Example: Convert stack trace to a string
import java.io.PrintWriter; import java.io.StringWriter; public class PrintStackTrace { public static void main(String[] args) { try { int division = 0 / 0; } catch (ArithmeticException e) { StringWriter sw = new StringWriter(); e.printStackTrace(new PrintWriter(sw)); String exceptionAsString = sw.toString(); System.out.println(exceptionAsString); } } } Output
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.