CODEWITHSUNDEEP
javaiofilewriter
delo
delo

Reputation: 121

Writing to an already existing file using FileWriter Java

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

Upvotes: 10

Views: 27344

Answers (2)

Inv3r53
Inv3r53

Reputation: 2969

FileWriter

public FileWriter(File file,
                  boolean append)
           throws IOException

Constructs a FileWriter object given a File object. If the second argument is true, then bytes will be written to the end of the file rather than the beginning.

Upvotes: 7

Geo
Geo

Reputation: 96947

Yeah. Use the constructor like this:

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

Upvotes: 23

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