Question
With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?
 1. x++;
 2. x = x + 1;
 3. x += 1;
 4. x =+ 1;
Answer: Option D
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Operator ++ increases value of variable by 1. x = x + 1 can also be written in shorthand form as x += 1. Also x =+ 1 will set the value of x to 1.
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