HOW TO WRITE TEXT FILE JAVA

Chintoo Semi

Total Post:135

Points:947
Posted by  Chintoo Semi
Java 
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The following code does not produce a file (I can't see the file anywhere). What is missing?

try
{
    //create a temporary file
    String timeLog = new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime());
    File logFile=new File(timeLog);
 
    BufferedWriter writer = new BufferedWriter(new FileWriter(logFile));
    writer.write (string);
 
    //Close writer
    writer.close();
} catch(Exception e)
{
    e.printStackTrace();
}
  1. jacob rasel

    Post:88

    Points:616
    Re: How to Write text file Java

    I think your expectations and reality don't match (but when do they ever ;))

    Basically, where you think the file is been written and where the file is actually been written are not equal (hmmm, perhaps I should write and if statement ;))

    public class TestWriteFile {
        public static void main(String[] args) {
            BufferedWriter writer = null;
            try {
                //create a temporary file
                String timeLog = new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime());
                File logFile = new File(timeLog);
                // This will output the full path where the file will be written to...
                System.out.println(logFile.getCanonicalPath());
                writer = new BufferedWriter(new FileWriter(logFile));
                writer.write("Hello world!");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    // Close the writer regardless of what happens...
                    writer.close();
                } catch (Exception e) {
                }
            }
        }
    }

    Also note that your example will override any existing files. If you want to append the text to the file you should...

    writer = new BufferedWriter(new FileWriter(logFile, true));

    Instead...

      Modified On Mar-15-2016 05:48:56 AM

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