> Issue is observed in JTable demo in SwingSet2 whereby if we set the focus on > a table cell (or click on a table cell) and Press Ctrl+F1 (show/hide tooltip) > on a cell of JTable then NullpointerException is seen > >> Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: >> Cannot invoke "java.awt.event.MouseEvent.getLocationOnScreen()" because >> "this.mouseEvent" is null > > This is because ToolTip associated with JTable demo button at top of > SwingSet2 has MouseMotion Listener which causes [mouseEvent to be > null](https://github.com/openjdk/jdk/blame/da3001daf79bf943d6194d9fd60250d519b9680d/src/java.desktop/share/classes/javax/swing/ToolTipManager.java#L573) > when mouse exits the demo button area and enter the table cells area where > show/hide tooltip causes showTipWindow to be called trying to access > `mouseEvent` which is null. > Fix is made to check for null in this kind of cases..No regression test is > added as it can be checked easily with SwingSet2..
Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision: Copyright year update ------------- Changes: - all: https://git.openjdk.org/jdk/pull/19379/files - new: https://git.openjdk.org/jdk/pull/19379/files/2e9c2337..ae3cde25 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=19379&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19379&range=01-02 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/19379.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/19379/head:pull/19379 PR: https://git.openjdk.org/jdk/pull/19379
