看下面thinking in java 里面中的經典例子吧,不懂
再看十遍
看到懂為止:
public class Leaf{
private int i=0;
Leaf increment(){
i++;
return this;
}
void print(){
System.out.println("i="+i);
}
public static void main (String [] args)
{
Leaf x =new Leaf();
x.increment().increment(). increment().print();
}
}


public class Leaf{
private int i=0;
Leaf increment(){
i++;
return this;
}
void print(){
System.out.println("i="+i);
}
public static void main (String [] args)
{
Leaf x =new Leaf();
x.increment().increment(). increment().print();
}
}