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I got this question given below from a mock exam and i m not able to understand its output.Can somebody explain why its output will be "false true false true". import java.io.*;

Hi, Here are the answers to ur queries: The first statement,

1 - 1 / 3 * 3

will be evaluated as follows: 1 - (1/3) * 3 = 1 - (0 * 3) = 1 - 0 = 1. This is because in integer arithmetic operations, the division operator (/) has highest precedence followed by the multiplication operator (*) followed by Addition and Subtraction. Hence //1 returns false.

The evaluation proceeds as 1 - (1.0f / 3.0f) * 3.0d. But here we have a floating point and a double value. So the floating point operation is performed first...then converted to double...1 - 0.33333d * 3.0d. But converting from floating point to double causes some loss of precision and hence the result is <> 0. Hence //3 returns false.

Finally,

1 - 1.0d / 3.0d * 3.0d

returns true as all operations are with double values. Reasoning is much the same as at //2