java调用可执行程序,如何得到返回值？

[airfox2000]

先在solaris8上有一程序bb，调用后可以用echo $?显示返回返回值，成功返回1，错误返回0

现在在java里，我如下调用
Process process = Runtime.getRuntime().exec("bb");
我如何得到返回值，用以判断调用成功与否？

[yiqiangyang]

楼上的有理，强！
我以前碰到的处理的方式如一楼。
简单实用，但是技术不强，值得推敲。

[funcreal]

我见过的一个短信模块是这样做的。
在bb里面，程序执行完以后把状态写到一个文件里。
这样在java中，执行完以后在读取那个文件就行了。

[jFresH_MaN]

process.exitValue();
或者
process.getInputStream();流读打印在控制台的内容

[shangqiao]

Runtime run = Runtime.getRuntime();
Process process = null;
process = run.exec("java");
int exitValue = -1;
InputStream errorIn = process.getErrorStream();
InputStreamReader streamReader = new InputStreamReader(errorIn);
BufferedReader bufferedReader = new BufferedReader(streamReader);
InputStream inIn = process.getInputStream();
os = process.getOutputStream();
readInput = new WriteTo(inIn, this);
readError = new WriteTo(errorIn, this);
Thread threadError = new Thread(readError);
Thread threadIn = new Thread(readInput);

threadIn.start();
threadError.start();
exitValue = process.waitFor();

class WriteTo implements Runnable {
private InputStream in = null;

private InputStreamReader streamReader = null;

private BufferedReader bufferedReader = null;

private EclipseConsole output;

private String line = null;

public void run() {
try {
streamReader = new InputStreamReader(in);
bufferedReader = new BufferedReader(streamReader);
while ((line = bufferedReader.readLine()) != null) {
output.display.syncExec(new Runnable() {
public void run() {
output.appendText(line + "\n");
}
});
}
output.display.syncExec(new Runnable() {
public void run() {
output.appendText("已关闭" + "\n");
}
});
} catch (IOException e) {
output.display.asyncExec(new Runnable() {
public void run() {
output.appendText(line + "\n");
output.outputContent.setCaretOffset(output.outputContent.getCharCount());
}
});
} finally {
try {
if (streamReader != null)
streamReader.close();
if (bufferedReader != null)
bufferedReader.close();
if (in != null)
in.close();
} catch (Exception e) {

}
}
}

public WriteTo(InputStream in, EclipseConsole output) {
this.in = in;
this.output = output;
}
}

[shangqiao]

改一改就ok了