how to Print Exception in txt file in java

Question

public class myclass
{
    // Main method
    public static void main (String args[])
    {
        // Stream to write file
 try {
    int a=100;
     int b=a/0;
    System.out.println(b);
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}       


    }   
}

This my code i want to Print what Evre Exception is coming in E:\logfile.txt. please help me i am Unable to do this .

Is there any reason why you don't want to use some logging framework, e.g. Log4j? — lifus, Aug 02 '13 at 08:39
actully i have to Upload on server and what Ever Exception will come need to collect in .txt file in E:\\log.txt — Anil Kumar, Aug 02 '13 at 08:41
@AnilKumar That is what a logging library does and rewriting one is probably going to be a waste of time. — assylias, Aug 02 '13 at 08:42

score 4 · Answer 1 · answered Aug 02 '13 at 08:40

4

Use the printStackTrace() overload which takes a PrintStream parameter:

http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html#printStackTrace(java.io.PrintStream)

Alternatively, use a logging framework, such as log4j.

answered Aug 02 '13 at 08:40

Andreas Fester

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score 0 · Answer 2 · answered Aug 02 '13 at 08:52

You can write a static method of a class for this.

public class Logbook {

    // path to logbook
    private String path = "E:\logfile.txt";

    // static method
    public static boolean Log(String message) {
        try {
            File f = new File(path);
            // append the text file
            FileWriter fileWriter = new FileWriter(file,true);

            // append text to file by using a buffer
            BufferedWriter bw  = new BufferedWriter(fileWriter);
            fileWriter.append(message);

            // close buffer
            bufferFileWriter.close();

            // tell that it has succeed
            return true;
        }
        catch (Exception e) {
            return false;
        }
    }

and to log the message,

catch (Exception e) {
    // log file
    if (Logbook.Log(e.getMessage())) System.out.println("Error caught and got logged");
    else System.out.println("Error caught but logging has failed");
}

how to Print Exception in txt file in java

2 Answers2