Fix Java Process.waitFor Stuck Issues

In Java, the Process.waitFor() method will block the current thread until the child process is completed. If you find that the Process.waitFor() method is stuck, it may be due to one of the following reasons:

1. Wait for the process to finish.
2. Terminate the process.

process.destroy();

1. The child process output buffer is full: If the child process has a lot of output and you do not handle it promptly, it may cause the child process to block. To avoid this issue, you can set the appropriate buffer size before starting the child process.

ProcessBuilder processBuilder = new ProcessBuilder(command);
processBuilder.redirectErrorStream(true);
processBuilder.redirectOutput(ProcessBuilder.Redirect.INHERIT);

Process process = processBuilder.start();
process.waitFor();

1. The method to obtain an output stream in the process.

ProcessBuilder processBuilder = new ProcessBuilder(command);
processBuilder.redirectOutput(ProcessBuilder.Redirect.INHERIT);

Process process = processBuilder.start();
OutputStream outputStream = process.getOutputStream();
outputStream.write(input.getBytes());
outputStream.close();

process.waitFor();

Please select the appropriate solution based on your specific situation, and ensure that the output and input of the subprocess have been handled before calling Process.waitFor() method.