Why is there blank space in my window after using System.setProperty(\"apple.laf.useScreenMenuBar\", \"true\") on Mac OS X?

Troubleshooting the Mac OS X Screen Menu Bar

Problem:

Users encounter blank space in their window after moving the JMenuBar to the screen menu bar on Mac OS X using the property System.setProperty("apple.laf.useScreenMenuBar", "true").

Answer:

To overcome this issue, it's crucial to set the property at the appropriate launch time. Consider using the following approaches:

1. Launch Command: Set the property when launching your program using the following command:

java -Dapple.laf.useScreenMenuBar=true -jar MyApplication.jar

2. Info.plist Modification: Alternatively, modify your application bundle's Info.plist file by adding the following key-value pair:

<key>Properties</key>
<dict>
    <key>apple.laf.useScreenMenuBar</key>
    <string>true</string>
    ...
</dict>

Additional Note:

It's important to ensure that your implementation of DesktopMain is not the cause of the blank space issue. The example provided in the question suggests that DesktopMain may be missing.

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