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Java Execute an external program and capture the output

So i try to Execute an external program and capture the output.
Currently the part that execute command works fine (using .bat file) and i can see the output on the cmd window.
The part that need to read the output not and it seemt that it stack inside my while
This is what i have try:
String[] command = {"cmd.exe", "/C", "Start", "d:\\batFile.bat"};
Process process = Runtime.getRuntime().exec(command);
InputStream is = process.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line = null;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
Update
This is my .bat file:
docker volume create --name=mydb
timeout 3
docker run -d -p 27017:27017 -v mydb:/data/db mongo
timeout 3

Maybe you can try to redirect the output like this :
Process runtimeProcess1;
ProcessBuilder pb = new ProcessBuilder("cmd.exe", "/C","Start","d:\\batFile.bat");
pb.redirectOutput(Redirect.INHERIT);
pb.redirectError(Redirect.INHERIT);
pb.redirectInput(Redirect.INHERIT);
runtimeProcess1 = pb.start();
int processComplete1 = runtimeProcess1.waitFor();

Executing custom Commands in Java

With this, we can execute "build in" commands in java. However if we want to run some custom commands from this, Changing "pwd" to "device_id -l" doesn't work. "device_id -l" should list all the ids of attached devices of currently host. if "device_id -l" is executed in terminal itself. it works fine. There is not a question for the "build in" bash commands. Thank you.
String cmd = "pwd";
Runtime run = Runtime.getRuntime();
Process pr = run.exec(cmd);
pr.waitFor();
BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));
String line = "";
while ((line=buf.readLine())!=null)
System.out.println(line);
We can excuate

You can try using ProcessBuilder.
// create process
ProcessBuilder pb = new ProcessBuilder("/bin/bash", "-c", "device_id", "-l");
// start process
Process p = pb.start();
// wait for process exit
p.waitFor();
// read process output
BufferedReader buf = new BufferedReader(newInputStreamReader(p.getInputStream()));
String line = "";
while ((line=buf.readLine())!=null)
System.out.println(line);

You need to split your command+arguments to a String array. In your case, if you want to execute "device_id -l", split that into an array like this:
String[] cmd = new String[] {"/full/path/to/device_id", "-l"};
Process pr = Runtime.getRuntime().exec(cmd);
And, you might want to use ProcessBuilder.
String[] cmd = new String[] {"/full/path/to/device_id", "-l"};
ProcessBuilder pb = new ProcessBuilder(cmd);
Process pr = pb.start();
Finally, you'll have to take into account that Java does not look for executables in PATH (like command shell does), you'll have to provide full path to the executable/script that you want to execute (or it has to be in the working directory; you can set the working directory with ProcessBuilder.directory(File)).
See also: Difference between ProcessBuilder and Runtime.exec()

how to execute batch command (imagemagick) with java

I used the terminal command to convert all the images in the folder into RGB images using imagemagick tool
"C:\Documents and Settings\admin\My
Documents\NetBeansProjects\Archiveindexer\resources\T0003SathyabamaT\Active\CBE_2014_03_02_FE_04_MN_IMAGES_CONVERTED"
is my image folder
terminal command:
myimagefolder> mogrify -colorspace RGB *.jpg
This works fine. But when run this using java it is not working
File destpathfinalconv = new File("C:/Documents and Settings/admin/My Documents/NetBeansProjects/Archiveindexer/T0003SathyabamaT/Active/CBE_2014_03_02_FE_04_MN_IMAGES_CONVERTED");
ProcessBuilder pb = new ProcessBuilder("mogrify", "-colorspace RGB", destpathfinalconv.toString(),
"*.jpg");
pb.redirectErrorStream(true);
Process p = pb.start();
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
while ((line = br.readLine()) != null) {
System.err.println(line);
}
System.err.println("Error "+p.waitFor());
System is throwing error "mogrify.exe: unrecognized option
`-colorspace RGB' # error/mogrify.c/MogrifyImageCommand/4254. Error 1"
Any idea please suggest.

You are specifying '-colorspace RGB' as a single argument, but it should be two arguments. And you should combine the path and file and search pattern into a single argument. The constructor of ProcesBuilder should be called like this:
ProcessBuilder pb = new ProcessBuilder("mogrify", "-colorspace", "RGB",
destpathfinalconv.toString() + "\\" + "*.jpg");

Try this:
ProcessBuilder pb = new ProcessBuilder(
"mogrify",
"-colorspace",
"RGB",
destpathfinalconv.toString(),
"*.jpg");
Explanation: Each String argument in the ProcessBuilder ends up as a "word" (according to shell parlance) or a separate parameter in the resulting execve call.
Combining "-colorspace RGB" results in a single parameter to mogrify, which is the (unknown) option "-colorspace\ RGB".

Execute Command not work in Java

Execute Command worked well in Terminal, but not in Java code.
String cmd = "find -name javax.jar";
Process process = Runtime.getRuntime().exec(cmd);
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null)
{
System.out.println("" + line);
}
System.out.println("Line : "+line);

When you spawn a process with
Runtime.getRuntime().exec(cmd);
the process is started from the same working directory as the Java process. If Java was run from a different working directory than you ran the find -name javax.jar in console, you will see different results.

i think you may try to add the path of find.
like find /var/tmp -name

How to perform a shell redirection (command > output.txt) using ProcessBuilder?

I wanted to backup a MySQL database using ProcessBuilder and the > character is not being interpreted as I expected. This is my code:
java.util.List<String> cmd = new java.util.ArrayList<>();
cmd.add("mysqldump");
cmd.add("-u");
cmd.add("root");
cmd.add("-p"+password);
cmd.add("DBx");
cmd.add(">");
cmd.add("DBbk.sql");
ProcessBuilder pb = new ProcessBuilder(cmd);
pb.directory(new File("."));
Process p = pb.start();
p.waitFor();
BufferedReader err = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while((line = err.readLine()) != null) {
System.out.println(line);
}
The output is:
Warning: Using a password on the command line interface can be insecure.
mysqldump: Couldn't find table: ">"

The process builder is executing the program directly, not executing it through a shell/command prompt. Therefore, you don't get any nice features of the shell like the > character for redirection. Sorry.

Give this a try (just displaying the significant portion of the solution):
new ProcessBuilder("cmd", "/C", "your_command > DBbk.sql").start()
This way you're explicitly calling cmd. In Linux you could call bash or whatever shell you use.