public class Solver {
    public void solve() {
        
        // 构造命令行 cmd /c 可以调用一个普通的.exe文件，注意目录位置
        String cmd = "cmd /c d://test";
        // 设置工作目录
        File workDir = new File("c://");
        try {
            Process process = Runtime.getRuntime().exec(cmd, null, workDir);
            // 读取错误流和正常流的输入，否则会阻塞，不能正确获得结果
            InputStream stderr = process.getErrorStream();
            getInputData(stderr, "solver Error>>>");
            InputStream inpbuildtar = process.getInputStream();
            getInputData(inpbuildtar, "solver Info>>>");
            int progEnd = process.waitFor();
            if (progEnd != 0) {
                throw new RuntimeException("Solver Error");
            }
        } catch (Exception e) {
            
        }
    }
    /**
     * 读流中数据
     * 
     * @param inputStream
     * @param prefix
     */
    private void getInputData(final InputStream inputStream, final String prefix) {
        new Thread() {
            public void run() {
                try {
                    StringBuilder builder = new StringBuilder();
                    int c = inputStream.read();
                    while (c >= 0) {
                        builder.append((char) c);
                        c = inputStream.read();
                    }
                } catch (IOException e) {

                }
            }
        }.start();
    }
}