我正试图通过以下方式致电showSaveDialog：
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle(title);
return fileChooser.showSaveDialog(null);
但是整个程序中止了以下输出：
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f7d783e3500, pid=22008, tid=140176664483584
#
# JRE version: Java(TM) SE Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libgdk-x11-2.0.so.0+0x6a500] gdk_window_set_geometry_hints+0x0
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/sk_/projects/mjolnirr/hs_err_pid22008.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
我怎样才能让它发挥作用？