Data Structures and Algorithms in Java[1].pdf - Fulvio Frisone

zeros
>>> shift bits right, filling in with
Operational Assignment Operators
Besides the standard assignment operator (=), Java also provides a number of
other assignment operators that have operational side effects. These other kinds of
operators are of the following form:
variable op = expression
where op is any binary operator. The above expression is equivalent to
variable = variable op expression
except that if variable contains an expression (for example, an array index),
the expression is evaluated only once. Thus, the code fragment
a [5] = 10;
i = 5;
a[i++] += 2;
leaves a [5] with value 12 and i with value 6.
String Concatenation
Strings can be composed using the concatenation operator (+), so that the code
String rug = "carpet";
String dog = "spot";
String mess = rug + dog;
String answer = mess + " will cost me " + 5 + "
dollars!";
would have the effect of making answer refer to the string
"carpetspot will cost me 5 dollars!"
This example also shows how Java converts nonstring constants into strings,
when they are involved in a string concatenation operation.
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