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README.md

@@ -1,3 +1,4 @@
+[![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:

q1/q1.java

@@ -1,47 +1,52 @@
 // FILL HERE: Import the necessary package for input operations
-
+import java.util.*;
 
 // 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
-
+        int age  = 25;
         // FILL HERE: Declare a double variable named 'height' and initialize it to 5.8
-
+        double height = 5.8;
         // FILL HERE: Declare a char variable named 'grade' and initialize it to 'A'
-
+        char grade = 'A';
         // FILL HERE: Declare a boolean variable named 'isStudent' and initialize it to true
-
+        boolean isStudent = true;
         // FILL HERE: Declare a String variable named 'name' and initialize it to "John Doe"
-
+        String name = "John Doe";
 
         // Output statements
         System.out.println("=== Student Information ===");
 
         // FILL HERE: Print the name using System.out.println
-
+        System.out.println(name);
         // FILL HERE: Print the age using System.out.println (format: "Age: 25")
-
+        System.out.println("Age: "+age);
         // FILL HERE: Print the height using System.out.println (format: "Height: 5.8 feet")
-
+        System.out.println("Height: "+height);
         // FILL HERE: Print the grade using System.out.println (format: "Grade: A")
-
+        System.out.println("Grade: "+grade);
         // FILL HERE: Print the student status using System.out.println (format: "Is Student: true")
-
+        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")
-
+        System.out.println("int");
         // FILL HERE: Print the data type of height variable (hint: use "double")
-
+        System.out.println("double");
         // FILL HERE: Print the data type of grade variable (hint: use "char")
-
+        System.out.println("char");
         // FILL HERE: Print the data type of isStudent variable (hint: use "boolean")
-
+        System.out.println("boolean");
         // FILL HERE: Print the data type of name variable (hint: use "String")
+        System.out.println("String");
     }
-}
+}

q2/q2.java

@@ -9,4 +9,40 @@
 // 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) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.print("Enter first number: ");
+        double num1 = sc.nextDouble();
+
+        System.out.print("Enter second number: ");
+        double num2 = sc.nextDouble();
+
+        System.out.println("\n--- Arithmetic Operations ---");
+        System.out.println("Addition: " + (num1 + num2));
+        System.out.println("Subtraction: " + (num1 - num2));
+        System.out.println("Multiplication: " + (num1 * num2));
+        System.out.println("Division: " + (num1 / num2));
+        System.out.println("Modulus: " + (num1 % num2));
+
+        System.out.println("\n--- Relational Operators ---");
+        System.out.println(num1 + " > " + num2 + " : " + (num1 > num2));
+        System.out.println(num1 + " < " + num2 + " : " + (num1 < num2));
+        System.out.println(num1 + " == " + num2 + " : " + (num1 == num2));
+        System.out.println(num1 + " != " + num2 + " : " + (num1 != num2));
+
+        System.out.println("\n--- Logical Operators ---");
+        boolean cond1 = (num1 > 0);
+        boolean cond2 = (num2 > 0);
+
+        System.out.println("Both numbers positive (AND): " + (cond1 && cond2));
+        System.out.println("At least one number positive (OR): " + (cond1 || cond2));
+        System.out.println("First number NOT positive: " + (!cond1));
+
+        sc.close();
+    }
+}

q3/q3.java

@@ -4,75 +4,75 @@
 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
+        int decimal = 42; // 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
+        int binary = 0b101010; // 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
+        int octal = 052; // 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 hex = 0x2A; // Replace 0 with correct hexadecimal literal
 
         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
+        float floatNum = 3.14f; // Replace with correct value
 
         // FILL HERE: Create a double literal variable 'doubleNum' with value 2.718281828
-        double doubleNum = 0.0; // Replace with correct value
+        double doubleNum = 2.718271728; // Replace with correct value
 
         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
+        char letter = 'A'; // 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 unicodeChar = '\u0041'; // Replace with correct unicode character
 
         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
+        boolean isTrue = true; // Replace with correct value
 
         // FILL HERE: Create a String literal variable 'message' with value "Hello, Java!"
-        String message = ""; // Replace with correct string
+        String message = "Hello, Java!"; // Replace with correct string
 
         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; // Replace with correct initial value
 
         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); // Add post-increment operation
         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); // Add pre-increment operation
         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); // Add post-decrement operation
         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); // Add pre-decrement operation
         System.out.println("Counter after pre-decrement: " + counter);
 
         System.out.println("\n=== Part 3: Data Type of Expressions ===");
@@ -85,25 +85,25 @@ public static void main(String[] args) {
 
         // 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; // Replace with correct expression and fix data type if needed
 
         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
+        double result2 = intVar + doubleVar ; // 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
+        double result3 = floatVar + doubleVar; // 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
+        int result4 = charVar + intVar ; // Replace with correct expression and fix data type if needed
 
         System.out.println("char + int = " + result4 + " (Type: int, 'B' has ASCII value 66)");
 
@@ -112,15 +112,15 @@ public static void main(String[] args) {
         // 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 ; // Replace with correct expression
 
         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
-
+        x = y = z = 15;
         System.out.println("Right-to-left assignment: x = y = z = 15");
         System.out.println("x = " + x + ", y = " + y + ", z = " + z);
     }
-}
+}