Can the ternary operator be used instead of simple if-else statement?

The ternary operator op1 ? op2 : op3 works just like a condensed if-else statement. If op1 is true, returns op2; otherwise, returns op3. Can we use the tenery operator anywhere that applies to an if-else statement?

The answer is no. Under some circumstances, we have to use the if-else statement. The following sample code is taken from  Conditional Operator.com and a compile-time error will occurs:

class Program {
  static void doSomethingX() { }
  static void doSomethingY() { }
  pubic static void main(String[] args) {
    int x;
    ...
   //the following line causes compile-time error
    System.out.println((x==5)?doSomethingX():doSomethingY()); 
   
  }
}

In 15.25 Conditional Operator (? :):

Note that it is a compile-time error for either the second or the third operand expression to be an invocation of a void method. In fact, it is not permitted for a conditional expression to appear in any context where an invocation of a void method could appear.

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