package test;
class Leaf{
int i = 0;
//this是指向自身的引用,所以this.i是成员变量,i是形参。
Leaf(int i){this.i = i;}
Leaf increament(){
i++;
return this;
}
void print(){System.out.println("i="+i);}
}
public class Test {
public static void main(String args[]){
Leaf leaf = new Leaf(100);
leaf.increament().increament().print();
}
}
[img]http://dl2.iteye.com/upload/attachment/0116/1298/e09e858a-e06c-3f41-b4f1-26ec811e79a2.jpg[/img]
[img]http://dl2.iteye.com/upload/attachment/0116/1300/22a2a70b-dec9-3d59-a9c0-3bf3927da19d.jpg[/img]