diff --git a/Java/Calculator.class b/Java/Calculator.class
new file mode 100644
index 00000000..5a4d17ac
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diff --git a/Java/Calculator.java b/Java/Calculator.java
new file mode 100644
index 00000000..d1027372
--- /dev/null
+++ b/Java/Calculator.java
@@ -0,0 +1,20 @@
+public class Calculator {
+    public int add(int a, int b) {
+        return a + b;
+    }
+
+    public int subtract(int a, int b) {
+        return a - b;
+    }
+
+    public int multiply(int a, int b) {
+        return a * b;
+    }
+    
+    public double divide(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Division by zero is not allowed.");
+        }
+        return (double) a / b;
+    }
+}
\ No newline at end of file
diff --git a/Java/Student.class b/Java/Student.class
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index 00000000..b08a7520
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diff --git a/Java/Student.java b/Java/Student.java
new file mode 100644
index 00000000..846580ed
--- /dev/null
+++ b/Java/Student.java
@@ -0,0 +1,17 @@
+public class Student {
+    private String name;
+    private int roll;
+
+    Student(String name, int roll) {
+        this.name = name;
+        this.roll = roll;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getRoll() {
+        return roll;
+    }
+}
\ No newline at end of file
diff --git a/Java/main.class b/Java/main.class
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diff --git a/Java/main.java b/Java/main.java
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index 00000000..4b1554c3
--- /dev/null
+++ b/Java/main.java
@@ -0,0 +1,13 @@
+public class main {
+    public static void main(String[] args) {
+        Student student = new Student("Alice", 101);
+        System.out.println("Name: " + student.getName());
+        System.out.println("Roll: " + student.getRoll());
+
+        Calculator calculator = new Calculator();
+        System.out.println("Addition: " + calculator.add(5, 3));
+        System.out.println("Subtraction: " + calculator.subtract(5, 3));
+        System.out.println("Multiplication: " + calculator.multiply(5, 3));
+        System.out.println("Division: " + calculator.divide(5, 3));
+    }
+}
\ No newline at end of file