Java Ternary Operator with Examples | technical-arbaab

Ternary operator in Java

Image Source - Google | Image by - examtray.com

It is a conditional operator in java which takes three operands or it is a one line replacement of if-else statements in java. It becomes more easier for a programmer to use ternary operator in place of if-else statement because it's syntax is quite easier as compared to if-else statements and consumes less space .                                                                                     

Syntax of  ternary operator-

  variable= (condition) ? expression 1: expression 2;  
             or  
 variable = expression 1 ? expression 2: expression 3  

here, expression 1 is executed if condition is true and the value of expression 1 is assigned to the variable and if condition is false expression 2 is executed and the value of expression 2 is assigned to the variable, not clear don't worry once you see in the code with a problem statement you will for sure clear with the concept-

flowchart of Ternary operation-

Image Source - Google | Image by - geeksforgeeks.com

let's see first how it is easier from if-else statement by looking on the syntax of if-else statement-

 if(condition)
	{
		//statement -1
	}
	else
	{
		//statement -2
	}

okay, it is seen clearly from both syntaxes that it is easier than  if-else now let's see some programming problems where it(ternary operator) is used-

program 1-  "To check if one number is greater than another number".

problem statement- If one number is greater than second number returns true otherwise returns false.

 public class MyForloop {  
      public static void main(String[] args)  
      {  
           int a=10;  
           int b=20;  
           boolean larger;  
           larger= a>b ? true: false;  
           System.out.println("a is greater than b:"+larger);  
      }       
 }  

Output: 

 a is greater than b:false  

another variant of same example-

 public class MyForloop {  
      public static void main(String[] args)  
      {  
           int a=10;  
           int b=20;  
           String result=(a>b) ? "a is greater than b": "a is smaller than b";
           System.out.println(result);
      }       
 }  

Output:

 a is smaller than b  

program 2-  "To check if one number is greater than another number".

problem statement- If one number is greater than second number increase the value of one number by 100 else decrease the value of second number by 100.

 public class MyForloop {  
      public static void main(String[] args)  
      {  
           int a=10;  
           int b=20;  
           boolean max;  
           max=(a>b) ? true: false;  
           int result = max==true ? a+100: b-100;  
           System.out.println("a is greater than b: "+max+"\n");  
           if(max)  
           {  
                System.out.println("after increasing the value of a by 100 the value of a is"+result+"\n");  
           }  
           else  
           {  
                System.out.println("after decreasing the value of b by 100 the value of b is"+result);  
           }  
      }       
 }  

Output: 

 a is greater than b: false  
 after decreasing the value of b by 100 the value of b is-80