java怎么执行外部命令？

[allenzz]

java怎么执行外部命令？

[ghw]

好多这样的贴子，自己搜索一下吧

[vdragon]

java.lang.Runtime
exec
public Process exec(String command)
throws IOException
Executes the specified string command in a separate process.
The command argument is parsed into tokens and then executed as a command in a separate process. The token parsing is done by a StringTokenizer created by the call:

new StringTokenizer(command)

with no further modifications of the character categories. This method has exactly the same effect as exec(command, null).
Parameters:
command - a specified system command.
Returns:
a Process object for managing the subprocess.
Throws:
SecurityException - if a security manager exists and its checkExec method doesn't allow creation of a subprocess.

[hexiaofeng]

String s = "r.exe";
Process proc = Runtime.getRuntime().exec(s);