java运行tcl脚本

public class dddd {

/**
 * @param args
 * @throws IOException 
 */
public static void main(String[] args) throws IOException {
    // TODO Auto-generated method stub
    Runtime run = Runtime.getRuntime();   
    Process pro = run.exec("cmd /c start tclsh85 e:dddd.tcl"); 
    //Process pro = run.exec("cmd /c start dir"); 
    //Process pro = run.exec("cmd /c ");
    BufferedReader br = new BufferedReader(new InputStreamReader(pro.getInputStream()));   
    String str = "";   
    br.readLine();
    while((str = br.readLine()) != null) {   
        System.out.println("str="+str);   
    }   
    br.close();   
    pro.destroy();   

}

}
运行这段代码怎么没输出，没有报异常，但在dos下有输出

ProcessBuilder builder = new ProcessBuilder("java","-cp","e:/","dddd");

你又发了一次。。。
[quote]Process pro = run.exec("cmd /c start tclsh85 e:dddd.tcl");
[/quote]
首先会将传进来的String按分隔符分解成数组，数组的第一个元素为要执行
的命令，其余的作为参数。执行结果可能输出到stdin或stderr中。
对应获取的输入流分别为pro.getInputStream()或pro.getErrorStream()。
所以最好的方式是用ProcessBuilder将错误输出流和标准输出流合并，如：
[code="java"]
ProcessBuilder builder = new ProcessBuilder("cmd","/c","dir");
builder.redirectErrorStream(true);
Process pro = builder.start();
BufferedReader br = new BufferedReader(new InputStreamReader(pro.getInputStream()));
String str = "";
while ((str = br.readLine()) != null)
{
System.out.println("str=" + str);
}
br.close();
pro.destroy();
[/code]

[quote]str=-help 用于列出可能的选项
请问/c这个参数应该怎么填 [/quote]

javac 没有/c这个参数，如果要制定classpath，输入-classpath

[quote]
ProcessBuilder builder = new ProcessBuilder("javac","/c","e:dddd.java");
[/quote]
e:dddd.java少了盘符
你是不是要生成所有编译信息？
如果是的话代码是下面这个样子
ProcessBuilder builder = new ProcessBuilder("javac","-verbose","e:/dddd.java");

[quote]还是不知道怎么实现，请您告诉我如果要编译e盘dddd.java文件应该怎么写？谢啦 [/quote]

ProcessBuilder builder = new ProcessBuilder("javac","-verbose","e:/dddd.java");