nd4j-common/src/main/java/org/nd4j/util/StringUtils.java
public static String stringifyException(Throwable e) {
        StringWriter stm = new StringWriter();
        PrintWriter wrt = new PrintWriter(stm);
        e.printStackTrace(wrt);
        wrt.close();
        return stm.toString();
    }
public static String stringifyException(Throwable e) {
        StringWriter stm = new StringWriter();
        PrintWriter wrt = new PrintWriter(stm);
        e.printStackTrace(wrt);
        wrt.close();
        return stm.toString();
    }
Make a string representation of the exception.
@param e The exception to stringify
@return A string with exception name and call stack.