From f03de6c5bff77149ef2200a1eb5603f4e260c86d Mon Sep 17 00:00:00 2001
From: Akash Biswas <akash41bt@gmail.com>
Date: Sat, 20 Sep 2025 14:51:56 +0600
Subject: [PATCH 1/3] add student.java file

---
 Student.java | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Student.java

diff --git a/Student.java b/Student.java
new file mode 100644
index 000000000000..f983eb8a3cfe
--- /dev/null
+++ b/Student.java
@@ -0,0 +1,21 @@
+public class Student{
+    private String name;
+    private int id;
+
+    public Student(String name, int id){
+        this.name = name;
+        this.id = id;
+    }
+    public String getName(){
+        return name;
+    }
+    public int getId(){
+        return id;
+    }
+    public void setName(String name){
+        this.name = name;
+    }
+    public void setId(int id){
+        this.id = id;
+    }
+}
\ No newline at end of file

From 48b8cc88e6f62fd05579e8740e641d576e8e05b7 Mon Sep 17 00:00:00 2001
From: Akash Biswas <akash41bt@gmail.com>
Date: Sat, 20 Sep 2025 14:59:41 +0600
Subject: [PATCH 2/3] add cal.java file

---
 Calculator.java | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Calculator.java

diff --git a/Calculator.java b/Calculator.java
new file mode 100644
index 000000000000..9722ded77001
--- /dev/null
+++ b/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;
+    }   
+}

From cebd3e40c1005d936ef8734e432b0a92b571d4b8 Mon Sep 17 00:00:00 2001
From: Akash Biswas <akash41bt@gmail.com>
Date: Sat, 20 Sep 2025 15:21:27 +0600
Subject: [PATCH 3/3] modified f/c

---
 Calculator.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Calculator.java b/Calculator.java
index 9722ded77001..29dd75553006 100644
--- a/Calculator.java
+++ b/Calculator.java
@@ -13,7 +13,7 @@ public int multiply(int a, int b) {
 
     public double divide(int a, int b) {
         if (b == 0) {
-            throw new IllegalArgumentException("Division by zero is not allowed.");
+            throw new IllegalArgumentException("Division by zero is not allowed.b can't be zero.");
         }
         return (double) a / b;
     }