47 lines
1.2 KiB
Java
47 lines
1.2 KiB
Java
// housekeeping/Flower.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// Calling constructors with "this"
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public class Flower {
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int petalCount = 0;
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String s = "initial value";
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Flower(int petals) {
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petalCount = petals;
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System.out.println(
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"Constructor w/ int arg only, petalCount= "
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+ petalCount);
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}
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Flower(String ss) {
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System.out.println(
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"Constructor w/ String arg only, s = " + ss);
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s = ss;
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}
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Flower(String s, int petals) {
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this(petals);
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//! this(s); // Can't call two!
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this.s = s; // Another use of "this"
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System.out.println("String & int args");
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}
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Flower() {
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this("hi", 47);
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System.out.println("no-arg constructor");
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}
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void printPetalCount() {
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//! this(11); // Not inside non-constructor!
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System.out.println(
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"petalCount = " + petalCount + " s = "+ s);
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}
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public static void main(String[] args) {
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Flower x = new Flower();
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x.printPetalCount();
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}
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}
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/* Output:
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Constructor w/ int arg only, petalCount= 47
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String & int args
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no-arg constructor
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petalCount = 47 s = hi
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*/
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