diff --git a/java/src/processing/mode/java/ErrorChecker.java b/java/src/processing/mode/java/ErrorChecker.java
index 0a0510cde..77074c2ce 100644
--- a/java/src/processing/mode/java/ErrorChecker.java
+++ b/java/src/processing/mode/java/ErrorChecker.java
@@ -85,9 +85,9 @@ class ErrorChecker {
     Map<String, String[]> suggCache =
         JavaMode.importSuggestEnabled ? new HashMap<>() : Collections.emptyMap();
 
-    IProblem[] iproblems;
+    List<IProblem> iproblems;
     if (ps.compilationUnit == null) {
-      iproblems = new IProblem[0];
+      iproblems = new ArrayList<>();
     } else {
       iproblems = ps.iproblems;
     }
@@ -107,7 +107,7 @@ class ErrorChecker {
     if (problems.isEmpty()) {
       AtomicReference<ClassPath> searchClassPath = new AtomicReference<>(null);
 
-      List<Problem> cuProblems = Arrays.stream(iproblems)
+      List<Problem> cuProblems = iproblems.stream()
           // Filter Warnings if they are not enabled
           .filter(iproblem -> !(iproblem.isWarning() && !JavaMode.warningsEnabled))
           // Hide a useless error which is produced when a line ends with
diff --git a/java/src/processing/mode/java/PreprocSketch.java b/java/src/processing/mode/java/PreprocSketch.java
index e4ab92017..dbea88b6c 100644
--- a/java/src/processing/mode/java/PreprocSketch.java
+++ b/java/src/processing/mode/java/PreprocSketch.java
@@ -45,7 +45,7 @@ public class PreprocSketch {
   public final List<ImportStatement> coreAndDefaultImports;
   public final List<ImportStatement> codeFolderImports;
   public final List<Problem> otherProblems;
-  public final List<IProblems> iproblems;
+  public final List<IProblem> iproblems;
 
   public final Map<String, Integer> javaFileMapping;
 
@@ -74,19 +74,17 @@ public class PreprocSketch {
 
   public SketchInterval mapJavaToSketch(IProblem iproblem) {
     String originalFile = new String(iproblem.getOriginatingFileName());
-    System.out.println("here!!");
-    System.out.println(originalFile);
-    System.out.println(javaFileMapping.keySet());
-    System.out.println(iproblem);
     boolean isJavaFile = javaFileMapping.containsKey(originalFile);
 
     if (isJavaFile) {
+      System.out.println("**-**");
+      System.out.println(javaFileMapping.get(originalFile));
       return new SketchInterval(
           javaFileMapping.get(originalFile),
           iproblem.getSourceStart(),
           iproblem.getSourceEnd() + 1,
-          -1, // Is outside sketch code
-          -1  // Is outside sketch code
+          iproblem.getSourceStart(), // Is outside sketch code
+          iproblem.getSourceEnd() + 1  // Is outside sketch code
       );
     } else {
       return mapJavaToSketch(
@@ -236,7 +234,7 @@ public class PreprocSketch {
     public final List<ImportStatement> coreAndDefaultImports = new ArrayList<>();
     public final List<ImportStatement> codeFolderImports = new ArrayList<>();
     public final List<Problem> otherProblems = new ArrayList<>();
-    public List<IProblems> iproblems;
+    public List<IProblem> iproblems;
 
     public Map<String, Integer> javaFileMapping;