java调用命令,java关闭某进程

//显示进程
Process process = Runtime.getRuntime().exec("tasklist");

Scanner in=new Scanner(process.getInputStream());
while(in.hasNextLine()){
String p=in.nextLine();
//打印所有进程
System.out.println(p);
if(p.contains("javaw.exe")){
StringBuffer buf=new StringBuffer();
for(int i=0;i<p.length();i++){
char ch=p.charAt(i);
if(ch != ' '){
buf.append(ch);
}
}
//打印 javaw.exe的pid
System.out.println(buf.toString().split("Console")[0].substring("javaw.exe".length()));
}
}

//杀死进程,1,纯dos下,开cmd窗口 ntsd -c q -p PID
//Runtime.getRuntime().exec("ntsd -c q -p 1528");
//2 ,tskill PID(process ID)
//Runtime.getRuntime().exec("tskill 3188");