. Java
Java Methods
constructor, accessor, and mutator methods
constructor methods
Special method for creating new instance of a class. Must have the same name as the class it constructs. Below (line 4) is the constructor for Cat.
accessor methods
Methods that return variables. The accessor method name should start with "get". Below (line 8) is the accessor named getCatsColor.
mutator methods
Methods that alter variables. The mutator method name should start with "set". Below (line 12) is the accessor named setCatsColor.
1 class Cat {
2 private static String animalType = "feline";
3 private String catColor;
4 Cat(String colorIn)
5 {
6 setCatsColor(colorIn);
7 }
8 public String getCatsColor()
9 {
10 return this.catColor;
11 }
12 public String setCatsColor()
13 {
14 this.catColor;
15 }
16
17 public static void main (String[] argsIn) {
18 Cat patches = new Cat("calico");
19 }
20 }
signature or method signature
What variable types and in what order they are passed to a method.
The return type is not a part of the signature.
In the folowing method "String, double" is the signature:
public int returnAnInt(String stringIn, double doubleIn) {
int intToReturn = 1;
if (stringIn.equals(String.valueOf(doubleIn))
{
intToReturn = 2;
}
return intToReturn;
}
overloaded method
Two or more methods with same name, different signature, return types can vary - but do not have to.
public int returnOneNoMatterWhat(String stringIn, double doubleIn) {
int intToReturn = 1;
return intToReturn;
}
public int returnOneNoMatterWhat(int intIn) {
int intToReturn = 1;
return intToReturn;
}
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| Comment by Anonymous on 2011-12-11 Rate this Comment |
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