java中this关键字用法

 /** * this关键字用法 */public class Flower {int petalCount = 0;String s = "initial value";Flower(int petals){petalCount = petals;System.out.println("Constructor with one int arg");}Flower(String ss){System.out.println("Constructor with one string arg");s = ss;}Flower(String ss, int petals){this(petals);this.s = ss;System.out.println("Constructor with string and int args");}Flower(){this("hi",47);System.out.println("Default Constructor with no args");}void printPetalCount(){System.out.println("petalCount = "+petalCount+"; s = "+s);}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubFlower x = new Flower();x.printPetalCount();}}