JAVA programs asked in selenium interview with Example

JAVA Programs Asked in Selenium Interview :-

JAVA PROGRAM | ACCESS MODIFIER IN JAVA

package package_name;

public class AccessModifierInJava {

      public int i=1;
      protected int k=2;
      private int p=3;
      int d=4;

      public void test1() {

            System.out.println("public void test1()");
      }

      protected void test2() {

            System.out.println("protected void test2()");
      }

      void test3() {

            System.out.println("void test3()");
      }

      private void test4() {

            System.out.println("private void test4()");
      }

      public static void main(String[] args) {

AccessModifierInJava obj = new AccessModifierInJava();

      obj.test1();
      obj.test2();
      obj.test3();
      obj.test4();

      System.out.println(obj.i);
      System.out.println(obj.k);
      System.out.println(obj.p);
      System.out.println(obj.d);
      }

}

package package_name;

public class AccessModifierInJava {

public int i=1;

protected int k=2;

private int p=3;

int d=4;

public void test1() {

System.out.println("public void test1()");

}

protected void test2() {

System.out.println("protected void test2()");

}

void test3() {

System.out.println("void test3()");

}

private void test4() {

System.out.println("private void test4()");

}

public static void main(String[] args) {

AccessModifierInJava obj = new AccessModifierInJava();

obj.test1();

obj.test2();

obj.test3();

obj.test4();

System.out.println(obj.i);

System.out.println(obj.k);

System.out.println(obj.p);

System.out.println(obj.d);

}

Output:

public void test1()

protected void test2()

void test3()

private void test4()

1

2

3

4

public void test1()

protected void test2()

void test3()

private void test4()

JAVA PROGRAM | LIST OF EVEN NUMBERS

Note: if the number is divisible by 2 then it is even

import java.util.Scanner;

public class ListEvenNumbers {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Limit:- ");

int value = sc.nextInt();

System.out.println("Print Even numbers between 1 and " + value);

for (int i = 1; i &lt;= value; i++) {

// if the number is divisible by 2 then it is even
if (i % 2 == 0) {

System.out.print(i + " ");
}
}
}
}

import java.util.Scanner;

public class ListEvenNumbers {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Limit:- ");

int value = sc.nextInt();

System.out.println("Print Even numbers between 1 and " + value);

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

// if the number is divisible by 2 then it is even

if (i % 2 == 0) {

System.out.print(i + " ");

}

Output:

Enter Limit:-

15

Print Even numbers between 1 and 15

2 4 6 8 10 12 14

Enter Limit:-

Print Even numbers between 1 and 15

2 4 6 8 10 12 14

JAVA PROGRAM | COMPARE TWO NUMBERS USING IF-ELSE

import java.util.Scanner;

public class CompareTwoNumbers {

     public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);

            System.out.println("Enter Number 1:- ");
            int num1 = sc.nextInt();

            System.out.println("Enter Number 2:- ");
            int num2 = sc.nextInt();

            if (num1 &gt; num2) {

System.out.println(num1 + " is greater than " + num2);

            }

            else if (num1 &lt; num2) {

System.out.println(num1 + " is less than " + num2);

            }

            else {

System.out.println(num1 + " is equal to " + num2);

            }

      }

}

import java.util.Scanner;

public class CompareTwoNumbers {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Number 1:- ");

int num1 = sc.nextInt();

System.out.println("Enter Number 2:- ");

int num2 = sc.nextInt();

if (num1 > num2) {

System.out.println(num1 + " is greater than " + num2);

}

else if (num1 < num2) {

System.out.println(num1 + " is less than " + num2);

}

else {

System.out.println(num1 + " is equal to " + num2);

}

Output:

Enter Number 1:-

15

Enter Number 2:-

12

15 is greater than 12

Enter Number 1:-

Enter Number 2:-

15 is greater than 12

JAVA PROGRAM | DETERMINE YEAR IS LEAP YEAR OR NOT

Note: Every fourth year is Leap Year.

import java.util.Scanner;

public class DetermineLeapYear {

     public static void main(String[] args) {

           Scanner sc = new Scanner(System.in);

           System.out.println("Enter Year:- ");

           int year = sc.nextInt();

