Runtime.exec() sucks!!!!

自己项目中使用到了

Runtime rt = Runtime.getRuntime();Process p = rt.exec("query session");
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Navigate yourself around pitfalls related to the Runtime.exec() method
A single string that represents both the program to execute and any arguments to that program
An array of strings that separate the program from its arguments
An array of environment variables
Pass in the environment variables in the form name=value. 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 the StringTokenizer class.
Stumbling into an IllegalThreadStateException
The first pitfall relating to Runtime.exec() is the IllegalThreadStateException. The prevalent first test of an API is to code its most obvious methods. For example, to execute a process that is external to the Java VM, we use the exec() method. To see the value that the external process returns, we use the exitValue()method on the Process class. In our first example, we will attempt to execute the Java compiler (javac.exe):

 
         
        
        
原标题：Runtime.exec() sucks!!!!
        
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