本文介绍一个代码，在Java中调用外部程序。

示例代码：
Process proc = runtime.exec(args); //启动另一个进程来执行命令

InputStream in = proc.getErrorStream();//得到错误信息输出。

BufferedReader br = new BufferedReader(new InputStreamReader(in));

String line = "";

while ( (line = br.readLine())

!= null) {

outInfo = outInfo + line + "\n";

System.out.println(outInfo);

}