JAVAÀïµÄPINGºÍTELNET
JAVAÀïµÄPINGÊÇÔÚJDK 1.5ºóÓÃÁËеĺ¯ÊýisreachableȥʵÏÖ,¾ßÌå½éÉÜÈçÏÂ:
InetAddress¶ÔÏóµÄ³£Ó÷½·¨
InetAddressÀàÓкܶàget·½·¨£¬ÓÃÀ´»ñÈ¡Ö÷»úÃû£¬Ö÷»úµØÖ·µÈÐÅÏ¢¡£Ö÷ÒªÓУº
byte[] getAddress() ·µ»Ø´ÎInetAddress¶ÔÏóµÄÔʼIPµØÖ·£¬±£´æÎªÒ»¸öbyteÊý×é
String getCanonicalHostName() »ñÈ¡´ËIPµØÖ·µÄÍêÈ«ÏÞ¶¨ÓòÃû
String getHostAddress() »ñÈ¡IPµØÖ·µÄ×Ö·û´®£¬·µ»ØÎªÒ»¸öString
String getHostName() »ñÈ¡´ËIPµØÖ·µÄÖ÷»úÃû
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package org.dakiler.javanet.chapter1;
import java.net.InetAddress;
public class Example3
{
public static void main(String args[])throws Exception
{
InetAddress address=InetAddress.getByName("www.microsoft.com");
System.out.println("ip: "+address.getHostAddress());
System.out.println("host: "+address.getHostName());
System.out.println("canonical host name: "+address.getCanonicalHostName());
byte[] bytes=address.getAddress();
for(byte b:bytes)
{
if(b>=0)System.out.print(b);
else System.out.print(256+b);
System.out.print(" ");
}
}
}
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½á¹ûÈçÏ£º
ip: 207.46.19.254
host: www.micro
Ïà¹ØÎĵµ£º
ǰЩÌì±àС³ÌÐò£¬Ð´ÆäÖÐÓÐÒ»¸ö×Ô¼ºÊµÏÖµÄstackµÄpopÈçÏ£º
public class Stack<T>{
private ArrayList<T> list;
public Stack(){
list = new ArrayList<T>();
}
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