June 2018 Update

Task/Video-display-modes/Scala/video-display-modes.scala

@@ -0,0 +1,27 @@
+object VideoDisplayModes extends App {
+
+  import java.util.Scanner
+
+  def runSystemCommand(command: String) {
+    val proc = Runtime.getRuntime.exec(command)
+
+    val a: Unit = {
+      val a = new Scanner(proc.getInputStream)
+      while (a.hasNextLine) println(a.nextLine())
+    }
+    proc.waitFor()
+    println()
+  }
+
+  // query supported display modes
+  runSystemCommand("xrandr -q")
+  Thread.sleep(3000)
+
+  // change display mode to 1024x768 say (no text output)
+  runSystemCommand("xrandr -s 1024x768")
+  Thread.sleep(3000)
+
+  // change it back again to 1366x768 (or whatever is optimal for your system)
+  runSystemCommand("xrandr -s 1366x768")
+
+}