java上直接得到屏幕结果的

 import java.io.*;
            class Main {
               public static void main(String[] args) {
               try {
               String cmd = "ping ";
               String param ="202.112.58.200";
               Process child = Runtime.getRuntime().exec(cmd+param);
               // 获得ping的输出
               InputStream child_in = child.getInputStream();
               int c;
               while ((c = child_in.read()) != -1) {
               // System.out.println("kkk");
               System.out.print((char)c);
               }
               child_in.close();
               } catch (IOException e) {
               System.err.println(e);
               }
               }
               }