Base64转Unicode解码：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

解码后的Unicode字符串是：'7f51'+'7edc'+'8fd0'+'7ef4'+'6e17'+'900f'+'56e2'+'961f'+'600b'+'627f'+'63a5'+'ff1a'+'a0031'+'002e'+'0004'+'0005'+'0044'+'8bc1'+'4e66'+'6316'+'6398'+'ff1a'+'a9a9'+'017b'+'4ee6'+'6398'+'f0f1a'+'5f7c'+'7bf1'+'ff1a'+'a0032'+'0030'+'0003'+'0000'+'0000'+'0000'+'0000'+'00a3'
注意：此处的Unicode字符串是通过将Base64编码的文本解码为二进制，并将二进制转换为Unicode表示形式而得到的。解码后的Unicode字符串可能无法以可见字符形式显示，因为其中可能包含控制字符和不可打印字符。

相关问题

3.下面的程序为URL类的应用，请填空把程序补充完整。 import java.net.*; import java.io.*; public class URLTest { public static void main(String[] args) { URL url = null; InputStream is; try { url = new URL("http://www.xhu.edu.cn");

is = url.openStream(); // 打开URL连接并获取输入流
BufferedReader br = new BufferedReader(new InputStreamReader(is)); // 将字节流转换为字符流
String line; // 存储读取到的每一行数据
while ((line = br.readLine()) != null) { // 循环读取每一行数据
System.out.println(line); // 输出每一行数据
}
br.close(); // 关闭流
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

JAVA写在包xhu.soft中定义一个教材类，包含编号、书名、作者、出版社和价格等属性，要求能用构造方法初始化图书 信息；同时能修改图书的各信息。然后在包xhu.test包中编写图书的测试类，输出图书信息。

首先，在`xhu.soft`包中定义一个`Book`类，用于表示教材：

package xhu.soft;

public class Book {
    private String bookId;
    private String title;
    private String author;
    private String publisher;
    private double price;

    // 构造方法，初始化图书信息
    public Book(String bookId, String title, String author, String publisher, double price) {
        this.bookId = bookId;
        this.title = title;
        this.author = author;
        this.publisher = publisher;
        this.price = price;
    }

    // 提供getter和setter方法，以便修改图书信息
    public String getBookId() { return bookId; }
    public void setBookId(String bookId) { this.bookId = bookId; }

    public String getTitle() { return title; }
    public void setTitle(String title) { this.title = title; }

    public String getAuthor() { return author; }
    public void setAuthor(String author) { this.author = author; }

    public String getPublisher() { return publisher; }
    public void setPublisher(String publisher) { this.publisher = publisher; }

    public double getPrice() { return price; }
    public void setPrice(double price) { this.price = price; }
}

接下来，在`xhu.test`包中编写一个`BookTest`类，用于测试图书信息：

package xhu.test;

import xhu.soft.Book;

public class BookTest {
    public static void main(String[] args) {
        // 创建一个新的Book对象并初始化信息
        Book book1 = new Book("B001", "Java Programming", "John Doe", "XYZ Publishers", 49.99);

        // 输出初始图书信息
        System.out.println("Book Information:");
        System.out.println("ID: " + book1.getBookId());
        System.out.println("Title: " + book1.getTitle());
        System.out.println("Author: " + book1.getAuthor());
        System.out.println("Publisher: " + book1.getPublisher());
        System.out.println("Price: " + book1.getPrice());

        // 修改图书信息并再次输出
        book1.setTitle("Advanced Java");
        book1.setPrice(59.99);
        System.out.println("\nModified Book Information:");
        System.out.println("ID: " + book1.getBookId());
        System.out.println("Title: " + book1.getTitle());
        System.out.println("Author: " + book1.getAuthor());
        System.out.println("Publisher: " + book1.getPublisher());
        System.out.println("Price: " + book1.getPrice());
    }
}

当你运行`BookTest`类，它会显示原始的和修改后的图书信息。