Calling constructors with this
// : c04:Flower.java // Calling constructors with "this." // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. public class Flower { int petalCount = 0; String s = new String("null"); Flower(int petals) { petalCount = petals; System.out.println("Constructor w/ int arg only, petalCount= " + petalCount); } Flower(String ss) { System.out.println("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" System.out.println("String & int args"); } Flower() { this("hi", 47); System.out.println("default constructor (no args)"); } void print() { //! this(11); // Not inside non-constructor! System.out.println("petalCount = " + petalCount + " s = " + s); } public static void main(String[] args) { Flower x = new Flower(); x.print(); } } ///:~
1. | Simple use of the this keyword | ||
2. | This shows off the uses of this |