Tutorial Playlist
191 Lessons1. Introduction to Java
2. What is Java?
3. History of Java
4. Java Tutorial for Beginners
5. How Do Java Programs Work?
6. JDK in Java
7. C++ Vs Java
8. Java vs. Python
9. Java vs. JavaScript
10. From Java Source Code to Executable
11. How to Install Java in Linux
12. How to Install Java in Windows 10
13. Java Hello World Program
14. Structure of Java Program and Java Syntax
15. Operators in Java
16. Java If-else
17. Switch Case In Java
18. Loops in Java
19. Infinite loop in Java
20. For Loop in Java
21. For Each Loop in Java
22. Constructor in Java
23. Constructor Overloading in Java
24. Copy Constructor in Java
25. Default Constructor in Java
26. Parameterized Constructors in Java
27. Constructor Chaining In Java
28. Finalize Method in Java
29. Static Method in Java
30. Equals Method in Java
31. Abstract Method in Java
32. toString() Method in Java
33. Difference between equals method in Java
34. Inheritance in Java
35. Multiple Inheritance in Java
36. Hierarchical Inheritance in Java
37. Java Classes and Objects
38. Scanner Class in java
39. All classes in java are inherited from which class
40. What is Nested Class in Java
41. POJO Class in Java
42. Anonymous Class in Java
43. Final Class in Java
44. Object Class in Java
45. Packages in Java
46. Access Modifiers in Java
47. Static Keyword In Java
48. Final Keyword in Java
49. Checked and Unchecked Exceptions in Java
50. User Defined Exception in Java
51. Error vs. Exception in Java
52. Java Collection
53. Collections in Java
54. Garbage Collection in Java
55. Generics In Java
56. Java Interfaces
57. Functional Interface in Java
58. Marker Interface in Java
59. Streams in Java
60. Byte stream in java
61. File Handling in Java
62. Thread in Java
63. Thread Lifecycle In Java
64. Daemon Thread in Java
65. Thread Priority in Java
66. Deadlock in Java
67. String Pool in Java
68. Java Database Connectivity(JDBC)
69. Design Patterns in Java
70. Functional Programming in Java
71. OOP vs Functional vs Procedural
72. Heap Memory and Stack Memory in Java
73. Applet in Java
74. Java Swing
75. Java Frameworks
76. Hibernate Framework
77. JUnit Testing
78. How to Install Eclipse IDE for Java?
79. Command line arguments in Java
80. Jar file in Java
81. Java Clean Code
82. OOPs Concepts in Java
83. Java OOPs Concepts
84. Overloading vs Overriding in Java
85. Java 8 features
86. String in Java
87. String to int in Java
88. Why String Is Immutable in Java?
89. Primitive Data Types in Java
90. Non-Primitive Data Types in Java
91. This and Super Keyword in Java
92. HashMap in Java
93. Comparable And Comparator in Java
94. Type Casting in Java
95. Arrays Sort in Java with Examples
96. Variable Hiding and Variable Shadowing in Java
97. Enum in Java
98. Substring in Java
99. Pattern Programs in Java
100. Hashcode in Java
101. What is ByteCode in Java?
102. How To Take Input From User in Java
103. GCD of Two Numbers in Java
104. Linked List in Java
105. Arithmetic Operators in Java
106. Conditional Operators in Java
107. Stack and Queue in Java
108. Array Length in Java
109. Number Pattern Program in Java
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110. Split in java
111. Map In Java
112. Difference Between Throw and Throws in Java
113. Difference Between Data Hiding and Abstraction
114. HashSet in Java
115. String Length in Java
116. Factorial Using Recursion in Java
117. DateFormat in Java
118. StringBuilder Class in java
119. Instance variables in Java
120. Java List Size
121. Java APIs
122. Reverse an Array in Java
123. StringBuffer and StringBuilder Difference in Java
124. Java Program to Add Two Numbers
125. String to Array in Java
126. Regular Expressions in Java
127. Identifiers in Java
128. Data Structures in Java
129. Set in Java
130. Pass By Value and Call By Reference in Java
131. Try Catch in Java
132. Bubble Sort in Java
133. Caesar Cipher Program in Java
134. Queue in Java
135. Object Creation in Java
136. Multidimensional Array in Java
137. How to Read a File in Java
138. String Comparison in Java
139. Volatile Keyword in Java
140. Control Statements in Java
141. Jagged Array in Java
142. Two-Dimensional Array in Java
143. Java String Format
144. Replace in Java
