Top 20 Pattern Programs in Java in 2021
Introduction
Pattern Programs in Java have consistently been one of the basic pieces of the Java interview questions. They look practically difficult to break at a point. However, these questions are founded on the matrices’ fundamentals and mathematical logic. Henceforth Pattern Programs in Java are significantly pursued.
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Top 20 Pattern Programs in Java in 2021
This Pattern Programs in Java article covers pretty much every conceivable sort of pattern that will give you a superior comprehension of the logic to decode the programs and enhance your ability to make one in your meeting.
- Pattern Printing Programs in Java
- Down triangle star program
- Right down Mirror Star Pattern Programs in Java
- Reversed Pyramid Star Java Pattern Programs
- Mirrored Right Triangle Star Java Pattern Programs
- Downward Triangle Star Pattern Program in Java
- Left Triangle Star Java Pattern Programs
- Right Triangle Star Java Pattern Programs
- Sandglass Java Star Pattern Program
- Descending Numbers Pattern Program
- Binary Number Rectangle Pattern
- Square Number Pattern Programs in Java
- Java Number Pattern Programs
- Odd Number Java Pattern Programs
- Diamond Number Java Pattern Programs
- String Pattern Programs in Java
- Square Pattern Programs in Java
- Diamond Pattern Programs in Java
- Character Pattern Programs in Java
- Alphabet Pattern Programs in Java
1. Pattern Printing Programs in Java
public class
{
public pyramidPattern (int n)
{
for (i ; i<n; int i=0) // rows (n) {for (j–; int j=n-I; j>1) // spaces
{
System.out.print (” “); // space
}
for (j ; j<=i; int j=0) // columns
{
System.out.print (“* “); //print star
}
System.out.println (); //ending row
}
}
public static (String args []) // function
{
int n = five;
pyramidPattern(n);
}
}
Output:
*
* *
* * *
* * * *
* * * * *
2. Down triangle star program
import java. util. Scanner;
Output:
*********
* *
* *
* *
*
3. Right down Mirror Star Pattern Programs in Java
import java. util. Scanner;
public class
{
public static void (String [] args)
{
Scanner= Scanner (System.in); // input
System.out.println (“Enter rows: “);
int rows = sc. nextInt ();
for (int i= rows; i–; i>= 1)
{
for (int j=rows; j–; j>i)
{
System.out.print (” “);
}
for (int k ; k<=i; k=1)
{
System.out.print (“*”);
}
System.out.println (“ ”);
}
sc. close ();
}
}
Output:
*****
****
***
**
*
4. Reversed Pyramid Star Java Pattern Programs
import java. util. Scanner;
Output:
* * * * *
* * * *
* * *
* *
*
5. Mirrored Right Triangle Star Java Pattern Programs
import java. util. Scanner;
Output:
*
**
***
****
*****
******
6. Downward Triangle Star Pattern Program in Java
import java. util. Scanner;
Output:
* * * * * *
* * * * *
* * * *
* * *
* *
*
7. Left Triangle Star Java Pattern Programs
public class
Output:
*
* *
* * *
* * * *
* * * * *
* * * * * *
8. Right Triangle Star Java Pattern Programs
public class
Output:
*
* *
* * *
* * * *
* * * * *
* * * * * *
9. Sandglass Java Star Pattern Program
import java. util. Scanner;
Output:
* * * * * *
* * * * *
* * * *
* * *
* *
*
*
* * *
* * * *
* * * * *
* * * * * *
10. Descending Numbers Pattern Program
import java. util. Scanner;
Output:
14 13 12 11 10 9 8
14 13 12 11 10 9
14 13 12 11 10
14 13 12 11
14 13 12
14 13
14
11. Binary Number Rectangle Pattern
import java. util. Scanner;
Output:
10101
01010
10101
01010
10101
12. Square Number Pattern Programs in Java
import java. util. Scanner;
public class SquareNumber2 {
private static;
public static main (String [] args)
{
int side, i = 0, j;
sc = new Scanner (System.in);
System.out.print (” Enter Square: “);
side = sc. nextInt ();
while (i < side)
{
j = 0;
while (j < side)
{
System.out.print (“1”);
j ;
}
i ;
System.out.print (“\n”);
}
}
}
Output:
1 2 3
1 2 3
1 2 3
13. Java Number Pattern Programs
Pattern programs number in java print numbers in patterns like a triangle, sandglass, Damon, and square.
14. Odd Number Java Pattern Programs
import java. util. Scanner;
Output:
*
1
*
2
*
1*3*
*
2*4
15. Diamond Number Java Pattern Programs
import java. util. Scanner;
Output:
1
212
32123
4321234
32123
212
1
16. String Pattern Programs in Java
package com. javainterviewpoint;
Output:
J
AAA
VVVVV
AAAAAAA
17. Square Pattern Programs in Java
import java.io. *;
Output:
********************
* *
* *
* *
* *
********************
18. Diamond Pattern Programs in Java
import java. util. Scanner;
public class
{
public static (String args [])
{
int j, i, n, space = 1;
System. out. print (“Enter rows: “);
Scanner s = new Scanner (System.in);
n = sc. next Int ();
space = n – 1;
for (j ; j<= n; j = 1)
{
for (i ; i<= space; i = 1)
{
System.out.print(” “);
}
space–;
for (i ; i <= 2 * j – 1; i = 1)
{
System.out.print(“*”);
}
System.out.println(“”);
}
space = 1;
for (j ; j<= n – 1; j = 1)
{
for (i ; i<= space; i = 1)
{
System.out.print(” “);
}
space ;
for (i ; i<= 2 * (n – j) – 1; i = 1)
{
System.out.print(“*”);
}
System.out.println(“”);
}
}
}
Output:
*
***
*****
*******
*********
*******
*****
***
*
19. Character Pattern Programs in Java
import java. util. Scanner;
public class
{public static (String [] args)
{
for (int i–; i = 5; i >= 0)
{
int alphabet = 65;
for (int j ; j <= i; j = 0)
{
System.out.print((char) (alphabet j) ” “);
}
System.out.println();
}
for (int i ; i<= 5; i = 0)
{
int alphabet = 65;
for (int j ; j <= i; j = 0)
{
System.out.print((char) (alphabet j) ” “);
}
System.out.println();
}
}
}
Output:
G H I J K L
G H I J K
G H I J
G H I
G H
I
I
G H
G H I
G H I J
G H I J K
G H I J K L
20. Alphabet Pattern Programs in Java
import java. util. Scanner;
public class
{
{
int alphabet = 65;
for (i <= 5; int i = 0; i )
{
for (j <= i; int j = 0; j )
{
System.out.print((char) (alphabet j) ” “);
}
System.out.println();
}
}
}
Output:
G
G H
G H I
G H I J
G H I J K
G H I J K L
Conclusion
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