@@ -0,0 +1,589 @@
+public class StackTrace %7B%0A    private StackTraceElement%5B%5D stackTraceElements;%0A%0A    public StackTrace(StackTraceElement%5B%5D stackTraceElements)%7B%0A        this.stackTraceElements = stackTraceElements;%0A    %7D%0A    public String toString()%7B%0A        String trace = %22%22;%0A        if (this.stackTraceElements.length %3E 0) %7B%0A            for (StackTraceElement element: this.stackTraceElements)%0A                trace.concat(%22%5BStackTraceElement%5D %5BCLASS= %22 +element.getClassName()+ %22%5D %5BMETHOD= %22 +element.getMethodName()+ %22%5D %5BLINE= %22 +element.getLineNumber()+ %22%5D%5Cn%22);%0A        %7D%0A        return trace;%0A    %7D%0A%7D%0A

Create SackTrace.java