Example: Convert stack trace to a string

1. import java.io.PrintWriter;
2. import java.io.StringWriter;
4. public class PrintStackTrace {
6. public static void main(String[] args) {
8. try {
9. int division = 0 / 0;
10. } catch (ArithmeticException e) {
11. StringWriter sw = new StringWriter();
12. e.printStackTrace(new PrintWriter(sw));
13. String exceptionAsString = sw.toString();
14. System.out.println(exceptionAsString);
15. }
16. }
17. }

When you run the program, the output will be something similar:

java.lang.ArithmeticException: / by zero
    at PrintStackTrace.main(PrintStackTrace.java:9)

In the above program, we’ve forced our program to throw ArithmeticException by dividing 0 by 0.

In the catch block, we use StringWriter and PrintWriter to print any given output to a string. We then print the stack trace using printStackTrace() method of the exception and write it in the writer.

Then, we simply convert it to string using toString() method.