diff --git a/OOP/Java/Lab/Week1/HelloWorld.java b/OOP/Java/Lab/Week1/HelloWorld.java
new file mode 100644
index 0000000..8bf2e17
--- /dev/null
+++ b/OOP/Java/Lab/Week1/HelloWorld.java
@@ -0,0 +1,7 @@
+class HelloWorld
+{
+        public static void main(String args[])
+        {
+            System.out.println("Hello, World.");
+        }
+}
\ No newline at end of file
diff --git a/OOP/Java/Lab/Week1/OddNumbers.java b/OOP/Java/Lab/Week1/OddNumbers.java
new file mode 100644
index 0000000..5144604
--- /dev/null
+++ b/OOP/Java/Lab/Week1/OddNumbers.java
@@ -0,0 +1,18 @@
+class OddNumbers
+{
+        public static void main(String args[])
+        {
+            int a,i;
+
+            System.out.println("Odd Numbers List from 1 to 100.");   
+
+            for(i=1;i<=100;i++)
+            {
+                a = i;
+                if(i%2 != 0){
+                    System.out.println(+a);
+                }
+            }
+ 
+        }
+}
\ No newline at end of file