From a901403d9c335492f49c099bd0aeed5748b967b8 Mon Sep 17 00:00:00 2001
From: Arka Nath <natharka55@gmail.com>
Date: Thu, 21 Aug 2025 18:41:03 +0600
Subject: [PATCH 1/4] student.java added

---
 student.java | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 student.java

diff --git a/student.java b/student.java
new file mode 100644
index 000000000000..c6866790583e
--- /dev/null
+++ b/student.java
@@ -0,0 +1,17 @@
+public class Student {
+    private String name;
+    private int age;
+
+    public Student() {}
+
+    public Student(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public int getAge() { return age; }
+    public void setAge(int age) { this.age = age; }
+}

From 3cfe6f43e1450acace88a5df32c4a7d3bc2715e8 Mon Sep 17 00:00:00 2001
From: Arka Nath <natharka55@gmail.com>
Date: Thu, 21 Aug 2025 18:44:29 +0600
Subject: [PATCH 2/4] calcu.java added

---
 Calculator.java | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 Calculator.java

diff --git a/Calculator.java b/Calculator.java
new file mode 100644
index 000000000000..be83bb8f7714
--- /dev/null
+++ b/Calculator.java
@@ -0,0 +1,9 @@
+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 ArithmeticException("Divide by zero");
+        return (double) a / b;
+    }
+}

From a5d4253a31f3ad01bd9b0549b6ef4a6336145869 Mon Sep 17 00:00:00 2001
From: Arka Nath <natharka55@gmail.com>
Date: Thu, 21 Aug 2025 19:03:25 +0600
Subject: [PATCH 3/4] squareroot added

---
 Calculator.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Calculator.java b/Calculator.java
index be83bb8f7714..c5b823fefc62 100644
--- a/Calculator.java
+++ b/Calculator.java
@@ -6,4 +6,8 @@ public double divide(int a, int b) {
         if (b == 0) throw new ArithmeticException("Divide by zero");
         return (double) a / b;
     }
+    public double squareRoot(double number) {
+        if (number < 0) throw new IllegalArgumentException("Cannot calculate square root of negative number");
+        return Math.sqrt(number);
+    }
 }

From 12b72f4dc7350d6b63f0ac07429d03c61e3adf30 Mon Sep 17 00:00:00 2001
From: Arka Nath <natharka55@gmail.com>
Date: Thu, 21 Aug 2025 19:05:03 +0600
Subject: [PATCH 4/4] power added

---
 Calculator.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Calculator.java b/Calculator.java
index be83bb8f7714..529c798beae2 100644
--- a/Calculator.java
+++ b/Calculator.java
@@ -6,4 +6,7 @@ public double divide(int a, int b) {
         if (b == 0) throw new ArithmeticException("Divide by zero");
         return (double) a / b;
     }
+    public double power(double base, double exponent) {
+        return Math.pow(base, exponent);
+    }
 }