Code

Author: sagargoswami2001

BCA-V JAVA Practicle File Questions.pdf

@@ -0,0 +1,17 @@
+package Calc;
+
+import java.util.Scanner;
+
+public class Add {
+    int sum;
+    public void sum()
+    {
+        System.out.print("Enter the first number: ");
+        Scanner sc = new Scanner(System.in);
+        int firstNum = sc.nextInt();
+        System.out.print("Enter the second number: ");
+        int secondNum = sc.nextInt();
+        sum = firstNum+secondNum;
+        System.out.println("Sum=" + sum);
+    }
+}

Calc/Add.java

@@ -0,0 +1,17 @@
+package Calc;
+
+import java.util.Scanner;
+
+public class Subtract {
+    int difference;
+    public void subtract()
+    {
+        System.out.print("Enter the first number: ");
+        Scanner sc = new Scanner(System.in);
+        int firstNum = sc.nextInt();
+        System.out.print("Enter the second number: ");
+        int secondNum = sc.nextInt();
+        difference = firstNum-secondNum;
+        System.out.println("Difference=" + difference);
+    }
+}

Calc/Subtract.java

@@ -0,0 +1,32 @@
+//Q10. WAP to show the overloading of area function.
+package JAVA_Lab_File;
+
+import java.util.Scanner;
+
+public class Q10_Overload_Area_fun {
+    static void area(double radius){
+        double area = Math.PI * radius * radius;
+        System.out.print("Area of Circle is: " + String.format("%.5f", area) + " sq. units");
+    }
+    static void area(double base, double height){
+        double area = 0.5*base*height;
+        System.out.print("Area of Triangle is: " + String.format("%.5f", area) + " sq. units");
+    }
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.println("Calculate Area: \n1.Circle\n2.Triangle\nChoice: ");
+        int choice = sc.nextInt();
+        if(choice == 1){
+            System.out.print("Enter the radius of the circle: ");
+            double radius = sc.nextDouble();
+            area(radius);
+        } else if (choice == 2) {
+            System.out.print("Enter the base and height of the triangle: ");
+            double base = sc.nextDouble();
+            double height = sc.nextDouble();
+            area(base, height);
+        }else {
+            System.out.println("Invalid choice");
+        }
+    }
+}

Q10_Overload_Area_fun.java

@@ -0,0 +1,22 @@
+//Q11. WAP to check whether a given number is Armstrong or not.
+package JAVA_Lab_File;
+
+public class Q11_isArmstrong {
+    public static void main(String[] args) {
+
+        int number = 153, originalNumber, remainder, result = 0;
+        originalNumber = number;
+
+        while (originalNumber != 0)
+        {
+            remainder = originalNumber % 10;
+            result += Math.pow(remainder, 3);
+            originalNumber /= 10;
+        }
+        if(result == number) {
+            System.out.println(number + " is an Armstrong number.");
+        } else {
+            System.out.println(number + " is not an Armstrong number.");
+        }
+    }
+}

Q11_isArmstrong.java

@@ -0,0 +1,23 @@
+//Q12. WAP to check whether a given number is Armstrong or not.
+package JAVA_Lab_File;
+
+interface Animal {
+    public void animalSound();
+    public void sleep();
+}
+class Siyaar implements Animal {
+    public void animalSound() {
+        System.out.println("The Siyaar howls: Aaooo Aaooo");
+    }
+    public void sleep() {
+        System.out.println("Zzz");
+    }
+}
+public class Q12_Implement_interface {
+
+    public static void main(String[] args) {
+        Siyaar S_Siyaar = new Siyaar();
+        S_Siyaar.animalSound();
+        S_Siyaar.sleep();
+    }
+}

Q12_Implement_interface.java

@@ -0,0 +1,30 @@
+//Q13. WAP to create a package Calc with methods Sum() & Sub() and show the Implementation in a class.
+package JAVA_Lab_File;
+
+import Calc.Add;
+import Calc.Subtract;
+
+import java.util.Scanner;
+
+public class Q13_SumAndSub_Pack {
+    public static void main(String[] args)
+    {
+        System.out.println("Sum ");
+        System.out.println("Subtract ");
+
+        System.out.print("Enter your choice: ");
+        Scanner sc = new Scanner(System.in);
+        int t = sc.nextInt();
+        switch (t) {
+            case 1 -> {
+                Add a = new Add();
+                a.sum();
+            }
+            case 2 -> {
+                Subtract s = new Subtract();
+                s.subtract();
+            }
+            default -> System.out.println("invalid choice");
+        }
+    }
+}

Q13_SumAndSub_Pack.java

@@ -0,0 +1,19 @@
+//Q14. WAP to print reverse of a given number.
+package JAVA_Lab_File;
+
+import java.util.Scanner;
+
+public class Q14_Reverse_Num {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.println("Enter a no. to reverse it: ");
+        int num = sc.nextInt();
+        int r_num=0;
+        while(num>0)
+        {
+            r_num=(r_num*10)+(num%10);
+            num=num/10;
+        }
+        System.out.println("Reversed: "+ r_num);
+    }
+}

Q14_Reverse_Num.java

@@ -0,0 +1,14 @@
+//Q15. WAP to show the working of a single Catch block.
+package JAVA_Lab_File;
+
+public class Q15_Single_catch {
+    public static void main(String[] args) {
+        try{
+            int a = 10;
+            int b = 0;
+            int c = a/b; // exception
+        }catch(ArithmeticException e){
+            System.out.println(e);
+        }
+    }
+}

Q15_Single_catch.java

@@ -0,0 +1,20 @@
+//Q16. WAP to show working of throw and throws for handling exceptions
+package JAVA_Lab_File;
+
+import java.io.IOException;
+
+public class Q16_Throw_and_Throws {
+
+    public static void main(String[] args) throws IOException {
+        //declare exception
+        Test.method();
+        System.out.println("The Normal flow...");
+    }
+}
+class Test {
+    static void method()throws IOException
+    {
+        throw new IOException("Zaphkiel error");//checked exception
+    }
+}
+