RFR: 6616245: NullPointerException when using JFileChooser with a custom FileView [v7]

[Abhishek Kumar]

On Tue, 11 Oct 2022 04:54:14 GMT, Tejesh R <tr at openjdk.org> wrote:

>> When a custom `FileView` is used and folder traversal is restricted to a particular directory NPE occurs when user tries to traverse/select other folders except traversable folder. This is caused because when user selects folder other than traversable, the traversal is rejected and hence no file is selected as `currentDirectory` of `JFileChooser`. When user tries to access the restricted folder second time, previous selected file check is failing because of NPE since `getFileChooser().getCurrentDirectory();` is null. To fix the issue, NPE check is added.
>
> Tejesh R has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updated based on review comments

test/jdk/javax/swing/JFileChooser/FileViewNPETest.java line 80:

> 78:                 """;
> 79:         frame = new JFrame("JFileChooser File View NPE test");
> 80:         passFailJFrame = new PassFailJFrame("Test Instructions", INSTRUCTIONS, 5L, 13, 40);

Few lines are going beyond 80 columns, can you please update them?

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PR: https://git.openjdk.org/jdk/pull/10485