Why is My Java `process.waitFor()` Method Stalling?

Troubleshooting process.waitFor() Stalling

The process.waitFor() method in Java's Runtime class can fail to return for several reasons.

Unending Processes

Typically, waitFor() stalls because the executed command does not terminate, often caused by the process producing output that is not read. This results in a deadlock, where both processes await the other's completion.

Avoiding Deadlock

To resolve this deadlock, it is crucial to continuously read from the process's input stream. This prevents the process from blocking due to a full buffer and allows it to continue executing and eventually terminate.

Additional Resources

For a comprehensive understanding of Runtime.exec() pitfalls and workarounds, refer to the article "When Runtime.exec() won't":

[When Runtime.exec() won't](https://www.ibm.com/developerworks/java/library/j-whenexec/)

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