           // if year is divisible by 4, it is a leap year
if ((year % 400 == 0) || ((year % 4 == 0) &amp;&amp; (year % 100 != 0)))

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

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

}

import java.util.Scanner;

public class DetermineLeapYear {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Year:- ");

int year = sc.nextInt();

// if year is divisible by 4, it is a leap year

if ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0)))

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

else

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

}

Output:

Enter Year:-

2012

Year 2012 is a leap year

Enter Year:-

2012

Year 2012 is a leap year

JAVA PROGRAM | PALINDROME NUMBER

Note: A palindromic number or numeral palindrome is a number that remains the same when its digits are reversed.

import java.util.Scanner;

class PalindromeExample {

      public static void main(String args[]) {

           int r, sum = 0, temp;

           Scanner sc = new Scanner(System.in);

System.out.println("Enter No to Check Palindrome or Not:");

           int n = sc.nextInt();

           temp = n;

           while (n &gt; 0) {

            r = n % 10; // getting remainder

            sum = (sum * 10) + r;

             n = n / 10;

            }

            if (temp == sum)

            System.out.println("No is Palindrome");

                        else

            System.out.println("No is Not Palindrome ");
      }
}

import java.util.Scanner;

class PalindromeExample {

public static void main(String args[]) {

int r, sum = 0, temp;

Scanner sc = new Scanner(System.in);

System.out.println("Enter No to Check Palindrome or Not:");

int n = sc.nextInt();

temp = n;

while (n > 0) {

r = n % 10; // getting remainder

sum = (sum * 10) + r;

n = n / 10;

}

if (temp == sum)

System.out.println("No is Palindrome");

else

System.out.println("No is Not Palindrome ");

}

Output:

Enter No to Check Palindrome or Not:

131

No is Palindrome

Enter No to Check Palindrome or Not:

131

No is Palindrome

JAVA PROGRAM | FACTORIAL OF A NUMBER

Note: A factorial is a function that multiplies a number by every number below it.

For example: 5!= 5*4*3*2*1=120.

import java.util.Scanner;

public class NumberFactorial {

     public static void main(String[] args) {

          Scanner sc = new Scanner(System.in);

          System.out.println("Enter Limit:- ");

          int value = sc.nextInt();

          int factorial = value;

          for (int i = (value - 1); i &gt; 1; i--) {

                 factorial = factorial * i;

          }

System.out.println("Factorial of number is " + factorial);
     }
}

import java.util.Scanner;

public class NumberFactorial {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Limit:- ");

int value = sc.nextInt();

int factorial = value;

for (int i = (value - 1); i > 1; i--) {

factorial = factorial * i;

}

System.out.println("Factorial of number is " + factorial);

}

Output:

Enter Limit:-

5

Factorial of number is 120

Enter Limit:-

Factorial of number is 120

JAVA PROGRAM | PYRAMID OF NUMBERS USING FOR LOOPS

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GeneratePyramid {

public static void main(String[] args) throws Exception {

BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));

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

           int as = Integer.parseInt(keyboard.readLine());

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

           int x = Integer.parseInt(keyboard.readLine());

           int y = 0;

           for (int i = 0; i &lt;= as; i++) {

                  for (int j = 1; j &lt;= i; j++) {

                            System.out.print(y + "\t");
                            y = y + x;
                       }

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

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class GeneratePyramid {

public static void main(String[] args) throws Exception {

BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));

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

int as = Integer.parseInt(keyboard.readLine());

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

int x = Integer.parseInt(keyboard.readLine());

int y = 0;

for (int i = 0; i <= as; i++) {

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

System.out.print(y + "\t");

y = y + x;

}

System.out.println("");

}

Output:

Enter    Number:

5

Enter    X:

2

0         

2          4         

6          8          10       

12        14        16        18       

20        22        24        26        28

Enter Number:

Enter X:

2 4

6 8 10

12 14 16 18

20 22 24 26 28

JAVA PROGRAM | CALCULATE AREA OF THE CIRCLE

Note: Square the radius and multiply by pi to find the area of the circle.

import java.util.Scanner;

public class AreaOfCircle {

     public static void main(String ag[]) {

           int rad;
           double pie = 3.14, ar;

           Scanner s = new Scanner(System.in);

           System.out.print("Enter radius of circle:");

           rad = s.nextInt();

           ar = pie * rad * rad;

           System.out.println("Area of circle:" + ar);
     }
}

import java.util.Scanner;

public class AreaOfCircle {

public static void main(String ag[]) {

int rad;

double pie = 3.14, ar;

Scanner s = new Scanner(System.in);

System.out.print("Enter radius of circle:");

rad = s.nextInt();

ar = pie * rad * rad;

System.out.println("Area of circle:" + ar);

}

Output:

Enter radius of circle:5

Area of circle:78.5

Enter radius of circle:5

Area of circle:78.5

JAVA PROGRAM | ARRAYLIST

package package_name;
import java.util.ArrayList;
import java.util.List;

public class ArrayListInJava {           

  public static void main(String[] args) {                       

  List arrayList = new ArrayList&lt;&gt;();                       

            arrayList.add(1);
            arrayList.add(1.2);
            arrayList.add(true);
            arrayList.add("Java");
            arrayList.add(2);                       

  System.out.println(arrayList);                       

  List&lt;Integer&gt; arrayList1 = new ArrayList&lt;Integer&gt;();

            arrayList1.add(1);
            arrayList1.add(2);
            arrayList1.add(3);
            arrayList1.add(4);

            System.out.println(arrayList1);                      

      }

}

package package_name;

import java.util.ArrayList;

import java.util.List;

public class ArrayListInJava {

public static void main(String[] args) {

List arrayList = new ArrayList<>();

arrayList.add(1);

arrayList.add(1.2);

arrayList.add(true);

arrayList.add("Java");

arrayList.add(2);

System.out.println(arrayList);

List<Integer> arrayList1 = new ArrayList<Integer>();

arrayList1.add(1);

arrayList1.add(2);

arrayList1.add(3);

arrayList1.add(4);

System.out.println(arrayList1);

}

Output:

[1, 1.2, true, Java, 2]

[1, 2, 3, 4]

[1, 1.2, true, Java, 2]

[1, 2, 3, 4]

JAVA PROGRAM | FIBONACCI SERIES

Note: The Fibonacci sequence is a set of numbers that starts with a one or a zero, followed by a one, and proceeds based on the rule that each number (called a Fibonacci number) is equal to the sum of the preceding two numbers. … F (0) = 0, 1, 1, 2, 3, 5, 8, 13, 21, 34…

import java.util.Scanner;

public class Fibonacci {

     public static void main(String[] args) {                       

          Scanner sc = new Scanner(System.in);

System.out.println("Enter No for Fibonacci series :");

          int n = sc.nextInt();

          int t1 = 0, t2 = 1;

          System.out.print("First " + n + " terms: ");

          for (int i = 1; i &lt;= n; ++i) {

           System.out.print(t1 + " + ");

           int sum = t1 + t2;

           t1 = t2;

           t2 = sum;

          }

      }

}

import java.util.Scanner;

public class Fibonacci {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter No for Fibonacci series :");

int n = sc.nextInt();

int t1 = 0, t2 = 1;

System.out.print("First " + n + " terms: ");

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

System.out.print(t1 + " + ");

int sum = t1 + t2;

t1 = t2;

t2 = sum;

}

Output:

Enter No for Fibonacci series :

10

First 10 terms: 0 + 1 + 1 + 2 + 3 + 5 + 8 + 13 + 21 + 34 +

Enter No for Fibonacci series :

First 10 terms: 0 + 1 + 1 + 2 + 3 + 5 + 8 + 13 + 21 + 34 +

JAVA PROGRAM | CALCULATE SUM OF NUMBERS IN ARRAY

package package_name;

public class CalculateSumOfNumbersOfArray {

public int calculateSumOfNumbers() {

       int[] a = { 10, 20, 30, 40 };

       int sum = 0;

       for (int arr : a) 
{

       sum = sum + arr;

  }

       return sum;
  }

public static void main(String[] args) {

CalculateSumOfNumbersOfArray obj = new CalculateSumOfNumbersOfArray();

System.out.println(obj.calculateSumOfNumbers());
}
}

package package_name;

public class CalculateSumOfNumbersOfArray {

public int calculateSumOfNumbers() {

int[] a = { 10, 20, 30, 40 };

int sum = 0;

for (int arr : a)

{

sum = sum + arr;

}

return sum;

}

public static void main(String[] args) {

CalculateSumOfNumbersOfArray obj = new CalculateSumOfNumbersOfArray();

System.out.println(obj.calculateSumOfNumbers());

}

Output:

100

100

JAVA PROGRAM | PRIME NUMBERS BETWEEN 1 TO GIVEN NUM

Note: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

import java.util.Scanner;

public class GeneratePrimeNumbers {

     public static void main(String[] args) {

           Scanner sc = new Scanner(System.in);

           System.out.println("Enter Prime No's Limit:- ");

           int limit = sc.nextInt();

           // loop through the numbers one by one
           for (int i = 1; i &lt; 50; i++) {

           boolean isPrime = true;

           // check to see if the number is prime
           for (int j = 2; j &lt; i; j++) {

           if (i % j == 0) {

            isPrime = false;

           break;
         }

           }

           // print the number
           if (isPrime)

         System.out.print(i + " ");

           }
      }
}

import java.util.Scanner;

public class GeneratePrimeNumbers {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Prime No's Limit:- ");

int limit = sc.nextInt();

// loop through the numbers one by one

for (int i = 1; i < 50; i++) {

boolean isPrime = true;

// check to see if the number is prime

for (int j = 2; j < i; j++) {

if (i % j == 0) {

isPrime = false;

break;

}

// print the number

if (isPrime)

System.out.print(i + " ");

}

Output:

Enter Prime No's Limit:-

10

1 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47

Enter Prime No's Limit:-

1 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47

JAVA PROGRAM | REVERSE STRING WITHOUT REVERSE FUNCTION

import java.util.Scanner;

class Reverse_Func {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter String to Reverse:- ");

String str = sc.nextLine();                       

int i = str.length();

StringBuffer strb = new StringBuffer();

for (int j = i - 1; j &gt;= 0; j--) {

strb = strb.append(str.charAt(j));
}

System.out.println(strb);
            }
}

import java.util.Scanner;

class Reverse_Func {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter String to Reverse:- ");

String str = sc.nextLine();

int i = str.length();

StringBuffer strb = new StringBuffer();

for (int j = i - 1; j >= 0; j--) {

strb = strb.append(str.charAt(j));

}

System.out.println(strb);

}

Output:

Enter String to Reverse:-

sandeep

peednas

Enter String to Reverse:-

sandeep

peednas

JAVA PROGRAM | NESTED SWITCH

public class NestedSwitch {

     public static void main(String[] args) {

         int i = 0;
         int j = 1;

         switch (i)

         {

         case 0:
                switch (j)

                {

                case 0:
                 System.out.println("i is 0, j is 0");
                 break;

                case 1:
                 System.out.println("i is 0, j is 1");
                 break;

                 default:
                  System.out.println("default case!!");

                }

                break;
                default:

                 System.out.println("No case found!!");

                }
      }
}

public class NestedSwitch {

public static void main(String[] args) {

int i = 0;

int j = 1;

switch (i)

{

case 0:

switch (j)

{

case 0:

System.out.println("i is 0, j is 0");

break;

case 1:

System.out.println("i is 0, j is 1");

break;

default:

System.out.println("default case!!");

}

break;

default:

System.out.println("No case found!!");

}

Output:

i is 0, j is 1

1	i is 0, j is 1

JAVA PROGRAM | FACTORIAL OF A NUMBER USING RECURSION

Note: The factorial of a number is defined is the product of natural numbers from one to that particular number.

import java.util.Scanner;

class FactorialUsingRecursion {

     static int factorial(int n) {

            if (n == 0)

                 return 1;
            else
                 return (n * factorial(n - 1));
            }

     public static void main(String args[]) {

            int i, fact = 1;                       

            Scanner sc = new Scanner(System.in);

     System.out.println("Enter Number to Factorial:- ");                 

            int number = sc.nextInt();                       

            fact = factorial(number);
System.out.println("Factorial of "+number+" is:"+fact);
     }

}

import java.util.Scanner;

class FactorialUsingRecursion {

static int factorial(int n) {

if (n == 0)

return 1;

else

return (n * factorial(n - 1));

}

public static void main(String args[]) {

int i, fact = 1;

Scanner sc = new Scanner(System.in);

System.out.println("Enter Number to Factorial:- ");

int number = sc.nextInt();

fact = factorial(number);

System.out.println("Factorial of "+number+" is:"+fact);

}

Output:

Enter Number to Factorial:-

5

Factorial of 5 is: 120

Enter Number to Factorial:-

Factorial of 5 is: 120

JAVA PROGRAM | CALCULATE ‘DIGIT SUM’

import java.util.Scanner;

public class SumofDigits {

      public static int sum(int n) {

            return n == 0 ? 0 : n % 10 + sum(n / 10);
      }

      public static void main(String[] args) {

           Scanner sc = new Scanner(System.in);

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

           int num = sc.nextInt();

           sc.close();

System.out.println("Sum of digits" + num + " is: " + sum(num));
     }
}

import java.util.Scanner;

public class SumofDigits {

public static int sum(int n) {

return n == 0 ? 0 : n % 10 + sum(n / 10);

}

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

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

int num = sc.nextInt();

sc.close();

System.out.println("Sum of digits" + num + " is: " + sum(num));

}

Output:

Enter a number:

15

Sum of digits 15 is: 6

Enter a number:

Sum of digits 15 is: 6

JAVA PROGRAM | COUNT THE NUMBER OF WORDS IN A STRING

public class WordCount {

public static void main(String args[]) {

String s = "Hello Java Selenium";

int count = 1;

for (int i = 0; i &lt; s.length() - 1; i++) {

    if ((s.charAt(i) == ' ') &amp;&amp; (s.charAt(i + 1) != ' ')) {

         count++;
}
    }

System.out.println("No of words in a string = " + count);
}
}

public class WordCount {

public static void main(String args[]) {

String s = "Hello Java Selenium";

int count = 1;

for (int i = 0; i < s.length() - 1; i++) {

if ((s.charAt(i) == ' ') && (s.charAt(i + 1) != ' ')) {

count++;

}

System.out.println("No of words in a string = " + count);

}

Output:

No of words in a string = 3

1	No of words in a string = 3

JAVA PROGRAM | DISPLAY INVERT TRIANGLE

import java.util.Scanner;

class InvertTriangle {

      public static void main(String args[]) {                       

      Scanner sc = new Scanner(System.in);

      System.out.println("Enter No to Invert Triangle:- ");

            int num = sc.nextInt();                       

            while (num &gt; 0) {

             for (int j = 1; j &lt;= num; j++) {

             System.out.print(" " + num + " ");
                          }

                       System.out.print("\n");

                       num--;
            }
     }
}

import java.util.Scanner;

class InvertTriangle {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter No to Invert Triangle:- ");

int num = sc.nextInt();

while (num > 0) {

for (int j = 1; j <= num; j++) {

System.out.print(" " + num + " ");

}

System.out.print("\n");

num--;

}

Output:

Enter No to Invert Triangle:-

6

 6  6  6  6  6  6

 5  5  5  5  5

 4  4  4  4

 3  3  3

 2  2

 1

Enter No to Invert Triangle:-

6 6 6 6 6 6

5 5 5 5 5

4 4 4 4

3 3 3

2 2

JAVA PROGRAM | DISPLAY MULTIPLICATION TABLE

import java.util.Scanner;

class MultiplicationTable {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

  System.out.println("Limit of Multiplication Table:");

  int num = sc.nextInt();

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

  for (int i = 1; i &lt;= num; i++) {

  for (int j = 1; j &lt;= num; j++) {

   System.out.print(" " + i * j + " ");
  }

   System.out.print("\n");
  }
 }
}

import java.util.Scanner;

class MultiplicationTable {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Limit of Multiplication Table:");

int num = sc.nextInt();

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

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

for (int j = 1; j <= num; j++) {

System.out.print(" " + i * j + " ");

}

System.out.print("\n");

}

Output:

Limit of Multiplication Table:

5

*****MULTIPLICATION TABLE*****

 1  2  3  4  5

 2  4  6  8  10

 3  6  9  12  15

 4  8  12  16  20

 5  10  15  20  25

Limit of Multiplication Table:

*****MULTIPLICATION TABLE*****

1 2 3 4 5

2 4 6 8 10

3 6 9 12 15

4 8 12 16 20

5 10 15 20 25

JAVA PROGRAM | FIND WHETHER NUMBER IS PRIME OR NOT

import java.util.Scanner;

class PrimeNo {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Check number is Prime or Not:- ");

    int num = sc.nextInt();                       

    int flag = 0;

    for (int i = 2; i &lt; num; i++) {

    if (num % i == 0) {

    System.out.println(num + " is not a Prime Number");

    flag = 1;

    break;
    }
    }

    if (flag == 0)

    System.out.println(num + " is a Prime Number");
    }
}

import java.util.Scanner;

class PrimeNo {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Check number is Prime or Not:- ");

int num = sc.nextInt();

int flag = 0;

for (int i = 2; i < num; i++) {

if (num % i == 0) {

System.out.println(num + " is not a Prime Number");

flag = 1;

break;

}

if (flag == 0)

System.out.println(num + " is a Prime Number");

}

Output:

Enter Number to check number is Prime or not:-

3

3 is a Prime Number

Enter Number to check number is Prime or not:-

3 is a Prime Number

JAVA PROGRAM | GENERATE RANDOM NUMBER IN JAVA

import java.util.Random;
import java.util.Scanner;

public class GenerateRandomNumber {           

public void generateRandomNumber(){

Random ran =  new Random();                       

Scanner sc = new Scanner(System.in);

System.out.println("How Random Numbers you want?:- ");

int value = sc.nextInt();                       

for(int i=0; i&lt;value;i++){

    int number = ran.nextInt(200);
    System.out.println(number);
   }
  }           

public static void main(String[] args) {

GenerateRandomNumber obj = new GenerateRandomNumber();
obj.generateRandomNumber();
}
}

import java.util.Random;

import java.util.Scanner;

public class GenerateRandomNumber {

public void generateRandomNumber(){

Random ran = new Random();

Scanner sc = new Scanner(System.in);

System.out.println("How Random Numbers you want?:- ");

int value = sc.nextInt();

for(int i=0; i<value;i++){

int number = ran.nextInt(200);

System.out.println(number);

}

public static void main(String[] args) {

GenerateRandomNumber obj = new GenerateRandomNumber();

obj.generateRandomNumber();

}

Output:

How Random Numbers you want?:- 2

65

175

How Random Numbers you want?:- 2

175

JAVA PROGRAM | METHOD OVERLOADING

package package_name;

public class Method_Overloading {

    public void Java1() {

     System.out.println("Java1()");

    }

    public void Java2(int i) {

     System.out.println("Java2(int i)");

    }

    public void Java3(int i, int j) {

     System.out.println("Java3(int i, int j)");

    }

    public void Java4(int i, int j, int k) {

     System.out.println("Java4(int i, int j, int k)");

    }           

    public static void main(String[] args) {

    Method_Overloading obj = new Method_Overloading();

     obj.Java1();

     obj.Java2(7);

     obj.Java3(7,8);           

     obj.Java4(7,8,10);

    }
}

package package_name;

public class Method_Overloading {

public void Java1() {

System.out.println("Java1()");

}

public void Java2(int i) {

System.out.println("Java2(int i)");

}

public void Java3(int i, int j) {

System.out.println("Java3(int i, int j)");

}

public void Java4(int i, int j, int k) {

System.out.println("Java4(int i, int j, int k)");

}

public static void main(String[] args) {

Method_Overloading obj = new Method_Overloading();

obj.Java1();

obj.Java2(7);

obj.Java3(7,8);

obj.Java4(7,8,10);

}

Output:

Java1()

Java2(int i)

Java3(int i, int j)

Java4(int i, int j, int k)

Java1()

Java2(int i)

Java3(int i, int j)

Java4(int i, int j, int k)

JAVA PROGRAM | ODD OR EVEN NUMBER

import java.util.Scanner;

class OddOrEven {

     public static void main(String args[]) {

          int x;

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

          Scanner sc = new Scanner(System.in);

          x = sc.nextInt();

          if (x % 2 == 0)

                    System.out.println("Number is Even.");
           else
                    System.out.println("Number is Odd.");
     }
}

import java.util.Scanner;

class OddOrEven {

public static void main(String args[]) {

int x;

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

Scanner sc = new Scanner(System.in);

x = sc.nextInt();

if (x % 2 == 0)

System.out.println("Number is Even.");

else

System.out.println("Number is Odd.");

}

Output:

Enter Number:-

15

Number is Odd.

