Operators, operator structures, and precedence
We have already met a lot of operators. Let's first check the arithmetic operators.
Arithmetic operators and types
Arithmetic operators are:
+(plus sign)-(minus)*(asterisk)/(slash)%(percent)=(equal)
I'm beginning with the last one: =
. It is the
assignment operator. We have already used it a lot to define a variable, which just means to assign a value to it. For instance:
int oscillatorFrequency = 440;
For the other operators, I'm going to distinguish two different cases in the following: character types, which include char and String, and numerical types. Operators can change their effect a bit according to the types of variables.
Character types
char and String can only be processed by +. As you may have guessed, + is the concatenation operator:
String myString = "Hello "; String myString2 = "World"; String myResultString = myString + myString2; myString.concat(myString2);
In this code, concatenation of myResultString and myString results...