Ternary operator in java

• Ternary operator also known as conditional operator in java.
• Ternary operator used to evaluate boolean expression and it consists of three operands.

In Java, the ternary operator is a shorthand way to write an if-else statement. The operator has the following general form:

(condition) ? expression1 : expression2

The condition is a Boolean expression that is evaluated to either true or false. If the condition is true, the operator returns the value of expression1, and if the condition is false, it returns the value of expression2.

Here's an example of how you might use the ternary operator in a Java program:

int x = 5;

int y = 10;

int min = (x < y) ? x : y;

System.out.println(min);  // Output: 5

In the above example, the ternary operator compares the values of x and y, and assigns the value of x to the variable min if x is less than y, and assigns the value of y to min otherwise. This can be interpreted as (x<y) ? min=x : min=y .

It's also possible to use ternary operator for more complex use cases like below:

String result = condition ? "value if true" : anotherVar == null ? "null value" : anotherVar;

It's worth noting that, although ternary operator is a shorthand way to write an if-else statement, it can make code harder to read when the expressions are too long or the conditions are too complex. In such cases, it's often better to use an if-else statement instead.

Ternary operator in java syntax:

1. variable x = (expression) ? value if true : value if false

• Value of x will be decided based on the condition. if condition is true then it assigns first value to the variable
• If Expression is false then it assigns second value to the variable.

Java simple example program on ternary operator / conditional operator in java

1. package operatorsinjava;
2. public class TernaryOperator {
3.  
4.     /**
5.      * @ www.instanceofjava.com
6.      * 
7.      */
8.  public static void main(String[] args) {
9.         
10.  // checking condition 2>3 and if true assign 3 else 3
11.   int x= (2>3)?3:2;
12.         
13.   System.out.println(x);
14.         
15.  // checking condition 5<4 if true assign 4 else 3
16.  int y= (5<4)?4:3;
17.         
18.  System.out.println(y);
19.  
20. }
21.  
22. }

Output:

1. 2
2. 3

Ternary operator in java for boolean:

Java simple example program on ternary operator / conditional operator for boolean

1. package operatorsinjava;
2. public class TernaryOperator {
3.  
4.     /**
5.      * @ www.instanceofjava.com
6.      * 
7.      */
8.  public static void main(String[] args) {
9.         
10.  
11.  boolean x= true ? true: false;
12.         
13.  System.out.println(x);
14.         
15.  boolean y= false ? true : false;
16.             
17.  System.out.println(y);
18.         
19.  boolean z= false ? false : true;
20.         
21.  System.out.println(z);
22.  
23. }
24.  
25. }

Output:

1. true
2. false
3. true

Ternary operator in java for Strings:

Java simple example program on ternary operator / conditional operator for String

1. package operatorsinjava;
2. public class TernaryOperatorForStrings{
3.  
4.     /**
5.      * @ www.instanceofjava.com
6.      * 
7.      */
8. public static void main(String[] args) {
9.         
10.  String str= "java".equals("java") ? "Java Questions" : "Java Programs";
11.         
12.  System.out.println(str);
13.         
14.  String str1= (1==3)? "its true" : "its false";
15.         
16.  System.out.println(str1);
17.        
18. }
19.  
20. }

Output:

1. Java Questions
2. its false

Ternary operator in java for null;

Java simple example program on ternary operator / conditional operator for null check

1. package operatorsinjava;
2. public class TernaryOperatorForStrings{
3.  
4.     /**
5.      * @ www.instanceofjava.com
6.      * 
7.      */
8. public static void main(String[] args) {
9.         
10. String str= null;
11.  
12. String str1= (str==null) ? "its true" : "its false";
13.  
14. System.out.println(str1);
15.         
16. String str2= (str1!=null) ? "its true" : "its false";
17.  
18. System.out.println(str2);
19. 
    
20. }
21.  
22. }

Output:

1. its true
2. its true