Java Reference
In-Depth Information
Changing Variables
If a variable has been assigned a numerical value, it can be increased using the following
operation:
points = 0; // initialize points score to zero
<< 0
points = points + 10;
<< 10
This will increase the value held in the
points
variable by
10
. You can also use the com-
pound assignment operator,
+=
, which is a shortcut for performing the same task, but helps
you avoid writing the variable name twice:
points += 10;
<< 20
There are equivalent compound assignment operators for all the operators in the previous
section:
points -= 5; // decreases points by 5
<< 15
points *= 2; // doubles points
<< 30
points /= 3; // divides value of points by 3
<< 10
points %= 7; // changes the value of points to the
remainder
↵
if its current value is divided by 7
<< 3
