Nested Loops Star Pattern Java Programming java code

Simple Java Code for Star Pattern.

import java.util.Scanner;

public class StarPatternUsingNastedLoops {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int i = sc.nextInt();

        for (int line = 1; line <= i; line++) {

            // one line

            for (int star = 1; star <= line; star++) {

                System.out.print("*");

            }

            System.out.println("");

        }

    }

}

Output: 

java .\StarPatternUsingNastedLoops.java

7

*

**

***

****

*****

******

*******

Java program to print the multiplication table of a number N, entered by the user.

filename = MultiplicationTable.java

//Write a program to print the multiplication table of a number N, entered by the user.

import java.util.*;

class MultiplicationTable {

    public static void printMultiplicationTable(int number) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number : ");

        int n = sc.nextInt();

        for (int i = 1; i <= 10; i++) {

            System.out.println(n + " * " + i + " = " + n * i);

        }

    }

    public static void main(String s[]) {

        printMultiplicationTable(5);

    }

}

filename: MultiTest.java

import java.util.*; //Write a program to print the multiplication table of a number N, entered by the user.

public class MultiTest {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number : ");

        int n = sc.nextInt();

        for (int i = 1; i <= 10; i++) {

            System.out.println(n + " * " + i + " = " + n * i);

        }

    }

}

filename: printMultiplicationTable.java

import java.util.*; //Write a program to print the multiplication table of a number N, entered by the user.

class MultiplicationTable {

    public static void printMultiplicationTable(int number) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number : ");

        int n = sc.nextInt();

        for (int i = 1; i <= 10; i++) {

            System.out.println(n + " * " + i + " = " + n * i);

        }

    }

    public static void main(String s[]) {

        printMultiplicationTable(5);

    }

}

Output of program: 

Loops> java .\MultiplicationTable.java

Enter number: 5

5 * 1 = 5

5 * 2 = 10

5 * 3 = 15

5 * 4 = 20

5 * 5 = 25

5 * 6 = 30

5 * 7 = 35

5 * 8 = 40

5 * 9 = 45

5 * 10 = 50

Write a JAVA program that reads a set of integers, and then prints the sum of the even and odd integers.

 import java.util.Scanner;

public class ReadSetofIntegersPrintsSumofEvenAndOddIntegers {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int number, chioce, evenSum = 0, OddSum = 0;

        do {

            System.out.print("Enter the number ");

            number = sc.nextInt();

            if (number % 2 == 0) {

                evenSum += number;

            } else {

                OddSum += number;

            }

            System.out.println("Do you want to continue? Press 1 for yes or 0 for no");

            chioce = sc.nextInt();

        } while (chioce == 1);

        System.out.println("Sum of even numbers: " + evenSum);

        System.out.println("Sum of odd numbers: " + OddSum);

    }

}

import java.util.Scanner;

public class ReadSetofIntegersPrintsSumofEvenAndOddIntegers {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int number, chioce, evenSum = 0, OddSum = 0;

        do {

            System.out.print("Enter the number ");

            number = sc.nextInt();

            if (number % 2 == 0) {

                evenSum += number;

            } else {

                OddSum += number;

            }

            System.out.println("Do you want to continue? Press 1 for yes or 0 for no");

            chioce = sc.nextInt();

        } while (chioce == 1);

        System.out.println("Sum of even numbers: " + evenSum);

        System.out.println("Sum of odd numbers: " + OddSum);

    }

}

Output:

Enter the number 4 Do you want to continue? Press 1 for yes or 0 for no 1 Enter the number 6 Do you want to continue? Press 1 for yes or 0 for no 1 Enter the number 8 Do you want to continue? Press 1 for yes or 0 for no 1 Enter the number 9 Do you want to continue? Press 1 for yes or 0 for no 0 Sum of even numbers: 18 Sum of odd numbers: 9

