Java Programming

Java Programming Practical 10 Question 1 Write a program to implement user defined packages in terms of creating a new package and importing the same. PkgClass.java Java package pkg1; public class PkgClass { public void show() { System.out.println("This is inside package"); } public static int subtract(int a, int b) { return a – b; } […]

Java Programming Practical 9 Question 1 Develop a program to find area of rectangle and circle using interfaces. InterfaceDemo.java Java interface Shape { void calculateArea(); } class Rectangle implements Shape { float length,width; Rectangle(float l, float w) { length = l; width = w; } public void calculateArea() { float a=length * width; System.out.println("Area of

Java Programming Practical 8 Question 1 Write a program to implement single inheritance SingleInheritanceDemo.java Java class Person { String name; public void get(String n) { name=n; } public void show() { System.out.println("Name is: " +name); } } class Student extends Person { int rollno; public void accept(int r) { rollno=r; } public void display() {

Java Programming Practical 7 Question 1 Write a program to implement different types of constructors to perform addition of complex numbers. ComplexDemo.java Java class Complex { float real; float img; public Complex() { real = 0.0f; img = 0.0f; } public Complex(float r) { real = r; img = 0.0f; } public Complex(float r, float

Java Programming Practical 6 Question 1 Write a program to show the use of Integer Wrapper class methods. IntegerWrapperDemo.java Java public class IntegerWrapperDemo { public static void main(String[] args) { String str = "123"; int num = Integer.parseInt(str); System.out.println("String to number: " + num); int val = 546; System.out.println("Binary number: " + Integer.toBinaryString(val)); System.out.println("Octal number:

Java Programming Practical 5 Question 1 Write a program to implement multidimensional array. ArrayDemo.java Java // Java Program for Creating two // Dimensional array with user Inputs import java.util.Scanner; public class ArrayDemo { public static void main(String[] args) { Scanner scn = new Scanner(System.in); System.out.print("Enter number of rows: "); int row = scn.nextInt(); System.out.print("Enter number

Java Programming Practical 4 Question 1 Write a program to show the use of all methods of String class. StringDemo.java Java import java.io.*; import java.util.*; class StringDemo { public static void main (String[] args) { String s= "String Methods Example"; System.out.println("String length = " + s.length()); System.out.println("Character at 3rd position = "+ s.charAt(3)); System.out.println("Substring "

Java Programming Practical 3 Question 1 Write a program to check multiple conditions using if statement along with logical operators. LogicalDemo.java Java import java.util.*; public class LogicalDemo { public static void main(String a[]) { int i; i=1; do { if(i==5||i==10) System.out.println(i); i++; } while(i<=20); } } import java.util.*; public class LogicalDemo { public static void