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https://issues.apache.org/jira/browse/NETBEANS-19?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anton V. Kirilchik reassigned NETBEANS-19:
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Assignee: Anton V. Kirilchik
> GUI Designer + Maven: icons imported in the wrong directory
> -----------------------------------------------------------
>
> Key: NETBEANS-19
> URL: https://issues.apache.org/jira/browse/NETBEANS-19
> Project: NetBeans
> Issue Type: Bug
> Components: apisupport - Maven, guibuilder - Code
> Affects Versions: 8.2, 9.0
> Environment: Windows 7 Professional
> JDK 1.8.0_111-b14
> Maven 3.3.3
> Reporter: Jean-François El Fouly
> Assignee: Anton V. Kirilchik
> Priority: Minor
>
> An annoying and tricky little bug.
> h1. Nominal scenario (NetBeans non-Maven project)
> # File > New Project...
> # Java | Java application (You could uncheck Create Main Class)
> # New > JFrame Form...
> # In the designer drag a JLabel
> # For the icon property click "..."
> # Click Import to Project...
> # Choose an icon then Finish
> # The icon is copied along the java source file
> # Run
> # Everybody happy. It works
> h1. Maven project
> # File > New Project...
> # Maven | Java application
> # New > JFrame Form... (Default values OK)
> # In the designer drag a JLabel
> # For the icon property click "..."
> # Click Import to Project...
> # Choose an icon then Finish
> # The icon is copied along the java source file
> # Run
> # It crashes with a NullPointerException
> h2. Manual remediation
> # In the project create src/main/resources
> # Move the icon to this directory (same package as it was under src/main/java)
> # NetBeans detects this and adds "Other Sources" to the project tree
> # mvn clean (to force rebuild)
> # Now it works
> h1. Rationale
> Importing an icon and associating to a JLabel generates code such as this:
> bq. jLabel1.setIcon(new
> javax.swing.ImageIcon(getClass().getResource("/test/mavenproject1/bookmark.png")));
> // NOI18N
> But the maven compiler plugin will not copy the icon to target/classes so
> target/classes contains the classes but not the image. So the code above
> causes a NPE.
> h2.Bottom line
> In a Maven project icons should not be imported to src/main/java but to
> src/main/resources, same package.
> This small but annoying bug is not a regression: it can easily be reproduced
> in 8.2
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