Why mixing + and cast does not produce an error in "+(int)+(long)-1"?

java

Solution

You are not adding nor substracting. Those + and - operators are unary sign operators.

See documentation at The Unary Operators section.

The sequence at stake:

(byte)+(short)-(int)+(long)-1

is evaluated from right to left like this:

the initial value is -1 casting to long (which is still -1) unary + sign (still -1) casting to int (still -1) unary - sign (now the value is 1) so on (the value remains 1 until the end)

Problem

Why does this print 1? ``` import java.util.*; import java.lang.*; import java.io.*; class Main { public static void main (String[] args) throws java.lang.Exception { // your code goes here System.out.println((byte)+(short)-(int)+(long)-1); } } ``` Can we mix casting and `+,-` unary operators? I know that we can do casting multiple times, but why doesn't putting `+ ,-` unary operators in between produce an error?

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