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README.md

@@ -1,3 +1,5 @@
+[![Review Assignment Due Date](https://classroom.github.com/assets/deadline-readme-button-22041afd0340ce965d47ae6ef1cefeee28c7c493a6346c4f15d667ab976d596c.svg)](https://classroom.github.com/a/ty2f_0nx)
+
 # Java-Task1 — Introductory Java Exercises
 
 This repository contains three beginner-friendly Java exercises built around the following topics:
@@ -81,4 +83,4 @@ java q3
 - Basic understanding of command line/terminal usage
 - Text editor (VSCode Recommended) or IDE (IntelliJ IDEA recommended)
 
-Proceed to the `q1/`, `q2/`, and `q3/` folders and complete the exercises in order.
+Proceed to the `q1/`, `q2/`, and `q3/` folders and complete the exercises in order.

q1/README.md

@@ -3,6 +3,7 @@
 ## Objective
 
 Complete the fill-in-the-blanks exercise in `q1.java` to demonstrate understanding of:
+
 - Basic Java program structure
 - Variable declarations and initialization
 - Data types (int, double, char, boolean, String)
@@ -74,4 +75,4 @@ java q1
 - [ ] All variables are properly declared and initialized
 - [ ] Output matches the expected format exactly
 - [ ] Proper use of Java naming conventions
-- [ ] All "FILL HERE" comments are replaced with appropriate code
+- [ ] All "FILL HERE" comments are replaced with appropriate code

q1/q1.java

@@ -1,47 +1,31 @@
 // FILL HERE: Import the necessary package for input operations
 
-
 // FILL HERE: Write the class declaration with proper naming convention
-{
+public class q1 {
+
     // FILL HERE: Write the main method signature
-    {
+    public static void main(String[] args) {
         // Variable declarations and initialization
-        // FILL HERE: Declare an integer variable named 'age' and initialize it to 25
-
-        // FILL HERE: Declare a double variable named 'height' and initialize it to 5.8
-
-        // FILL HERE: Declare a char variable named 'grade' and initialize it to 'A'
-
-        // FILL HERE: Declare a boolean variable named 'isStudent' and initialize it to true
-
-        // FILL HERE: Declare a String variable named 'name' and initialize it to "John Doe"
-
-
+        int age = 25;
+        double height = 5.8;
+        char grade = 'A';
+        boolean isStudent = true;
+        String name = "John Doe";
+
         // Output statements
         System.out.println("=== Student Information ===");
-
-        // FILL HERE: Print the name using System.out.println
-
-        // FILL HERE: Print the age using System.out.println (format: "Age: 25")
-
-        // FILL HERE: Print the height using System.out.println (format: "Height: 5.8 feet")
-
-        // FILL HERE: Print the grade using System.out.println (format: "Grade: A")
-
-        // FILL HERE: Print the student status using System.out.println (format: "Is Student: true")
-
-
+        System.out.println("Name: " + name);
+        System.out.println("Age: " + age);
+        System.out.println("Height: " + height);
+        System.out.println("Grade: " + grade);
+        System.out.println("Is Student: " + isStudent);
+
         // Data type demonstration
         System.out.println("\n=== Data Type Information ===");
-
-        // FILL HERE: Print the data type of age variable (hint: use "int")
-
-        // FILL HERE: Print the data type of height variable (hint: use "double")
-
-        // FILL HERE: Print the data type of grade variable (hint: use "char")
-
-        // FILL HERE: Print the data type of isStudent variable (hint: use "boolean")
-
-        // FILL HERE: Print the data type of name variable (hint: use "String")
+        System.out.println("age is of type: int");
+        System.out.println("height is of type: double");
+        System.out.println("grade is of type: char");
+        System.out.println("isStudent is of type: boolean");
+        System.out.println("name is of type: String");
     }
 }

