如何在同时接收输出的同时将标准输入重定向到多个java进程

import java.io.IOException;

public class PipeExample {
    public static void main(String[] args) {
        try {
            // 创建第一个进程
            ProcessBuilder processBuilder1 = new ProcessBuilder("java", "Process1");
            Process process1 = processBuilder1.start();

            // 创建第二个进程
            ProcessBuilder processBuilder2 = new ProcessBuilder("java", "Process2");
            Process process2 = processBuilder2.start();

            // 将第一个进程的输出连接到第二个进程的输入
            processBuilder1.redirectOutput(process2.getOutputStream());

            // 启动第二个进程
            process2.waitFor();

            // 获取第一个进程的输出
            InputStream output1 = process1.getInputStream();
            BufferedReader reader1 = new BufferedReader(new InputStreamReader(output1));
            String line1;
            while ((line1 = reader1.readLine()) != null) {
                System.out.println("Process1 output: " + line1);
            }

            // 获取第二个进程的输出
            InputStream output2 = process2.getInputStream();
            BufferedReader reader2 = new BufferedReader(new InputStreamReader(output2));
            String line2;
            while ((line2 = reader2.readLine()) != null) {
                System.out.println("Process2 output: " + line2);
            }

            // 关闭输入流和进程
            reader1.close();
            reader2.close();
            process1.destroy();
            process2.destroy();
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}