Minecraft java error

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https://bbs.archlinux.org – I've installed from AUR and everything seemingly went well, but when trying to execute, I only get this response:Exception in thread "main" java.awt.HeadlessException at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:197) at java.awt.Window.<init>(Window.java:534) at java.awt.Frame.<init>(Frame.java:420) at net.minecraft.LauncherFrame.<init>(LauncherFrame.java:27) at net.minecraft.LauncherFrame.main(LauncherFrame.java:158)jre7-openjdk installed.I've tried to search the forums and such, but while there are plenty of issues to go ar (HowTos)