How to call cmd in Java to compress files

Today, I encountered a strange problem when calling the windows compression command in java:

Copy codeThe Code is as follows:
String cmd = "C:/Program Files (x86)/WinRAR/rar.exe a c:/test.rar c:/test. log ";

// System. out. println (cmd );
Process proc = runtime.getruntime(cmd.exe c (cmd );

The above code is executed normally on Xp, win7, and windows server2003. After the code is transferred to Windows Server2008, a java exception is thrown.
After two hours of research, the above Code is modified as follows:

Copy codeThe Code is as follows:
String [] cmd = {"C:/Program Files (x86)/WinRAR/rar.exe", "a", "C:/test.rar", "c:/test. log "};

// System. out. println (cmd );
Process proc = runtime.getruntime(cmd.exe c (cmd );

It is normal. There is another benefit in writing this, which can solve the problem of space in the file path.