Check if a number is Prime or not simple Java programming Code

 import java.util.Scanner;

public class PrimeNumberCheck {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        boolean isPrime = true;

        for (int i = 2; i <= n - 1; i++) {

            if (n % i == 0) { // n is multiple of i (i not equal to 1 or n)

                isPrime = false;

            }

        }

        if (isPrime == true) {

            System.out.print(n + " is prime number");

        } else {

            System.out.print(n + " is not prime number");

        }

    }

}

import java.util.Scanner;

public class PrimeNumberCheck {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        boolean isPrime = true;

        for (int i = 2; i <= n - 1; i++) {

            if (n % i == 0) { // n is multiple of i (i not equal to 1 or n)

                isPrime = false;

            }

        }

        if (isPrime == true) {

            System.out.print(n + " is prime number");

        } else {

            System.out.print(n + " is not prime number");

        }

    }

}

Keep entering numbers till user enters a multiple of 10, simple Java programming Code by Naymul Islam PCIU CSE 18

 import java.util.Scanner;

public class KeepEnteringNumbersTillUserEntersMultipleOf {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        do {

            System.out.println("Enter your Number : ");

            int num = sc.nextInt();

            if (num % 10 == 0) {

                break;

            }

            System.out.println(num);

        } while (true);

    }

}

import java.util.Scanner;

public class KeepEnteringNumbersTillUserEntersMultipleOf {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        do {

            System.out.println("Enter your Number : ");

            int num = sc.nextInt();

            if (num % 10 == 0) {

                break;

            }

            System.out.println(num);

        } while (true);

    }

}

Reverse the given number simple Java programming Code by Naymul Islam PCIU CSE 18

 import java.util.Scanner;

public class ReverseTheGivennNumber {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int num = sc.nextInt();

        int rev = 0;

        while (num > 0) {

            int lastDigit = num % 10;

            rev = (rev * 10) + lastDigit;

            num /= 10;

        }

        System.out.println(rev);

    }

}

import java.util.Scanner;

public class ReverseTheGivennNumber {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int num = sc.nextInt();

        int rev = 0;

        while (num > 0) {

            int lastDigit = num % 10;

            rev = (rev * 10) + lastDigit;

            num /= 10;

        }

        System.out.println(rev);

    }

}

Print reverse of a number simple Java programming Code by Naymul Islam PCIU CSE 18

 import java.util.Scanner;

public class ReverseOfNumber {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in); // use for input from user

        int num = sc.nextInt();

        // int num = 10899;

        while (num > 0) {

            int lastDigit = num % 10;

            System.out.print(lastDigit);

            num = num / 10; // n/10;

        }

        System.out.println();

    }

}

import java.util.Scanner;

public class ReverseOfNumber {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in); // use for input from user

        int num = sc.nextInt();

        // int num = 10899;

        while (num > 0) {

            int lastDigit = num % 10;

            System.out.print(lastDigit);

            num = num / 10; // n/10;

        }

        System.out.println();

    }

}

Print Square pattern Java programming Code Basic

 import java.util.*;

//Print Square pattern

public class squarePattern {

    public static void main(String args[]) {

        // for (int lines = 1; lines <= 4; lines++)

        // System.out.println("****");

        int lines = 1;

        while (lines <= 4) {

            System.out.println("****");

            lines++;

        }

    }

}

import java.util.*;

//Print Square pattern

public class squarePattern {

    public static void main(String args[]) {

        // for (int lines = 1; lines <= 4; lines++)

        // System.out.println("****");

        int lines = 1;

        while (lines <= 4) {

            System.out.println("****");

            lines++;

        }

    }

}

Sum of first N natural Numbers Java programming code

 import java.util.Scanner;

// Sum of first N natural Numbers , Naymul Islam CSE 18

public class sumofN {

    public static void main(String args[]) {

        System.out.print("Enter Natural Number: ");

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int sum = 0;

        int i = 1;

        while (i <= n) {

            sum += i;

            i++;

        }

        // System.out.println(sum);

