public class ReturnThis
{
public int age;
public ReturnThis grow()
{
age++;
return this;
}
public static void main(String[] args)
{
ReturnThis rt = new ReturnThis();
rt.grow()
.grow()
.grow();
System.out.println("rt的age属性值是:" + rt.age);
}
}
输出的结果为 rt的age属性值是:3
rt.grow()
.grow()
.grow();