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c5this.java
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c5this.java
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// this关键字
// @author 晴和羽织
class Flower {
int petalCount = 0;
String s = "initial value";
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 = s;
System.out.println("String & int args");
}
Flower() {
this("hi", 47); // 使用this不能调用两个构造器,且必须将构造器置于最起始处。
System.out.println("default constructor (no args)");
}
void printPetalCount() {
System.out.println("petalCount = " + petalCount + " s = " + s);
}
}
public class c5this {
public static void main(String[] args) {
Flower x = new Flower();
x.printPetalCount();
}
}