be able to write new data into the already existing myfile.csv without having to recreate a brand new one every time

Answer

Geo picture Geo · Jun 9, 2010

Yeah. Use the constructor like this:

FileWriter writer = new FileWriter("myfile.csv",true);

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