145. charAt() in Java
146. CompareTo in Java
147. Matrix Multiplication in Java
148. Static Variable in Java
149. Event Handling in Java
150. parseInt in Java
151. Java ArrayList forEach
152. Abstraction in Java
153. String Input in Java
154. Logical Operators in Java
155. instanceof in Java
156. Math Floor in Java
157. Selection Sort Java
158. int to char in Java
159. Stringtokenizer in java
160. Implementing and Manipulating Abs in Java
161. Char array to string in java
162. Convert Double To String In Java
163. Deque in Java
164. Converting a List to an Array in Java
165. The Max function in java
166. Removing whitespace from string in java
167. String arrays in Java
168. Strings in Java Vs Strings in Cpp
169. Sum of digits of a number in Java
170. Art of Graphical User Interfaces
171. Trim in Java
172. RxJava
173. Recursion in Java
174. HashSet Java
175. Difference Between Java and Python
176. Square Root in Java
177. Reverse A String in Java
178. Even Odd Program in Java
179. Fibonacci Series in Java
180. Prime Number Program in Java
181. Java Program to Print Prime Numbers in a Given Range
182. Java Leap Year Program
183. Swapping of Two Numbers in Java
184. LCM of Two Numbers in Java
185. Math.sqrt() Function in Java
186. Area of Triangle in Java
187. Sort a String In Java
188. Factorial Program in Java
189. Javafx
190. Lambda expression in java
191. Setup Java Home and IDE on macOS
Java's flexibility and robustness set it apart. Yet its true prowess comes to light when creating number pattern programs in Java. These programs, integral to Java learning, underpin the essence of nested loops and control statements. They also offer a stepping stone to understanding algorithms - the heart of computational thinking. They sharpen your ability to structure logic while coding and hone your debugging skills. To take Java expertise to a whole new level, learning number pattern programs in Java becomes an absolute necessity. This discourse aims to enlighten you about the importance and intricacies of these programs, leading you onto the path of true Java mastery.
In the realm of coding, number pattern programs in Java hold a special place. They're miniature puzzles demanding logical thinking and a clear understanding of Java syntax. The road to understanding them may seem steep, yet the view from the top is worth the climb. This guide offers a map to this road, laying out a clear path to conquering number pattern programs in Java. It will present examples of commonly used patterns, explain their logic and structure, and show how to code them efficiently. This guide will also introduce advanced patterns, pushing the boundaries of your Java skills.
One of the top Java number pattern programs is the Pyramid pattern. This pattern is a classic exercise for beginners. It uses nested loops to create an impressive pyramid-like shape made of numbers. Understanding this program bolsters your logic and mastery of nested loops.
Let's explore a simple Pyramid pattern in Java:
The code for this Pyramid pattern in Java is:
This code utilizes two for-loops. The outer loop controls the number of rows, while the inner loop controls how many times the number prints in each row. It's a beautiful blend of logic and code execution. This pattern program offers an engaging way to understand the power of nested loops in Java and forms a fundamental stepping stone in your journey of mastering Java programming.
In Java, pattern programs involve nested loops, where each loop serves a specific purpose. They're an excellent way to understand how loops work, especially when one loop is nested inside another. A solid understanding of these concepts can greatly enhance your proficiency in Java.
Let's delve into the Diamond pattern. It's a bit more complex than the previous example, but highly enriching to understand.
Consider a Diamond pattern:
This pattern can be coded in Java as follows:
This pattern program uses nested loops to create the diamond shape. The first outer loop and its nested loops create the top half of the diamond, while the second outer loop and its nested loops create the bottom half. The logic for spaces and the number to print is determined by the loop variables.
