Fix #488.

Clean up the footer writer section of the preprocessor for easier reading but also fix adding and looking for --full-screen which appears to have been left off at some point.

java/test/processing/mode/java/ParserTests.java

@@ -11,8 +11,10 @@ import java.io.IOException;
 import java.util.Optional;
 
 import org.junit.BeforeClass;
+import org.junit.Before;
 import org.junit.Test;
 
+import processing.app.Preferences;
 import processing.app.SketchException;
 import processing.mode.java.preproc.PreprocessorResult;
 import processing.mode.java.preproc.PdePreprocessIssueException;
@@ -25,6 +27,11 @@ public class ParserTests {
     ProcessingTestUtil.init();
   }
 
+  @Before
+  public void before() {
+    Preferences.setBoolean("export.application.fullscreen", false);
+  }
+
   static void expectRecognitionException(final String id,
                                          final int expectedLine) {
 
@@ -432,7 +439,8 @@ public class ParserTests {
 
   @Test
   public void testMultiMultilineString() {
-    expectGood("multimultilinestr");
+    Preferences.setBoolean("export.application.fullscreen", true);
+    expectGood("fullscreen_export");
   }
 
 }