diff --git a/.idea/misc.xml b/.idea/misc.xml
index 639900d..3343960 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21 (2)" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
index 54db2d4..3ca7a21 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -2,6 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
+      <module fileurl="file://$PROJECT_DIR$/Error images/Error images.iml" filepath="$PROJECT_DIR$/Error images/Error images.iml" />
       <module fileurl="file://$PROJECT_DIR$/Java-Lab-003.iml" filepath="$PROJECT_DIR$/Java-Lab-003.iml" />
     </modules>
   </component>
diff --git a/Java-Lab-003.iml b/Java-Lab-003.iml
index b46c0dd..18a3d6a 100644
--- a/Java-Lab-003.iml
+++ b/Java-Lab-003.iml
@@ -5,6 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
+    <orderEntry type="jdk" jdkName="openjdk-21" jdkType="JavaSDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/src/.gitkeep b/src/.gitkeep
index 8b13789..e74f8c0 100644
--- a/src/.gitkeep
+++ b/src/.gitkeep
@@ -1 +1,7 @@
+public class TempConvert {
 
+    public static void main(String[] args) {
+        int = 12;
+        System.out.printf("%f int");
+    }
+}
diff --git a/src/TempConvert.java b/src/TempConvert.java
new file mode 100644
index 0000000..35019b5
--- /dev/null
+++ b/src/TempConvert.java
@@ -0,0 +1,49 @@
+/**
+ * @author Jenny Li
+ * @ Version 1.0
+ * 2/3/24
+ */
+
+public class TempConvert {
+    public static void main(String[] args) {
+        int y;
+        y = 12;
+        double pi = 12;
+        System.out.printf("%d seconds  %f seconds",y,pi);
+    }
+}
+
+/**
+ import java.util.Scanner;
+public class TempConvert {
+    public static void main (String args[]) {
+    double fahrenheit, celsius;
+    Scanner in = new Scanner(System.in);
+    System.out.print("Enter a temperature in Celsius: ");
+    celsius = in.nextDouble();
+    fahrenheit = ((celsius * (9/5)) + 32);
+    System.out.println(celsius = fahrenheit);
+
+    }
+}
+**/
+
+/**
+import java.util.Scanner;
+
+public class TempConvert {
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+
+        System.out.print("Enter a total number of seconds: ");
+        int seconds = input.nextInt();
+
+        int hour= seconds/3600;
+        int second = seconds%60;
+        seconds=seconds%3600;
+        int min=seconds/60;
+
+        System.out.printf( seconds + "seconds = " + "%d hours, %d minutes, %d seconds", hour,min,second);
+    }
+}
+**/
\ No newline at end of file
diff --git a/src/error001.png b/src/error001.png
new file mode 100644
index 0000000..8caa2ff
Binary files /dev/null and b/src/error001.png differ
diff --git a/src/error002.png b/src/error002.png
new file mode 100644
index 0000000..41fb514
Binary files /dev/null and b/src/error002.png differ
diff --git a/src/error003.png b/src/error003.png
new file mode 100644
index 0000000..29849bf
Binary files /dev/null and b/src/error003.png differ