写入Java流程的InputStream

Process

OutputStream

OutputStream stdin = process.getOutputStream(); // write to this

因此，您所拥有的应该是正确的。

我的驱动程序（通过try-with-resources语句应用您自己的最佳实践）

public class ProcessWriter {    public static void main(String[] args) throws Exception {        ProcessBuilder builder = new ProcessBuilder("java", "Test");        builder.directory(new File("C:\Users\sotirios.delimanolis\Downloads"));        Process process = builder.start();        OutputStream stdin = process.getOutputStream(); // <- Eh?        InputStream stdout = process.getInputStream();        BufferedReader reader = new BufferedReader(new InputStreamReader(stdout));        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(stdin));        writer.write("Sup buddy");        writer.flush();        writer.close();        Scanner scanner = new Scanner(stdout);        while (scanner.hasNextLine()) { System.out.println(scanner.nextLine());        }    }}

我的应用程序

public class Test {    public static void main(String[] args) throws Exception {        Scanner console = new Scanner(System.in);        System.out.println("heello World");        while(console.hasNextLine()) { System.out.println(console.nextLine());        }    }}

运行 驱动程序 打印

heello WorldSup buddy

由于某些原因，我需要

close()

flush()

*如果

close()

n

所以用

writer.write("Sup buddy");writer.write("n");writer.write("this is moren");writer.flush();

驱动程序打印

heello WorldSup buddythis is more