1. Start Pattern
This pattern is formed by printing a sequence of asterisks in a horizontal line.
Example
Code:
2. Right Triangle Star Pattern Program in Java
This pattern forms a right triangle with asterisks, where each row has one more asterisk than the previous row.
Example:
Code:
3. Left Triangle Star Pattern Program in Java
This pattern creates a left-aligned triangle with asterisks, where each row has the same number of asterisks.
Example:
Code
4. Pyramid Star Pattern
This pattern creates a pyramid-like structure with asterisks, where each row has a gradually increasing number of asterisks.
Example:
Code
5. Diamond Shape Pattern
This pattern forms a diamond shape with asterisks, consisting of both ascending and descending rows of asterisks.
Example:
Code
6. Mirrored Right Triangle Star Pattern Program in Java
This pattern creates a right-aligned triangle with asterisks, where each row has a decreasing number of asterisks.
Example:
Code
7. Reverse Pyramid Pattern in Java
This pattern forms an inverted pyramid with asterisks, where each row has a gradually decreasing number of asterisks.
Example:
Code
8. Downward Triangle Star Pattern Program in Java
This pattern forms a downward-facing triangle with asterisks, where each row has a gradually decreasing number of asterisks.
Example:
Code
9. Right Down Mirror Star Pattern
This pattern forms a right-aligned triangle with asterisks, where each row has a decreasing number of asterisks, and the pattern is mirrored vertically downward.
Example:
Code
10. Right Pascal's Triangle
This pattern represents Pascal's Triangle using asterisks, where each row corresponds to the coefficients of the binomial expansion.
Example:
Code
11. Left Pascal's Triangle
This pattern represents Pascal's Triangle using asterisks, where each row corresponds to the coefficients of the binomial expansion.
Example:
Code
12. Sandglass Star Pattern Program in Java
This pattern forms a sandglass shape with asterisks, consisting of both ascending and descending rows of asterisks.
Example:
Code
13. Alphabet Pattern Program in Java
This pattern forms the shape of an alphabet letter using asterisks.
Example for the letter 'A':
Code
14. Triangle Star Pattern Program in Java
This pattern forms a triangle shape with asterisks, where each row has a gradually increasing number of asterisks.
Example:
Code
15. Down Triangle Pattern
This pattern forms a downward-facing triangle shape with asterisks, where each row has a gradually decreasing number of asterisks.
Example:
Code
16. Diamond Star Pattern
This pattern forms a diamond shape with asterisks, consisting of both ascending and descending rows of asterisks.
Example
Code
To print the "1 23 45*6" pattern in Java, you can use the following code:
Output
In this code, we use nested loops to control the pattern. The outer loop runs for three iterations, representing the three groups of numbers. The inner loop prints the numbers and asterisks in each group. The ‘number’ variable is incremented after each number is printed. We check whether to print an asterisk based on the condition ‘j < i’ to ensure that an asterisk is not printed after the last number in each group.
Here's a simple Java program that uses the Scanner class to take an integer input from the user and print a pyramid of that height:
In this program, the outer loop for (int i = 0; i < height; i++) controls the number of lines in the pyramid, which is equal to the height input by the user.
The inner loops print each line of the pyramid. The first inner loop for (int j = 0; j < height - i - 1; j++) prints the leading spaces, and the second inner loop for (int k = 0; k <= i; k++) prints the stars. The number of stars in each line is one more than the line number (assuming the first line number is 0).
Please note that the height of the pyramid is entered by the user through the console. So, when you run this program, it will wait for your input. After entering a number, the program will print a pyramid of that height.
The output will depend on the number entered by the user. Let's say the user enters 5, the output will be:
This is a pyramid of height 5. Each line contains stars separated by a space, and the number of stars in each line is equal to the line number (starting from 1). The leading spaces on each line create the pyramid shape. The number of leading spaces is equal to the difference between the height of the pyramid and the line number.
