Mimic printStackTrace() method in java [closed]

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My question Is there is any way to implement a method that works like the printStackTrace() I don't know how to start doing this indeed , Is that possible ? Is getStackTrace() is a good choice for me.

Answer 1

Here is the official way how it is done (grepcode format):

646  private void printStackTrace(PrintStreamOrWriter s) {
647      // Guard against malicious overrides of Throwable.equals by
648      // using a Set with identity equality semantics.
649      Set<Throwable> dejaVu =
650          Collections.newSetFromMap(new IdentityHashMap<Throwable, Boolean>());
651      dejaVu.add(this);
653      synchronized (s.lock()) {
654          // Print our stack trace
655          s.println(this);
656          StackTraceElement[] trace = getOurStackTrace();
657          for (StackTraceElement traceElement : trace)
658              s.println("\tat " + traceElement);
660          // Print suppressed exceptions, if any
661          for (Throwable se : getSuppressed())
662              se.printEnclosedStackTrace(s, trace, SUPPRESSED_CAPTION, "\t", dejaVu);
664          // Print cause, if any
665          Throwable ourCause = getCause();
666          if (ourCause != null)
667              ourCause.printEnclosedStackTrace(s, trace, CAUSE_CAPTION, "", dejaVu);
668      }
669  }

A bit more concerns are handled than you would anticipate, but you can easily remove any you don't care about.

Answer 2

If you want to get the stack trace for any moment, you could try this:

Thread.currentThread().getStackTrace();// this return an array of StackTraceElement loop over in order to print them.

or if you just want to get the stack trace in case exception, just use ExceptionUtils from apache common libraries.

ExceptionUtils.getFullStackTrace(ex);

Answer 3

You can do it with the help of Throwable class. See the code below:
The method return the stacktrace.

public String tracePoint()
{
    String trace = "";
    Throwable t = new Throwable();
    StackTraceElement[] s = t.getStackTrace();
    for(int i=0; i<s.length; i++)
    {
        trace += s[i] + "\n";
    }
    return trace;
}