Java OCA OCP Practice Question 2541

Question

Consider the following program and predict the output: 

public class Main {
     public static void main(String []args) {
             String s = new String("5");
             System.out.println(1+10+s+1+10);
     }
}
  • a) 11511
  • b) 1105110
  • c) 115110
  • d) 27


c)

Note

The string concatenation operator works as follows:

if both the operands are numbers, it performs the addition;

otherwise it concatenates the arguments by calling the toString() method if needed.

It evaluates from left to right.

Hence, the expression in the program results in the string 115110.




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