Java软贱攻城狮

//覆写toString()方法 class Book { private String title; private double price; public Book(String title, double price) { this.title = title; this.price = price; } @Override public String toStri...

//覆写toString()方法、equals()方法 class Book { private String title; private double price; public Book(String title, double price) { this.title = title; this.price = price; } @Override public bo...

public class Demo { public static void main(String[] args) { Object obj = new int[] { 1, 2, 3 }; System.out.println("输出地址:"+obj);// 输出的是地址 if (obj instanceof int[]) { int[] data = (int[]) ob...

/* * 链表结构 */ class Link { class Node { private Node next;// 下一个节点 private Object data;// 数据 public Node(Object data) { this.data = data; } // 1.添加节点 public void addNode(Node newNod...