Thread.currentThread().getStackTrace();

new Throwable().getStackTrace();

Thread.currentThread().getStackTrace();

StringWriter sw = new StringWriter();
new Throwable("").printStackTrace(new PrintWriter(sw));
String stackTrace = sw.toString();

try {
}
catch(Exception e) {
    StackTraceElement[] traceElements = e.getStackTrace();
    //...
}

Thread.currentThread().getStackTrace()

ThreadMXBean bean = ManagementFactory.getThreadMXBean();
ThreadInfo[] infos = bean.dumpAllThreads(true, true);

for (ThreadInfo info : infos) {
  StackTraceElement[] elems = info.getStackTrace();
  // Print out elements, etc.
}

for( StackTraceElement ste : Thread.currentThread().getStackTrace() ) {
 System.out.println( ste + "n" );
}