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Ternary operator in java

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instanceof java

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instanceof java is a java related one.
Ternary operator in java Posted: Apr 27, 2016 3:58 AM
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  • Ternary operator also known as conditional operator in java.
  • Ternary operator used to evaluate boolean expression and it consists of three operands.




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);

  20. }
  21.  
  22. }
Output:

  1. its true
  2. its true

ternary operator in java


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