        System.out.println("Sum of first " + n + " natural Numbers: " + sum);

    }

}

import java.util.Scanner;

// Sum of first N natural Numbers

public class sumofN {

    public static void main(String args[]) {

        System.out.print("Enter Natural Number: ");

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int sum = 0;

        int i = 1;

        while (i <= n) {

            sum += i;

            i++;

        }

        // System.out.println(sum);

        System.out.println("Sum of first " + n + " natural Numbers: " + sum);

    }

}

I Love You Print in 100 times JAVA code

 import java.util.Scanner;

public class WhileLoop {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int counter = 1;

        while (counter <= n) {

            System.out.println("I Love You " + counter);

            counter++;

        }

        System.out.println(n + " times I love you print.");

    }

}

Simple Calculator JAVA code

 import java.util.Scanner;

public class calculator {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter a :");

        int a = sc.nextInt();

        System.out.println("Enter b :");

        int b = sc.nextInt();

        System.out.println("Enter Operator");

        char operator = sc.next().charAt(0);

        switch (operator) {

            case '+':

                System.out.println(a + b);

                break;

            case '-':

                System.out.println(a - b);

                break;

            case '*':

                System.out.println(a * b);

                break;

            case '/':

                System.out.println(a / b);

                break;

            case '%':

                System.out.println(a % b);

                break;

            default:

                System.out.println("Wrong Operator");

                break;

        }

    }

}

import java.util.Scanner;

public class calculator {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter a :");

        int a = sc.nextInt();

        System.out.println("Enter b :");

        int b = sc.nextInt();

        System.out.println("Enter Operator");

        char operator = sc.next().charAt(0);

        switch (operator) {

            case '+':

                System.out.println(a + b);

                break;

            case '-':

                System.out.println(a - b);

                break;

            case '*':

                System.out.println(a * b);

                break;

            case '/':

                System.out.println(a / b);

                break;

            case '%':

                System.out.println(a % b);

                break;

            default:

                System.out.println("Wrong Operator");

                break;

        }

    }

}

"Year is a leap year or not" JAVA code by Naymul Islam CSE 18 PCIU

Code: 

import java.util.Scanner;

public class LeapYear {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        System.out.println("Input the year: ");

        int year = sc.nextInt();

        boolean x = (year % 4) == 0;

        boolean y = (year % 100) != 0;

        boolean z = ((year % 100 == 0) && (year % 400 == 0));

        if (x && (y || z)) {

            System.out.println(year + " is a leap year");

        } else {

            System.out.println(year + " is not a leap year");

        }

    }

}

 import java.util.Scanner;

public class LeapYear {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);

        System.out.println("Input the year: ");

        int year = sc.nextInt();

        boolean x = (year % 4) == 0;

        boolean y = (year % 100) != 0;

        boolean z = ((year % 100 == 0) && (year % 400 == 0));

        if (x && (y || z)) {

            System.out.println(year + " is a leap year");

        } else {

            System.out.println(year + " is not a leap year");

        }

    }

}

                                                                                                                                        

Flag of Norway on C or C++ .cpp programming language by using c graphics library functions

 Write a C program to Draw the Flag of Norway.

Function Name :  Draw the Flag of Norway

Purpose :  In this Program we will learn how to draw the Norway flag on the output screen in c programming language by using c graphics library functions.

Code : 

#include<graphics.h> #include<conio.h> main() { int driver,mode; driver=DETECT; mode=0; initgraph(&driver,&mode,"c:\\tc\\bgi"); initgraph(&driver,&mode,""); setbkcolor(WHITE); setcolor(WHITE); rectangle(150,40,430,180); setfillstyle(1,RED); floodfill(160,50,WHITE); setfillstyle(1,WHITE); bar(150,90,430,130); setfillstyle(1,WHITE); bar(230,40,270,180); setfillstyle(1,BLUE); bar(150,100,430,120); setfillstyle(1,BLUE); bar(240,40,260,180); getch(); }

Output: