Write a Java Program to Find Random Number

package com.tutorial4u;

import java.util.Random;

import java.util.Scanner;

public class RandomNumber {

     public static void main(String[] args)

    {

        int maxRange;

        Scanner sc = new Scanner(System.in);

        Random rand = new Random();

       

        System.out.print("Please enter maximum range: ");

        maxRange = sc.nextInt();

       

        for(int i=1; i<=10; i++)

        {

            System.out.println(rand.nextInt(maxRange));

        }

    }

}

Output:

Please enter maximum range: 500

223

263

397

375

371

468

71

124

377

374

Note : Sometimes situation arises where random numbers are required to be generated between the ranges.

package com.tutorial4u;

import java.util.Random;

import java.util.Scanner;

public class RandomNumber {

     public static void main(String[] args)

    {

           Scanner sc = new Scanner(System.in);

        System.out.print("Please enter Minimum Range : ");

        int minRange = sc.nextInt();

        System.out.print("Please enter Maximum Range : ");

        int maxRange = sc.nextInt();

        Random rand = new Random();

        int value = rand.nextInt(maxRange - minRange) + minRange;

        System.out.println(value);

    }

}

Output :

Please enter Minimum Range : 1000

Please enter Maximum Range : 5000

4304

Print Semi Column without using semi column(;)

package com.tutorial4u;

public class SemiColonsPrint {

     public static void main(String[] args) {

              if(System.out.printf("%C",59) != null){

                  

              }         

     }

}

Output :  ;

Write a Java Program to draw number pattern.

Example : 1

package com.tutorial4u;

import java.util.Scanner;

public class NumberPattern {

     public static void main(String[] args) {

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

           Scanner sc = new Scanner(System.in);

           int num = sc.nextInt();

           for(int i=1;i<=num;i++){

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

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

                }

                System.out.println();

           }

     }

}

Output : 

Enter number of rows : 6

1

12

123

1234

12345

123456

Example : 2

package com.tutorial4u;

import java.util.Scanner;

public class NumberPattern {

     public static void main(String[] args) {

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

           Scanner sc = new Scanner(System.in);

           int num = sc.nextInt();

           for(int i=1;i<=num;i++){

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

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

                }

                System.out.println();

           }

     }

}

Output :

Enter number of rows : 6

1

21

321

4321

54321

654321

Example :3

package com.tutorial4u;

import java.util.Scanner;

public class NumberPattern {

     public static void main(String[] args) {

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

           Scanner sc = new Scanner(System.in);

           int num = sc.nextInt();

           for(int i=1;i<=num;i++){

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

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

                }

                System.out.println();

           }

     }

}

Output :

Enter number of rows : 6

1

22

333

4444

55555

666666

Write a Java Program to print Star Pattern

Example : 1

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i =1;i<=num;i++){

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

                      System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 5

*

**

***

****

*****

Example : 2

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i =num;i>=1;i--){

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

                      System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 7

*******

******

*****

****

***

**

*

Example : 3

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i = num;i>=1;i--){

                for(int j =num;j>i;j--){

                      System.out.print(" ");

                }

                for(int k=1;k<=i;k++)

                {

                System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output :

Enter the number of rows : 7

*******

 ******

  *****

   ****

    ***

     **

      *

Example : 4

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i = num;i>=1;i--){

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

                      System.out.print(" ");

                }

                for(int k=num;k>=i;k--)

                {

                System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 8

       *

      **

     ***

    ****

   *****

  ******

 *******

Example : 5

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           {

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

                {

                for(int j=num-1; j>=i; j--)

                {

                System.out.print(" ");

                }

                for(int k=1; k<=(2*i-1); k++)

                {

                System.out.print("*");

                }

                System.out.println("");

                }

           }

     }

}

Output : 

Enter the number of rows : 5

    *

   ***

  *****

 *******

*********

Example:6

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           {

            for(int i=num;i>=1;i--)

            {

                 for(int j = num ; j>i;j--)

                 {

                       System.out.print(" ");

                 }

                for(int k=1;k<(i*2);k++)

                {

                System.out.print("*");

                }

                System.out.println();

                }

           }

     }

}

Output : 

Enter the number of rows : 7

*************

 ***********

  *********

   *******

    *****

     ***

      *