Here's an example of a string pattern program in Java that prints a specific pattern:
Output
In this program, we have a string ‘input’ containing the word "HELLO". We use two nested loops to iterate over the characters of the string and print the pattern. The outer loop controls the number of rows, and the inner loop prints the characters up to the current row. We use the ‘charAt()’ method to access each character in the string. Finally, we print a space after each character to separate them.
You can modify the ‘input’ variable to any string of your choice, and the program will generate the corresponding pattern.
A number triangle pattern in Java refers to a pattern where a series of numbers are arranged in the shape of a triangle. Each row of the triangle contains numbers that follow a specific pattern or sequence. The pattern starts with a single number in the first row and gradually adds more numbers in subsequent rows.
Here's an example of a number triangle pattern program in Java:
Output:
In this program, we have a variable ‘rows’ which represents the number of rows in the triangle. We also have a variable ‘number’ to keep track of the current number to be printed.
We use two nested loops to control the printing of spaces and numbers. The outer loop iterates over the rows, and the inner loops handle the spaces and numbers within each row.
The first inner loop prints the spaces before the numbers, based on the row number. The second inner loop prints the numbers, incrementing the ‘number’ with each iteration.
A "Character Pattern Program in Java" refers to a pattern formed by arranging characters or symbols in a specific shape or sequence. Instead of numbers, this type of pattern involves using characters, such as alphabets, symbols, or any other printable characters available in Java.
Character patterns in Java can be created using nested loops and string manipulation techniques. The pattern can take various forms, including triangles, rectangles, diamond shapes, or even custom shapes based on specific characters or symbols.
Here are a few examples of character pattern programs in Java
1. Right Triangle Alphabetic Pattern
This pattern forms a right triangle using alphabets, where each row has one more alphabet than the previous row.
Example:
Code
2. Repeating Alphabet Pattern
This pattern creates a pattern where a given alphabet is repeated in each row.
Example:
Code
3. K-shape Alphabet Pattern
This pattern forms the shape of the letter 'K' using the alphabet.
Example:
Code
4. Triangle Character Pattern
This pattern forms a triangle shape using a repeated character or symbol.
Example:
Code
5. Diamond Character Pattern
This pattern forms a diamond shape using a repeated character or symbol.
Example:
Code
In this article, we explored various character patterns in Java, including right triangle alphabetic patterns, repeating alphabet patterns, K-shape alphabet patterns, triangle character patterns, and diamond character patterns. Each pattern demonstrated the use of nested loops, conditional statements, and character manipulation to achieve the desired output.
Character patterns are not only fun to create but also serve as great exercises for enhancing logical thinking, loop control, and string manipulation skills. By understanding the underlying principles and applying them creatively, you can generate an array of fascinating patterns using alphabets or any other printable characters available in Java.
1. What is the process of creating a custom character pattern using special symbols or non-alphabetic characters in Java?
Indeed, Java offers the flexibility to use any printable character or symbol for the creation of custom character patterns. This can be achieved by leveraging the ASCII values of the characters or by directly using Unicode symbols to portray your desired pattern.
2. How can I develop a character pattern in Java that repeats a specific word or phrase instead of just a single character?
In order to craft a character pattern that replicates specific words or phrases, you would need to define a string variable and manipulate it within a loop structure. Through the usage of string concatenation or substring operations, you can attain the desired repetition and alignment in the pattern.
3. How is it possible to create animated character patterns in Java?
By employing advanced concepts such as multithreading, graphical user interfaces (GUIs), or external libraries like JavaFX, you can design dynamic character patterns that evolve over time, providing an animated visual effect.
PAVAN VADAPALLI
Director of Engineering
Director of Engineering @ upGrad. Motivated to leverage technology to solve problems. Seasoned leader for startups and fast moving orgs. Working …Read More
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upGrad does not grant credit; credits are granted, accepted or transferred at the sole discretion of the relevant educational institution offering the diploma or degree. We advise you to enquire further regarding the suitability of this program for your academic, professional requirements and job prospects before enr...