42 lines
1.0 KiB
Java
42 lines
1.0 KiB
Java
|
//: housekeeping/Flower.java
|
|||
|
// <20>2015 MindView LLC: see Copyright.txt
|
|||
|
// Calling constructors with "this"
|
|||
|
import static com.mindviewinc.util.Print.*;
|
|||
|
|
|||
|
public class Flower {
|
|||
|
int petalCount = 0;
|
|||
|
String s = "initial value";
|
|||
|
Flower(int petals) {
|
|||
|
petalCount = petals;
|
|||
|
print("Constructor w/ int arg only, petalCount= "
|
|||
|
+ petalCount);
|
|||
|
}
|
|||
|
Flower(String ss) {
|
|||
|
print("Constructor w/ String arg only, s = " + ss);
|
|||
|
s = ss;
|
|||
|
}
|
|||
|
Flower(String s, int petals) {
|
|||
|
this(petals);
|
|||
|
//! this(s); // Can't call two!
|
|||
|
this.s = s; // Another use of "this"
|
|||
|
print("String & int args");
|
|||
|
}
|
|||
|
Flower() {
|
|||
|
this("hi", 47);
|
|||
|
print("default constructor (no args)");
|
|||
|
}
|
|||
|
void printPetalCount() {
|
|||
|
//! this(11); // Not inside non-constructor!
|
|||
|
print("petalCount = " + petalCount + " s = "+ s);
|
|||
|
}
|
|||
|
public static void main(String[] args) {
|
|||
|
Flower x = new Flower();
|
|||
|
x.printPetalCount();
|
|||
|
}
|
|||
|
} /* Output:
|
|||
|
Constructor w/ int arg only, petalCount= 47
|
|||
|
String & int args
|
|||
|
default constructor (no args)
|
|||
|
petalCount = 47 s = hi
|
|||
|
*///:~
|