q2/README.md

@@ -3,8 +3,9 @@
 ## Objective
 
 Write a complete Java program that demonstrates:
+
 - Getting user input using Scanner
-- Arithmetic operators (+, -, *, /, %)
+- Arithmetic operators (+, -, \*, /, %)
 - Relational operators (>, <, >=, <=, ==, !=)
 - Logical operators (&&, ||, !)
 - Basic expressions and calculations
@@ -28,7 +29,7 @@ Your program should:
 6. **Perform** and display the following calculations:
    - Addition (num1 + num2)
    - Subtraction (num1 - num2)
-   - Multiplication (num1 * num2)
+   - Multiplication (num1 \* num2)
    - Division (num1 / num2)
    - Modulus (num1 % num2) - only if both numbers are integers
 7. **Demonstrate** relational operators by comparing the two numbers
@@ -37,12 +38,14 @@ Your program should:
 ## Sample Input/Output
 
 **Input:**
+
 ```
 Enter first number: 15
 Enter second number: 4
 ```
 
 **Expected Output:**
+
 ```
 === Calculator Results ===
 First Number: 15.0
@@ -72,20 +75,24 @@ Modulus: 15 % 4 = 3
 ## Implementation Hints
 
 1. **Scanner Setup:**
+
    ```java
    Scanner scanner = new Scanner(System.in);
    ```
 
