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javasyntaxoperatorsdeclarationprimitive

Java primitive declaratiron

Given the following code snippet:

int i = 0;

int y = + ++i;

System.out.println(y);

The result is 1. Why is this a valid declaration? Can anyone explain what is =+?

Solution 
  • int y = + ++i;

    The first + in this line is simply the unary + operator (see: Assignment, Arithmetic, and Unary Operators). It does nothing. It's similar to the unary - operator. The line above is equivalent to:

    int y = ++i;

    which increments i and then assigns the new value of i to y.