Chapter 4 - Methods and Encapsulation Flashcards Preview

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1

What is the order of precedence for overloading methods?

1. The exact primitive type of the argument
2. If the argument is a byte, short, char, int, or long:
- The next larger size whole number primitive
available (byte, short, int, and long)
- The smallest size decimal primitive available.
(float, double)
3. If the argument is a float:
- A double primitive
4. A wrapper class type (has to be an exact match)
5. Varargs (exact primitive type)
If the argument is a byte, short, char, int, or long:
6. The next larger size whole number varargs available (byte, short, int, and long)
- The smallest size decimal varargs available
(float, double)
7. If the argument is a float:
- A double varargs
-Varargs (exact Wrapper class)

Example:

public class MethodPicker {
// Method A
public void pickMe(int x) {
System.out.println ("int");
}

// Method B
public void pickMe(long x) {
System.out.println ("long");
}

// Method C
public void pickMe(Integer x) {
System.out.println ("Integer");
}

// Method D
public void pickMe(int... x) {
System.out.println ("int...");
}

// Method E
public void pickMe(long... x) {
System.out.println ("long...");
}

public static void main(String[] args) {
MethodPicker mp = new MethodPicker();
int x = 5;
mp.pickMe(x);
}
}