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
Now Reading
107. Stack and Queue in Java
108. Array Length in Java
109. Number Pattern Program in Java
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
Conditional operators in Java are essential for creating logical expressions that yield boolean results. They control the flow of execution in a Java program, enabling different actions or statements based on specific conditions.
By using conditional operators, developers can create dynamic decision-making structures. It also helps improve the functionality and adaptability of their Java applications.
Conditional operators, or special operators in Java, are the essential elements developers need to control condition-based executions. They help evaluate boolean expressions and enable decision-making inside the code.
Types of Conditional Operators in Java
In Java, there are three types of conditional operators:
The conditional AND is a binary operator denoted by the symbol “&&” which combines boolean expressions and returns true only if both expressions are true. The result will return false if either expression is false.
Syntax: condition1 && condition2
It evaluates both condition1 and condition2.
Here is an example:
public class Main {
public static void main(String[] args) {
int x = 5;
int y = 10;
boolean condition1 = (x > 0); // true
boolean condition2 = (y > 5); // true
boolean result = condition1 && condition2;
System.out.println(result); // Output: true
}
}
In the above program, the main method is the program's entry point. It creates two integer variables, x, and y, with initial values of 5 and 10, respectively. Then, two boolean variables, condition1 and condition2, are defined based on the given conditions.
Next, the result variable is assigned the value of the logical AND operation (&&) between condition1 and condition2. Finally, the result is printed to the console, which in this case will be true.
The conditional OR operator is denoted by the symbol “||” symbol. It combines two boolean expressions, which return true if either expression evaluates to true. The result will be false if the expressions are false.
Syntax: condition1 || condition2
It evaluates both condition1 and condition2.
Here is an example:
public class Main {
public static void main(String[] args) {
int x = 5;
int y = 10;
boolean condition1 = (x > 0); // true
boolean condition2 = (y < 5); // false
boolean result = condition1 || condition2;
System.out.println(result); // Output: true
}
}
In the example above, condition condition1 is true because x is greater than 0. Condition condition2 is false because y is not less than 5. When we apply the Conditional-OR operator (||) between them, the overall result is true because at least one of the conditions (condition1) evaluates to true. If both conditions were false, the result would be false.
In Java, the ‘?:” symbol represents the ternary operator. A conditional operator in Javascript offers a straightforward way to execute simple if-else statements.
Syntax: condition ? expression1 : expression2
It evaluates the condition and returns either expression1 or expression2 based on the result of the condition. It is commonly used as a shorthand for simple if-else statements.
Here is a short example:
In the example above, we have two variables x and y with initial values of 5 and 10, respectively. The ternary operator (x > y) ? x : y is used to assign the value of either x or y to the result variable based on the condition (x > y).
If the condition (x > y) is true, the program will assign the value of x is to result. Otherwise, it will assign the value of y to result.
Finally, the program prints the value of result to the console.
The ternary operator assigns an expression or value to execute a simple if-else condition.
Ternary operators offer a clear and comprehensive option for coding a full if-else statement.
You can use a ternary operator in the following cases:
Initializing variables: Ternary operator is applicable when initializing condition-based variables. You can use the ternary operator to assign different values to condition-based variables. Initializing variables helps make code initialization straightforward.
Assigning a variable: You can use ternary operators to set the value to a condition-based variable instead of writing a separate if-else statement. Giving a variable makes help the code more compact and understandable.
Inline conditional expressions: Ternary operators allow you to write small expressions that require assessment based on a condition. Ternary operators will enable you to code such expressions inline without needing a specific if-else statement.
Here are some more ternary operator examples to understand conditional operations in Java better:
public class TernaryIfElseExample {
public static void main(String[] args) {
int number = 10;
String result = (number > 0) ? "Positive" : "Negative or Zero";
System.out.println("Number is " + result);
}
}
public class TernaryIfElseIfExample {
public static void main(String[] args) {
int marks = 85;
String grade = (marks > 90) ? "A" : (marks > 80) ? "B" : (marks > 70) ? "C" : "D";
System.out.println("Grade: " + grade);
}
}
public class TernarySwitchCaseExample {
public static void main(String[] args) {
String day = "Sunday";
int dayNumber = (day.equals("Monday")) ? 1 : (day.equals("Tuesday")) ? 2 :
(day.equals("Wednesday")) ? 3 : (day.equals("Thursday")) ? 4 :
(day.equals("Friday")) ? 5 : (day.equals("Saturday")) ? 6 : 7;
System.out.println("Day Number: " + dayNumber);
}
}
The expression evaluation includes computing an expression's values while adhering to the rules and preferences of Java operators.
Expressions consist of many operands, including method calls, literals, and variables. These operands are combined using operators to form complex expressions.
When evaluating an expression, Java follows the rules to determine the result. The evaluation of expressions in Java follows the operator precedence and associativity rules.
