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Siva Nookala - 18 Feb 2019
 Arithmetic Compound Assignment Operators In Java are used to combine an arithmetic operation with an assignment operation. e.g., `marks += 5;` instead of `marks = marks + 5;` Compound assignment operators provide a shorter syntax for assigning the result of an arithmetic operator. If the we want to multiply a variable `score` by 3 and assign it to the same variable `score`, we could use `score *= 3;` instead of using `score = score * 3;` The general syntax of the compound assignment operators is var op= expression; Compound assignment is supported for addition, subtraction, multiplication, division and modulus and the corresponding operators respectively are `+=, -=, *=, /=, %=` Compound assignment operators are faster than performing the operation and then assigning. i.e. doing `score *= 3;` is faster than `score = score * 3;` Compound Assignment OperatorsCODE Try it Online`class CompoundAssignments{    public static void main(String arg[])    {        int x = 5;        int y = 2;        int z = 3;                x += 6; // LINE A        y *= 8; // LINE B        z += y * x; // LINE C        z %= 7; // LINE D                System.out.println("x = " + x);        System.out.println("y = " + y);        System.out.println("z = " + z);        }}`OUTPUTx = 11y = 16z = 4DESCRIPTIONHere, we have declared three variables `x`, `y` and `z` and initialized them. In `LINE A`, `6` is added to previous `x` value, which is `5` and assigned to `x` again. So `x` becomes `11 (= 5 + 6)`. In `LINE B`, the value of `y` is changed to `16 (= 8 * 2)` from `2`. In `LINE C`, the `y * x (= 16 * 11 = 176)` is added to `z` and assigned to `z` again. So `z` changes from `3` to `179 (= 176 + 3)`. In `LINE D`, the value of `z % 7` is assigned to `z`, so `z` becomes `4 (= 179 % 7)`. THINGS TO TRYChange the order of the lines `A, B, C` and `D` to `B, A, D` and `C` and see what will be the output. Try some other order of lines and check if the output is per your understanding. Change the order of the lines such that the `x` is `11`, `y` is `16` and `z` is `25` at the end of the program. Try other operators like `-=` and `/=`. 2-min video about compound assignment operators
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