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What determines the order items appear in java.awt.PopupMenu?

I thought it was the order they were added but for some odd reason, the "Exit" item appears above the submenu. Here is my code: 

gram._ni.setPopupMenu(new PopupMenu());
gram._ni.getPopupMenu().add("Re-Read");
gram._ni.getPopupMenu().add("Pronunciations");
gram._ni.getPopupMenu().add("Pause");
gram._ni.getPopupMenu().add("Stop");
gram._ni.getPopupMenu().add(gram._voiceMenu);
gram._ni.getPopupMenu().add("Exit");

_ni is a TrayIcon. (used to be a "NotifyIcon" when this was a C#.Net program) gram is an instance of the "Program" class that contains my main method.

vcr says ha can not reproduce this problem, so here is my system info:

OpenJDK version "1.8.0_121" OpenJDK Runtime Environment (build 1.8.0_121-b14) OpenJDK 64-Bit Server VM (build 25.121-b14, mixed mode) Fedora Core 24, kernel 4.9.13-100.fc24.x86_64 Xfce 4.12

Solution

  • It turns out I had another one of these later in my code: 

     gram._ni.getPopupMenu().add(gram._voiceMenu);

    I did not notice since, adding the same object will move the object rather than add a duplicate.