Java assesses operators with higher importance first, and if multiple operators have the same priority, their assessment depends on associativity (left-to-right or right-to-left).
public class TernaryOperatorExample {
public static void main(String[] args) {
int number = 10;
String result = (number > 0) ? ((number % 2 == 0) ? "Even" : "Odd") : "Negative";
System.out.println("The number is " + result);
}
}
In this example, we have a variable number with a value of 10. We use nested ternary operators to determine if the number is positive or negative and then further determine if it is even or odd.
The expression (number > 0) is the condition for the outermost ternary operator. If the condition is true (number is positive), the next ternary operator is evaluated. If the condition is false (number is negative), the value "Negative" is directly assigned to the variable result.
The expression (number % 2 == 0) is the condition for the nested ternary operator. If the condition is true (number is even), the value "Even" is assigned to the variable result. If the condition is false (number is odd), the value "Odd" is assigned to the variable result.
Finally, the value of result is printed using System.out.println().
public class NullCheckExample {
public static void main(String[] args) {
String name = null;
String result = (name != null) ? name : "Unknown";
System.out.println("Name: " + result);
}
}
In this example, we have a variable name, which is initially assigned a null value. We use the ternary operator to check if name is null. If it is not null, we assign the value of name to the variable result. Otherwise, if name is null, we assign the string "Unknown" to result.
The expression (name != null) is the condition for the ternary operator. If the condition is true (name is not null), the value of name is assigned to the variable result. If the condition is false (name is null), the value "Unknown" is assigned to result.
Finally, the value of result is printed using System.out.println().
public class MaxFunctionExample {
public static void main(String[] args) {
int a = 10;
int b = 20;
int max = (a > b) ? a : b;
System.out.println("The maximum value is: " + max);
}
}
In this example, we have two variables, a and b representing two numbers. We use the ternary operator to compare the values of a and b and assign the maximum value to the variable max.
The expression (a > b) is the condition for the ternary operator. If the condition is true (a is greater than b), the value of a is assigned to the variable max. If the condition is false (a is not greater than b), the value of b is assigned to max.
Finally, the maximum value stored in max is printed using System.out.println().
public class MinFunctionExample {
public static void main(String[] args) {
int a = 10;
int b = 20;
int min = (a < b) ? a : b;
System.out.println("The minimum value is: " + min);
}
}
In this example, we have two variables, a and b representing two numbers. We use the ternary operator to compare the values of a and b and assign the minimum value to the variable min.
The expression (a < b) is the condition for the ternary operator. If the condition is true (a is less than b), the value of a is assigned to the variable min. If the condition is false (a is not less than b), the value of b is assigned to min.
Finally, the minimum value stored in min is printed using System.out.println().
public class AbsFunctionExample {
public static void main(String[] args) {
int number = -10;
int absValue = (number < 0) ? -number : number;
System.out.println("The absolute value is: " + absValue);
}
}
In this example, we have a variable number representing a number. We use the ternary operator to check if number is less than 0. If it is, we negate the value of number to get the absolute value. If it is not less than 0, we assign the value of number as it is.
The expression (number < 0) is the condition for the ternary operator. If the condition is true (number is less than 0), the value of -number (negation of number) is assigned to the variable absValue. If the condition is false (number is not less than 0), the value of number is assigned to absValue.
Finally, the absolute value stored in absValue is printed using System.out.println().
Using the ternary operator in Java with multiple conditions offers several advantages:
Concise and Readable Code: Ternary operators allow you to execute simple conditional codes/statements straightforwardly and quickly. Ternary operators compress the if-else logic in a single line, making the code easier to read and understand.
Reduced Code Length: You can reduce the code lines needed to handle simple functions. Reducing the code length helps create more compact codes and improves the maintainability of the code.
Better Performance: Sometimes, the ternary operator performs better than the standard if-else statement. Java evaluates the ternary operator on its runtime, avoiding the overhead of branching and increasing execution speed.
Avoiding Repetitive Variable Assignment: The ternary operator is valid for assigning values to variables based on conditions. It negates the requirement for a repetitive variable assignment using if-else statements and proving a cleaner code.
Conditional operators are essential tools for creating logical expressions and controlling the flow of execution in Java programs. They allow developers to express conditions and make decisions based on evaluating boolean expressions.
Developers can efficiently handle branching logic and create more concise, readable code with conditional operators.
1. What is the purpose of conditional operators in Java?
Conditional operators in Java allow developers to create logical expressions to control the flow of execution in their programs.
2. What are the commonly used conditional operators in Java?
The commonly used conditional operators in Java include the conditional AND (&&), conditional OR (||), and the ternary operator (?:).
3. How are conditional operators different from other operators in Java?
Conditional operators specifically evaluate conditions and make decisions based on boolean expressions. Unlike the bitwise operator in Java, conditional operators focus on controlling the execution flow rather than compiling bits.
PAVAN VADAPALLI
Director of Engineering
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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...