Java command line In debian linux

Recently, linjdk 5.0 is based on debian 1.7. You need to run the command line to close the chrome browser and run it directly on the command line:

[Plain]
Kill-9 'ps-ef | grep chromium-browse | awk '{print $2 }''
No problem. The browser is closed correctly, but in java:
[Java]
String killChrome = "kill-9 'ps-ef | grep chromium-browse | awk' {print $2 }''";
Runtime.getruntime(cmd.exe c (killChrome); www.2cto.com

But there is no response, but I run the following command to open the chrome browser:
[Java]
String openChrome = "curl http: // localhost: 8080/runapplication = google-chrome ";
Runtime.getruntime(cmd.exe c (openChrome );

They are all perfectly opened. I don't know why I can't close it. Please answer!

In addition, in java, you can call firefox or chrome to open the specified URL, or use the command line,