diff --git a/murach/.idea/.gitignore b/murach/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/murach/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/murach/.idea/kotlinc.xml b/murach/.idea/kotlinc.xml
new file mode 100644
index 0000000..9d6ea82
--- /dev/null
+++ b/murach/.idea/kotlinc.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JsCompilerArguments">
+    <option name="moduleKind" value="plain" />
+  </component>
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+  <component name="KotlinCommonCompilerArguments">
+    <option name="apiVersion" value="2.0" />
+    <option name="languageVersion" value="2.0" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/murach/.idea/misc.xml b/murach/.idea/misc.xml
new file mode 100644
index 0000000..639900d
--- /dev/null
+++ b/murach/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/murach/.idea/modules.xml b/murach/.idea/modules.xml
new file mode 100644
index 0000000..3f876e2
--- /dev/null
+++ b/murach/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/murach.iml" filepath="$PROJECT_DIR$/.idea/murach.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/murach/.idea/murach.iml b/murach/.idea/murach.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/murach/.idea/murach.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/murach/.idea/vcs.xml b/murach/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/murach/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/murach/eclipse/ex_starts/ch02_ex2_TestScore/bin/TestScoreApp.class b/murach/eclipse/ex_starts/ch02_ex2_TestScore/bin/TestScoreApp.class
index 55b5df5..b679bd4 100644
Binary files a/murach/eclipse/ex_starts/ch02_ex2_TestScore/bin/TestScoreApp.class and b/murach/eclipse/ex_starts/ch02_ex2_TestScore/bin/TestScoreApp.class differ
diff --git a/murach/eclipse/ex_starts/ch02_ex2_TestScore/src/TestScoreApp.java b/murach/eclipse/ex_starts/ch02_ex2_TestScore/src/TestScoreApp.java
index 7d7b4ec..651c1bf 100644
--- a/murach/eclipse/ex_starts/ch02_ex2_TestScore/src/TestScoreApp.java
+++ b/murach/eclipse/ex_starts/ch02_ex2_TestScore/src/TestScoreApp.java
@@ -15,7 +15,7 @@ public class TestScoreApp {
         Scanner sc = new Scanner(System.in);
 
         // get a series of test scores from the user
-        while (testScore <= 100) {
+        while (testScore != 999) {
             // get the input from the user
             System.out.print("Enter score: ");
             String input = sc.nextLine();
@@ -24,12 +24,20 @@ public class TestScoreApp {
             // accumulate score count and score total
             if (testScore <= 100) {
                 scoreCount = scoreCount + 1;
-                scoreTotal = scoreTotal + testScore;
+                scoreTotal = scoreTotal + testScore;                	
+                }
+            else if (testScore >100) {
+            	System.out.println("Invalid entry; not counted.");
+            	continue;
+            	
             }
         }
 
         // display the score count, score total, and average score
-        double averageScore = (double) scoreTotal / scoreCount;
+        double averageScore = 0.0;
+        if(scoreCount > 0) {
+        	averageScore = (double) scoreTotal / scoreCount;
+        }
         String message = "\n"
                 + "Score count:   " + scoreCount + "\n"
                 + "Score total:   " + scoreTotal + "\n"