Solve 96 using my Sudoku solver from college

other/sudoku.java

@@ -34,6 +34,40 @@ class Sudoku {
     System.out.println(fieldOut);
   }
 
+  int getThreeDigits() {
+    int i = 0;
+    i += fieldValues[2];
+    i += fieldValues[1] * 10;
+    i += fieldValues[0] * 100;
+    return i;
+  }
+
+  void loadFieldFromScanner(Scanner s) throws Exception {
+    int currentField = 0;
+
+    if (!s.hasNextLine()) {
+      throw new Exception("No lines to read");
+    }
+
+    if (!s.nextLine().startsWith("Grid")) {
+      throw new Exception("Not at start of grid");
+    }
+
+    while (s.hasNextLine()) {
+      String line = s.nextLine();
+      for (int i = 0; i < line.length(); i++) {
+        int v = line.charAt(i) - (int) '0';
+        fieldValues[currentField] = v;
+        currentField += 1;
+      }
+      if (currentField == 81) {
+        break;
+      }
+    }
+
+    return;
+  }
+
   /** Function asks for an file name which
    * should contain a sudoku and this sudoku
    * into fieldValues, Empty fields should
@@ -131,20 +165,5 @@ class Sudoku {
 
     return false;
   }
-
 }
 
-/** This class is to test the
- * Sudoku class and it's functions
- */
-class SudokuDemo {
-  public static void main(String[] args) {
-    System.out.println("Sudoku demo loading...");
-    Sudoku s = new Sudoku();
-    s.loadFieldFromFile();
-    s.printField();
-    //s.testAllowed();
-    s.solveSudoku();
-    s.printField();
-  }
-}