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How To Use Runtime.getruntime.exec

With a web application I don't know what the "home" directory is, but it's either going to be the JVM's home directory, your web container's bin directory, or possibly your web Before I learned how to do all of this, I used to call a shell script on Unix and Linux systems whenever I needed to run multiple commands, so maybe you can do Once the shutdown sequence has begun it is impossible to register a new shutdown hook or de-register a previously-registered hook. Reply Submitted by Anonymous (not verified) on May 28, 2010 - 4:35pm Permalink Command line freeze when using java exec Hi,I am running exec on window. this contact form

The method System.runFinalization() is the conventional and convenient means of invoking this method. Because you can't create your own instance of the Runtime class, you first use the getRuntime method to access the current runtime environment and then invoke the Runtime exec method. Among the many things that can go wrong are: The operating system program file was not found. The following example shows the usage of lang.Runtime.exec() method.

Not on 4/21/2006? 1 2 ► Post Reply Bookmark Topic Watch Topic New Topic Similar Threads Run Oracle Script from within JSP Open browser/web page from a swing app Regular I ran it on windows 7 and got same erroe message. Follow us Core Java Enterprise Java Learn Java Mobile Java How-Tos Features News Blogs Resources Newsletters About Us Contact Privacy Policy Advertising Careers at IDG Site Map Ad Choices E-commerce Affiliate

A minimal set of system dependent environment variables may be required to start a process on some operating systems. Note that daemon threads will continue to run during the shutdown sequence, as will non-daemon threads if shutdown was initiated by invoking the exit method. This command work when I manually type in cmd. I was able to search within a zip file using the java.util.zip package but my program gets stuck when it comes across a zip file within a zip file.

Please let me know how to do this. Parameters:libname - the name of the library. A boolean would be more beneficial because exitValue() is a more appropriate name for this method, and it isn't necessary for two methods to perform the same function under different conditions. Does anyone have any idea how I can work around this?

An invocation of the form exec(command, envp, dir) behaves in exactly the same way as the invocation exec(cmdarray, envp, dir), where cmdarray is an array of all the tokens in command. The opposite is true for the process' output stream. [ June 19, 2003: Message edited by: Michael Morris ] Any intelligent fool can make things bigger, more complex, and more violent. The thing I didn't know until digging into this just now is that when you run exec, you aren't actually running your commands in a shell, you're really just running them This package's pitfalls surface often, affecting most programmers.

It takes a touch of genius - and a lot of courage - to move in the opposite direction. - Ernst F. Very cool, I appreciate everyone's questions here. I just kept avoiding this problem myself, but with enough people asking, I finally dug into this. Reply Submitted by Dauren Mussa (not verified) on November 12, 2009 - 8:02am Permalink What about cmd command in Windows Hi everyone. Previous Page Print PDF Next Page java_lang_runtime.htm Advertisements Write for us FAQ's Helping Contact © Copyright 2016.

Declaration Following is the declaration for java.lang.Runtime.exec() method public Process exec(String command) Parameters command -- a specified system command. weblink There's an overloaded version of Runtime.exec() that takes an array of Strings. Thanks Regards Ananth Reply Submitted by alvin on August 20, 2009 - 1:47pm In reply to Running system command remotely by Ananth (not verified) Permalink Typically to run a command on If I run the tomcat as services on win2k, it will give me the "Access denied" error mesg when try to access the mounted driver, but if it is running from

Dele I have a similar error. Such simple condition discrimination is the domain of an input parameter.Therefore, to avoid this trap, either catch the IllegalThreadStateException or wait for the process to complete.Now, let's fix the problem in The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination. navigate here I have done above mentioned reqiurement using Java's runtime class.

Any intelligent fool can make things bigger, more complex, and more violent. Follow him on Twitter, or befriend him on Facebook or Google Plus. Reading the standard error probably isn't required in this case, but I thought at the very least it was at least worth showing, if not good programming practice.

The only possible time you would use exitValue() instead of waitFor() would be when you don't want your program to block waiting on an external process that may never complete.

Throws: SecurityException - If a security manager is present and its checkExit method does not permit exiting with the specified statusSee Also:SecurityException, SecurityManager.checkExit(int), addShutdownHook(java.lang.Thread), removeShutdownHook(java.lang.Thread), runFinalizersOnExit(boolean), halt(int) If you use the version of exec() with a single string for both the program and its arguments, note that the string is parsed using white space as the delimiter via i have tried with the suggestions have given above but i doen't worck with all the commands???? "as: sudo virsh, ?????" so thinks for the answer!!!! While the documentation states this fact, why can't this method wait until it can give a valid answer?A more thorough look at the methods available in the Process class reveals a

This subsequently creates an operating-system-specific process (a running program) with a reference to a Process class returned to the Java VM. Thanks to you I figured out what I needed for it to run properly. If the virtual machine aborts then no guarantee can be made about whether or not any shutdown hooks will be run. his comment is here what warning labels could you see on products to be used in space?

Returns:an approximation to the total amount of memory currently available for future allocated objects, measured in bytes. But I am still getting the Exited with error code 1. As of JDK1.1, the preferred way to translate a Unicode character stream into a byte stream in the local encoding is via the OutputStreamWriter, BufferedWriter, and PrintWriter classes. java system shell runtime run java exec java execute exec command bufferedreader Java exec: How to execute a system command pipeline in Java Perl “exec”: How to execute system commands A

Regards, Vipin Brian Joseph Ranch Hand Posts: 160 posted 13 years ago I found this, it covers the case where your process could lock up. If the boolean argument is true, this method suggests that the Java virtual machine emit debugging information for each method in the virtual machine as it is called. This is similar to the method loadLibrary(String), but it accepts a general file name as an argument rather than just a library name, allowing any file of native code to be This returns a Process object.

If the boolean argument is false, this method causes the virtual machine to stop performing the detailed instruction trace it is performing. Warren Bell Warren Bell Saurav Chetia Greenhorn Posts: 10 posted 13 years ago Hi Michael ! Reply Submitted by alvin on June 3, 2010 - 2:50pm In reply to runtime exec() doesn't work for network directory by caze (not verified) Permalink Windows cmd problem I'm sorry, I