Java Object类(toString 方法)，objecttostring

Java Object类(toString 方法)，objecttostring

//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 toString() {
		return "书名:《" + this.title + "》价格:" + this.price;
	}

}

public class Demo {
	public static void main(String[] args) {
		Book b = new Book("Java入门", 88.8);
		System.out.println(b);
	}

}