Dynamic Binding in java
Suppose you have 3 Java classes: A, B, and C. Class B extends A, and class C extends B. Think of the class inheritance hierarchy alphabet...
how final modifier works in java
In Java, what does the ‘final’ modifier mean when applied to a method, class, and an instance variable? ...
What’s the difference between equals() and == in java ?
Before discussing the difference between “==” and the equals() method, it’s important to understand that an object has both a location i...
Java interface versus abstract class
An interface differs from an abstract class because an interface is not a class. An interface is essentially a type that can be satisf...
When to use abstract methods in Java?
Why you would want to declare a method as abstract is best illustrated by an example. Take a look at the code below: /* the Figure class...
In Java, will the code in the finally block be called and run after a return statement is executed?
The answer to this question is a simple yes – the code in a finally block will take precedence over the return statement. Take a look at...
what is reflection in java
The word reflection implies that the properties of whatever being examined are displayed or reflected to someone who wants to obser...
Get Http Status code using java code
import java.net.HttpURLConnection; import java.net.URL; class ResponseCodeCheck { public static void main (String args[]) throw...
Difference between string and stringbuffer class
String It is used to manipulate character strings that cannot be changed (read-only and immutable). StringBuffer: A StringBuffe...
Write a program to generate Harmonic Series.
/*Example Input - 5 Output - 1 + 1/2 + 1/3 + 1/4 + 1/5 = 2.28 (Approximately) */ class HarmonicSeries { public static void mai...
Complain Of "Enter Key"
Dear Computer User, I Do Appreciate Your Kind Attitude Towards The Keys 0f Keyboard, But 0ne question… Why Do You Press All Keys Softl...
Idiot Girl
Girl: Which computer do u have? Boy: I have a computer with intel core i7 processor at 3.3 ghz, windows 7, 64 bit, 8gb ram & nvidia ...
Write a program to find average of consecutive N Odd no. and Even no
class EvenOdd_Avg { public static void main(String args[]) { int n = Integer.parseInt(args[0]); int cntEven = 0, c...
1 to 10 Display Triangle
/* 1 2 3 4 5 6 7 8 9 10 ... N */ class Output1 { public static void main(String args[]) { int c = 0; int n = I...
Write a program to Find whether number is Prime or Not.
class PrimeNo { public static void main(String args[]) { int num = Integer.parseInt(args[0]); int flag = 0; ...
Write a program to find whether no. is palindrome or not.
/*Example : Input - 12521 is a palindrome no. Input - 12345 is not a palindrome no. */ class Palindrome { public static void ma...
Display Triangle
/* 0 1 0 1 0 1 0 1 0 1 */ class Output2 { public static void main(String args[]) { for (int i = 1; i <= 4; i++) { ...
Write a program to Display Invert Triangle using while loop.
/*Example : Input - 5 Output : 5 5 5 5 5 4 4 4 4 3 3 3 2 2 1 27 */ class InvertTriangle { public static void main(String a...
Write a program to find whether given no. is Armstrong or not.
/*Example : Input - 153 Output - 1^3 + 5^3 + 3^3 = 153, so it is Armstrong no. */ class Armstrong { public static void main(Str...
switch case demo
/*Example : Input - 124 Output - One Two Four */ class SwitchCaseDemo { public static void main(String args[]) { t...
Program to Display Multiplication Table
class MultiplicationTable { public static void main(String args[]) { int num = Integer.parseInt(args[0]); System.o...
Write a program to Swap the values
class Swap { public static void main(String args[]) { int num1 = Integer.parseInt(args[0]); int num2 = Integer.par...
Write a program to convert given no. of days into months and days.(Assume that each month is of 30 days)
/*Example : Input - 69 Output - 69 days = 2 Month and 9 days */ class DayMonthDemo { public static void main(String args[]) { ...
Write a program to generate Harmonic Series.
/*Example : Input - 5 Output - 1 + 1/2 + 1/3 + 1/4 + 1/5 = 2.28 (Approximately) */ class HarmonicSeries { public static void ma...
Write a program to find average of consecutive N Odd no. and Even no.
class EvenOdd_Avg { public static void main(String args[]) { int n = Integer.parseInt(args[0]); int cntEven = 0, c...
Write a program to concatenate string using for Loop
/*Example : Input - 5 Output - 1 2 3 4 5 */ class Join { public static void main(String args[]) { int num = Integer.par...
Write a program to find SUM AND PRODUCT of a given Digit.
class Sum_Product_ofDigit { public static void main(String args[]) { int num = Integer.parseInt(args[0]); //taking value a...
Write a program to display a greet message according to Marks obtained by student
class SwitchDemo { public static void main(String args[]) { int marks = Integer.parseInt(args[0]); //take marks as command...
To Find Minimum of Two Numbers using conditional operator
/* To find minimum of 2 Numbers using ternary operator */ class Minoftwo { public static void main(String args[]) { //taking v...
To Find Maximum of Two Numbers.
/* To Find Maximum of 2 Numbers using if else */ class Maxoftwo { public static void main(String args[]) { //taking value as c...
pyramid of numbers using for loops
/* Generate Pyramid For a Given Number Example This Java example shows how to generate a pyramid of numbers for given number using fo...
Factorial of a number using recursion
/* This program shows how to calculate Factorial of a number using recursion function. */ import java.io.BufferedReader; import ja...
Calculate Circle Area using radius
/* This program shows how to calculate area of circle using it's radius. */ import java.io.BufferedReader; import java.io.IOEx...
Nested Switch
/* Statements Example This example shows how to use nested switch statements in a java program. */ public class NestedSwitchExample {...
Reversed pyramid using for loops & decrement operator.
/* Pyramid 5 Example This Java Pyramid example shows how to generate pyramid or triangle like given below using for loop. 12345 1234 ...
Pyramid of stars using nested for loops
/* Java Pyramid 1 Example This Java Pyramid example shows how to generate pyramid or triangle like given below using for loop. * ...
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