/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
 
	private static String convertStackTrace(Throwable throwable) {
	    try (StringWriter sw = new StringWriter();
	             PrintWriter pw = new PrintWriter(sw)) {
	        throwable.printStackTrace(pw);
	        return sw.toString();
	    } catch (IOException ioe) {
	        // this can never really happen..... as a result,
	        // just convert to a Runtime exception
	        throw new IllegalStateException(ioe);
	    }
	}	
 
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(convertStackTrace(new IllegalStateException("boo")));
	}
}

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