network bridge learning，bridgelearning,package bof;

network bridge learning，bridgelearning,package bof;

package bof;import java.util.Scanner;public class BOF {    public static void main(String[] args) {        System.out.println("===Please enter a frame with source & destination and port numbers of a bridge, with space between each other:");        Scanner sc = new Scanner(System.in);        String str = sc.nextLine();        String[] s = str.split(" ");        System.out.println("Source: " + s[0]);        System.out.println("Destination: " + s[1]);        System.out.println("Arrival at Port Number: " + s[2]);        System.out.println("===Please enter current FDB with space between each other:");        Scanner sc1 = new Scanner(System.in);        String str1 = sc1.nextLine();        String[] f = str1.split(" ");        System.out.println("Current FDB: " + str1);        if (s[0].equals(f[0]) && s[2].equals(f[1])) {            System.out.println("No update.");        } else            System.out.println("Update FDB. \\r\\nNew FDB: " + str1 + " " + s[0] + " " + s[2]);        if ((s[1].equals(f[0]) && s[2].equals(f[1]))||(s[1].equals(f[2]) && s[2].equals(f[3]))) {            System.out.println("Discard.");        } else            System.out.println("Forward on all out ports.");    }}//该片段来自于http://byrx.net