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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
class cmdTest {
public static void main(String[] args) {
try {
Process process = Runtime.getRuntime().exec("arp -a");
BufferedReader br = new BufferedReader(new InputStreamReader(
process.getInputStream()));
while(br.readLine()!=null){
System.out.println(br.readLine());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}