摘要：
Create a class with a String field that is initialized at the point ofdefinition, and another one that is initialized by the constructor. What isthe d... 阅读全文
摘要：
The this keyword is also useful for passing the current object to another method: 1 class Person { 2 public void eat(Apple apple) { 3 Appl... 阅读全文
摘要：
1 public class Leaf { 2 3 int i = 0; 4 5 Leaf inceament() { 6 i++; 7 return this; 8 } 9 10 void print() {11 ... 阅读全文