Java _signed_ byte 基元类型在现实生活中有什么用途吗

Java中的_signed_ byte基元类型是一个8位的有符号数字，可以表示范围为-128到127的整数。尽管_signed_ byte在日常编程中的使用相对较少，但它在某些情况下还是具有一定的用途。本文将介绍_signed_ byte的一些常见用途，并提供相应的案例代码。

int[] numbers = new int[1000];
for (int i = 0; i < numbers.length; i++) {
    numbers[i] = (int) (Math.random() * 201 - 100);  // 生成-100到100之间的随机整数
}

byte[] numbers = new byte[1000];
for (int i = 0; i < numbers.length; i++) {
    numbers[i] = (byte) (Math.random() * 201 - 100);  // 生成-100到100之间的随机整数
}

import java.io.FileInputStream;
import java.io.IOException;
public class ByteStatistics {
    public static void main(String[] args) {
        try (FileInputStream fileInputStream = new FileInputStream("data.bin")) {
            int oddCount = 0;
            int byteValue;
            while ((byteValue = fileInputStream.read()) != -1) {
                if (byteValue % 2 != 0) {
                    oddCount++;
                }
            }
            System.out.println("奇数字节的个数：" + oddCount);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

java
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class ByteServer {
    public static void main(String[] args) {
        try (ServerSocket serverSocket = new ServerSocket(8888)) {
            System.out.println("服务器已启动，等待客户端连接...");
            Socket socket = serverSocket.accept();
            System.out.println("客户端已连接：" + socket.getInetAddress().getHostAddress());
            InputStream inputStream = socket.getInputStream();
            OutputStream outputStream = socket.getOutputStream();
            int byteValue;
            while ((byteValue = inputStream.read()) != -1) {
                if (byteValue < 0) {
                    byteValue = -byteValue;
                }
                outputStream.write(byteValue);
            }
            inputStream.close();
            outputStream.close();
            socket.close();
            System.out.println("客户端已断开连接");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}