Enter Number:-

Number is Odd.

JAVA PROGRAM | PRINT UPTO GIVEN NUMBER

import java.util.Scanner;

class Join {

     public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

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

   int num = sc.nextInt();

   String result = " ";

          for (int i = 1; i &lt;= num; i++) {

                result = result + i + " ";

          }
          System.out.println(result);
     }
}

import java.util.Scanner;

class Join {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

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

int num = sc.nextInt();

String result = " ";

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

result = result + i + " ";

}

System.out.println(result);

}

Output:

Enter Number:- 5

 1 2 3 4 5

Enter Number:- 5

1 2 3 4 5

JAVA PROGRAM | PYRAMID OF STARS USING NESTED FOR LOOPS

***

****

*****

public class JavaPyramid {

     public static void main(String[] args) {

           for (int i = 1; i &lt;= 5; i++) {

           for (int j = 0; j &lt; i; j++) {

           System.out.print("*");
           }

           // generate a new line
           System.out.println("");
        }
    }
}

public class JavaPyramid {

public static void main(String[] args) {

for (int i = 1; i <= 5; i++) {

for (int j = 0; j < i; j++) {

System.out.print("*");

}

// generate a new line

System.out.println("");

}

Output:

*

**

***

****

*****

***

****

*****

JAVA PROGRAM | REVERSE A NUMBER

import java.util.Scanner;

public class invertNumber {

public long doInvert(long number) {

long invert = 0;

while (number != 0) {

invert = (invert * 10) + (number % 10);

number = number / 10;
}

return invert;
}

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Number to Reverse:-  ");

int lnum = sc.nextInt();

invertNumber input = new invertNumber();

System.out.println("Input value : " + lnum);

System.out.println("Inverted value : " + input.doInvert(lnum));
}
}

import java.util.Scanner;

public class invertNumber {

public long doInvert(long number) {

long invert = 0;

while (number != 0) {

invert = (invert * 10) + (number % 10);

number = number / 10;

}

return invert;

}

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter Number to Reverse:- ");

int lnum = sc.nextInt();

invertNumber input = new invertNumber();

System.out.println("Input value : " + lnum);

System.out.println("Inverted value : " + input.doInvert(lnum));

}

Output:

Enter Number to Reverse:- 

123

Input value : 123

Inverted value : 321

Enter Number to Reverse:-

123

Input value : 123

Inverted value : 321

JAVA PROGRAM | REVERSED PYRAMID USING FOR LOOP

12345

1234

123

public class JavaPyramid {

      public static void main(String[] args) {

           for (int i = 5; i &gt; 0; i--) {

           for (int j = 0; j &lt; i; j++) {

            System.out.print(j + 1);

            }

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

public class JavaPyramid {

public static void main(String[] args) {

for (int i = 5; i > 0; i--) {

for (int j = 0; j < i; j++) {

System.out.print(j + 1);

}

System.out.println("");

}

Output:

12345

1234

123

JAVA PROGRAM | STATIC AND NON-STATIC IN JAVA

package package_name;

public class StaticAndNonStaticInJava {

            int i=1;
            int j=2;

            static int p=3;
            static int k=4;

            public void test1() {

            System.out.println("test 1 non static");
            }

            public static void test2() {

            System.out.println("test 2 static");
            }

            public void test3() {

            System.out.println("test 3 non static");
            }

            public static void test4() {

            System.out.println("test 4 static");
            }

            public static void main(String[] args) {

               StaticAndNonStaticInJava obj = new StaticAndNonStaticInJava();

               obj.test1();
               obj.test3();

               System.out.println(obj.i);
               System.out.println(obj.j);

               StaticAndNonStaticInJava.test2();
               StaticAndNonStaticInJava.test4();