 2. **Reading Input:**
+
    ```java
    System.out.print("Enter first number: ");
    double num1 = scanner.nextDouble();
    ```
 
 3. **Modulus Operation:**
+
    - Convert doubles to integers for modulus: `(int)num1 % (int)num2`
 
 4. **Formatting Output:**
+
    - Use `System.out.println()` for formatted output
    - Show operations in the format: `operand1 operator operand2 = result`
 
@@ -117,6 +124,7 @@ java q2
 ## Additional Challenge (Optional)
 
 If you finish early, try adding:
+
 - Input validation (handle invalid input)
 - Division by zero checking
-- More complex expressions combining multiple operators
+- More complex expressions combining multiple operators

q2/q2.java

@@ -9,4 +9,51 @@
 // 5. Perform arithmetic operations and display results
 // 6. Demonstrate different types of operators (arithmetic, relational, logical)
 
-// Write your complete solution below:
+// Write your complete solution below:
+
+import java.util.Scanner;
+
+public class q2 {
+
+    public static void main(String[] args) {
+
+        // initialized scanner variable from scanner class
+        Scanner input = new Scanner(System.in);
+        // Taking input using scanner class
+        System.out.print("Enter first number: ");
+        double num1 = input.nextDouble();
+        System.out.print("Enter second number: ");
+        double num2 = input.nextDouble();
+
+        System.out.println("\n~~~~~~~~~~~~ Arithmetic Operations ~~~~~~~~~~~~");
+        System.out.println("Addition: " + num1 + " + " + num2 + " = " + (num1 + num2));
+        System.out.println("Subtraction: " + num1 + " - " + num2 + " = " + (num1 - num2));
+        System.out.println("Multiplication: " + num1 + " * " + num2 + " = " + (num1 * num2));
+        System.out.println("Division: " + num1 + " / " + num2 + " = " + (num1 / num2));
+        System.out.println("Modulus: " + (int) num1 + " % " + (int) num2 + " = " + ((int) num1 % (int) num2));
+
+        boolean greater = num1 > num2;
+        boolean less = num1 < num2;
+        boolean greaterEqual = num1 >= num2;
+        boolean lessEqual = num1 <= num2;
+        boolean equal = num1 == num2;
+        boolean notEqual = num1 != num2;
+
+        System.out.println("\n~~~~~~~~~~~~ Relational Operations ~~~~~~~~~~~~");
+        System.out.println(num1 + " > " + num2 + ": " + greater);
+        System.out.println(num1 + " < " + num2 + ": " + less);
+        System.out.println(num1 + " >= " + num2 + ": " + greaterEqual);
+        System.out.println(num1 + " <= " + num2 + ": " + lessEqual);
+        System.out.println(num1 + " == " + num2 + ": " + equal);
+        System.out.println(num1 + " != " + num2 + ": " + notEqual);
+
+        // Logical Operations
+        System.out.println("\n=== Logical Operations ===");
+        System.out.println("(" + num1 + " > " + num2 + ") && (" + num1 + " != " + num2 + "): " + (greater && notEqual));
+        System.out.println("(" + num1 + " < " + num2 + ") || (" + num1 + " == " + num2 + "): " + (less || equal));
+        System.out.println("!(" + num1 + " == " + num2 + "): " + (!equal));
+
+        input.close();
+    }
+
+}

q3/q3.java

@@ -1,126 +1,87 @@
 // q3.java - Literals, Increment/Decrement Operators, and Expressions Demo
 // Complete the fill-in-the-blanks to demonstrate various Java concepts
-
 public class q3 {
     public static void main(String[] args) {
         System.out.println("=== Java Literals and Operators Demo ===\n");
-        
+
         // Part 1: Different types of literals
         System.out.println("=== Part 1: Literals Demo ===");
-
-        // FILL HERE: Create an integer literal variable 'decimal' with value 42
-        int decimal = 0; // Replace 0 with correct value
-
-        // FILL HERE: Create a binary literal variable 'binary' with value 0b101010 (which is 42 in decimal)
-        int binary = 0; // Replace 0 with correct binary literal
-
-        // FILL HERE: Create an octal literal variable 'octal' with value 052 (which is 42 in decimal)  
-        int octal = 0; // Replace 0 with correct octal literal
-
-        // FILL HERE: Create a hexadecimal literal variable 'hex' with value 0x2A (which is 42 in decimal)
-        int hex = 0; // Replace 0 with correct hexadecimal literal
-
+
+        int decimal = 42;
+        int binary = 0b101010;
+        int octal = 052;
+        int hex = 0x2A;
+
         System.out.println("Decimal literal: " + decimal);
         System.out.println("Binary literal: " + binary);
         System.out.println("Octal literal: " + octal);
         System.out.println("Hexadecimal literal: " + hex);
-
-        // FILL HERE: Create a float literal variable 'floatNum' with value 3.14f
-        float floatNum = 0.0f; // Replace with correct value
-
-        // FILL HERE: Create a double literal variable 'doubleNum' with value 2.718281828
-        double doubleNum = 0.0; // Replace with correct value
-
+
+        float floatNum = 3.14f;
+        double doubleNum = 2.718281828;
+
         System.out.println("Float literal: " + floatNum);
         System.out.println("Double literal: " + doubleNum);
-
-        // FILL HERE: Create a char literal variable 'letter' with value 'A'
-        char letter = ' '; // Replace with correct character
-
-        // FILL HERE: Create a char literal variable 'unicodeChar' with value '\u0041' (which is 'A')
-        char unicodeChar = ' '; // Replace with correct unicode character
-
+
+        char letter = 'A';
+        char unicodeChar = '\u0041';
+
         System.out.println("Character literal: " + letter);
         System.out.println("Unicode character: " + unicodeChar);
-
-        // FILL HERE: Create a boolean literal variable 'isTrue' with value true
-        boolean isTrue = false; // Replace with correct value
-
-        // FILL HERE: Create a String literal variable 'message' with value "Hello, Java!"
-        String message = ""; // Replace with correct string
-
+
+        boolean isTrue = true;
+        String message = "Hello, Java!";
+
         System.out.println("Boolean literal: " + isTrue);
         System.out.println("String literal: " + message);
-        
+
         System.out.println("\n=== Part 2: Increment/Decrement Operators ===");
-
-        // FILL HERE: Create an integer variable 'counter' with initial value 10
-        int counter = 0; // Replace with correct initial value
-
+
+        int counter = 10;
         System.out.println("Initial counter value: " + counter);
-
-        // FILL HERE: Use post-increment (counter++) in the println statement
-        System.out.println("Post-increment (counter++): " + counter); // Add post-increment operation
+
+        System.out.println("Post-increment (counter++): " + counter++);
         System.out.println("Counter after post-increment: " + counter);
-
-        // FILL HERE: Use pre-increment (++counter) in the println statement  
-        System.out.println("Pre-increment (++counter): " + counter); // Add pre-increment operation
+
+        System.out.println("Pre-increment (++counter): " + ++counter);
         System.out.println("Counter after pre-increment: " + counter);
-
-        // FILL HERE: Use post-decrement (counter--) in the println statement
-        System.out.println("Post-decrement (counter--): " + counter); // Add post-decrement operation
+
+        System.out.println("Post-decrement (counter--): " + counter--);
         System.out.println("Counter after post-decrement: " + counter);
-
-        // FILL HERE: Use pre-decrement (--counter) in the println statement
-        System.out.println("Pre-decrement (--counter): " + counter); // Add pre-decrement operation
+
+        System.out.println("Pre-decrement (--counter): " + --counter);
         System.out.println("Counter after pre-decrement: " + counter);
-        
+
         System.out.println("\n=== Part 3: Data Type of Expressions ===");
-
-        // Variables for expression demonstrations
+
         int intVar = 5;
         double doubleVar = 2.5;
         float floatVar = 1.5f;
         char charVar = 'B';
-
-        // Expression 1: int + int
-        // FILL HERE: Create a variable 'result1' that stores intVar + 3 (determine the correct data type)
-        int result1 = 0; // Replace with correct expression and fix data type if needed
-
+
+        int result1 = intVar + 3;
+        double result2 = intVar + doubleVar;
+        double result3 = floatVar + doubleVar;
+        int result4 = charVar + intVar;
+
         System.out.println("int + int = " + result1 + " (Type: int)");
-
-        // Expression 2: int + double  
-        // FILL HERE: Create a variable 'result2' that stores intVar + doubleVar (determine the correct data type)
-        double result2 = 0.0; // Replace with correct expression and fix data type if needed
-
         System.out.println("int + double = " + result2 + " (Type: double)");
-
-        // Expression 3: float + double
-        // FILL HERE: Create a variable 'result3' that stores floatVar + doubleVar (determine the correct data type)
-        double result3 = 0.0; // Replace with correct expression and fix data type if needed
-
         System.out.println("float + double = " + result3 + " (Type: double)");
-
-        // Expression 4: char + int
-        // FILL HERE: Create a variable 'result4' that stores charVar + intVar (determine the correct data type)
-        int result4 = 0; // Replace with correct expression and fix data type if needed
-
         System.out.println("char + int = " + result4 + " (Type: int, 'B' has ASCII value 66)");
-        
+
         System.out.println("\n=== Part 4: Operator Associativity ===");
-
-        // Demonstrate left-to-right associativity with subtraction
+
         int a = 20, b = 10, c = 5;
-        // FILL HERE: Calculate result5 = a - b - c (should be evaluated as (a - b) - c)
-        int result5 = 0; // Replace with correct expression
-
+        int result5 = a - b - c;
+
         System.out.println("Left-to-right: " + a + " - " + b + " - " + c + " = " + result5);
-        System.out.println("Evaluation: (" + a + " - " + b + ") - " + c + " = " + (a - b) + " - " + c + " = " + result5);
-
-        // FILL HERE: Demonstrate right-to-left associativity with assignment
-        int x = 0, y = 0, z = 0; // Replace this line with chained assignment x = y = z = 15
-
+        System.out
+                .println("Evaluation: (" + a + " - " + b + ") - " + c + " = " + (a - b) + " - " + c + " = " + result5);
+
+        int x, y, z;
+        x = y = z = 15;
+
         System.out.println("Right-to-left assignment: x = y = z = 15");
         System.out.println("x = " + x + ", y = " + y + ", z = " + z);
     }
-}
+}