自动编译执行java程序的程序

  今天写了一个自动编译执行.java程序的程序，但是只能针对只有输出的，对于需要和用户交互进行输入的程序则不行,这也是提问的原因。
简单演示如图：



如果想实现能够自动执行具有输入功能的的，需要如何修改呢？附上我的源码

Java code:
import java.io.*;
public class Run_test
{
boolean the_com(Process p) throws IOException
{
String s;
BufferedReader out=new BufferedReader(new InputStreamReader(p.getInputStream()));
while((s=out.readLine())!= null)
System.out.print(s);
BufferedReader err = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while((s = err.readLine())!= null)
{
System.out.print(s);
return false;
}
return true;
}
void the_run(Process p) throws IOException
{
String s;
BufferedReader out=new BufferedReader(new InputStreamReader(p.getInputStream()));
while((s=out.readLine())!= null)
System.out.print(s);
BufferedReader err = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while((s = err.readLine())!= null)
System.out.print(s);
}
public static void main(String args[]) throws IOException
{
String path = args[0];
String filename = args[1];
Runtime r = Run