               System.out.println(StaticAndNonStaticInJava.k);
               System.out.println(StaticAndNonStaticInJava.p);
       }
}

package package_name;

public class StaticAndNonStaticInJava {

int i=1;

int j=2;

static int p=3;

static int k=4;

public void test1() {

System.out.println("test 1 non static");

}

public static void test2() {

System.out.println("test 2 static");

}

public void test3() {

System.out.println("test 3 non static");

}

public static void test4() {

System.out.println("test 4 static");

}

public static void main(String[] args) {

StaticAndNonStaticInJava obj = new StaticAndNonStaticInJava();

obj.test1();

obj.test3();

System.out.println(obj.i);

System.out.println(obj.j);

StaticAndNonStaticInJava.test2();

StaticAndNonStaticInJava.test4();

System.out.println(StaticAndNonStaticInJava.k);

System.out.println(StaticAndNonStaticInJava.p);

}

Output:

test 1 non static

test 3 non static

1

2

test 2 static

test 4 static

4

3

test 1 non static

test 3 non static

test 2 static

test 4 static

JAVA PROGRAM | SWAP TWO VALUES

import java.util.Scanner;

class Swap {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

  System.out.println("Enter num1:- ");

  int num1 = sc.nextInt();

  System.out.println("Enter num2:- ");

  int num2 = sc.nextInt();                       

  System.out.println("\n***Before Swapping***");

  System.out.println("Number 1 : " + num1);

  System.out.println("Number 2 : " + num2);

  // Swap logic

  num1 = num1 + num2;

  num2 = num1 - num2;

  num1 = num1 - num2;

  System.out.println("\n***After Swapping***");

  System.out.println("Number 1 : " + num1);

System.out.println("Number 2 : " + num2);
}
}

import java.util.Scanner;

class Swap {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter num1:- ");

int num1 = sc.nextInt();

System.out.println("Enter num2:- ");

int num2 = sc.nextInt();

System.out.println("\n***Before Swapping***");

System.out.println("Number 1 : " + num1);

System.out.println("Number 2 : " + num2);

// Swap logic

num1 = num1 + num2;

num2 = num1 - num2;

num1 = num1 - num2;

System.out.println("\n***After Swapping***");

System.out.println("Number 1 : " + num1);

System.out.println("Number 2 : " + num2);

}

Output:

Enter num1:-

20

Enter num2:-

30

***Before Swapping***

Number 1 : 20

Number 2 : 30

***After Swapping***

Number 1 : 30

Number 2 : 20

Enter num1:-

Enter num2:-

***Before Swapping***

Number 1 : 20

Number 2 : 30

***After Swapping***

Number 1 : 30

Number 2 : 20

JAVA PROGRAM | WHETHER GIVEN NO IS ARMSTRONG OR NOT

Note: Armstrong number is a number that is equal to the sum of cubes of its digits.

e.g:- 153 = (1*1*1)+(5*5*5)+(3*3*3)

import java.util.Scanner;

class Armstrong {

      public static void main(String args[]) {                       

      Scanner sc = new Scanner(System.in);

      System.out.println("Number is Armstrong or Not ?");

      int num = sc.nextInt();                       

      int n = num;

      int check = 0, remainder;

      while (num &gt; 0) {

          remainder = num % 10;

          check = check + (int) Math.pow(remainder, 3);

          num = num / 10;

         }

      if (check == n)

        System.out.println(n + " is an Armstrong Number");
      else

        System.out.println(n + " Not a Armstrong Number");
      }
}

import java.util.Scanner;

class Armstrong {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

System.out.println("Number is Armstrong or Not ?");

int num = sc.nextInt();

int n = num;

int check = 0, remainder;

while (num > 0) {

remainder = num % 10;

check = check + (int) Math.pow(remainder, 3);

num = num / 10;

}

if (check == n)

System.out.println(n + " is an Armstrong Number");

else

System.out.println(n + " Not a Armstrong Number");

}

Output:

Number is Armstrong or Not?

153

153 is an Armstrong Number

Number is Armstrong or Not?

153

153 is an Armstrong Number

Java and Selenium are the best automation tools for QA. And these skills are essential for each QA engineer involved in test automation.

Therefore, Above programs, we are presenting a set of Java coding programs to help test automation developers during job interviews.

Visit : Selenium Programs for Interview

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