javaping实现的

① java 代码ping ip 1-255都能ping通

没有你说的问题：

packageLianxi.yong2;

importjava.io.IOException;
importjava.net.ConnectException;
importjava.net.InetAddress;
importjava.net.UnknownHostException;

publicclassTest22{
	publicstaticvoidmain(String[]args){
		Stringip="192.168.10.";
		for(inti=0;i<=255;i++){
			InetAddressn;
			try{
				n=InetAddress.getByName(ip+i);
				if(n.isReachable(1)){
					System.out.println(ip+i);
				}
			}catch(UnknownHostExceptione){
				//TODOAuto-generatedcatchblock
				e.printStackTrace();
			}catch(ConnectExceptione){
				//TODOAuto-generatedcatchblock
				System.out.println("==============");
				System.out.println(ip+i);
				System.out.println("==============");
				e.printStackTrace();
			}catch(IOExceptione){
				//TODOAuto-generatedcatchblock
				e.printStackTrace();
			}
		}
	}
}
/*
==============
192.168.10.0
==============
java.net.ConnectException:Permissiondenied
	atjava.net.Inet6AddressImpl.isReachable0(NativeMethod)
	atjava.net.Inet6AddressImpl.isReachable(Inet6AddressImpl.java:77)
	atjava.net.InetAddress.isReachable(InetAddress.java:441)
	atjava.net.InetAddress.isReachable(InetAddress.java:400)
	atLianxi.yong2.Test22.main(Test22.java:15)
192.168.10.100
192.168.10.105
192.168.10.107
192.168.10.109
==============
192.168.10.255
==============
java.net.ConnectException:Permissiondenied
	atjava.net.Inet6AddressImpl.isReachable0(NativeMethod)
	atjava.net.Inet6AddressImpl.isReachable(Inet6AddressImpl.java:77)
	atjava.net.InetAddress.isReachable(InetAddress.java:441)
	atjava.net.InetAddress.isReachable(InetAddress.java:400)
	atLianxi.yong2.Test22.main(Test22.java:15)
*/

② 用java怎么实现调用cmd，并执行ping命令，求完整的语句

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class Test {
public static void main(String[] args) {
Runtime rt = Runtime.getRuntime();
try {
Process p = rt.exec("cmd /c ping www..com -t");
InputStream is = p.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String temp = null;
while((temp =br.readLine()) != null){
System.out.println(temp);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}

③ 用java写个quick ping

简单点的直接使用Runtime的exec来搞定，如下：

publicstaticvoidmain(String[]args)
{
StringBufferbuf=newStringBuffer();
Strings="";
Processprocess;
try
{
process=Runtime.getRuntime().exec("cmd/c"+"ping127.0.0.1");
BufferedReaderbr=newBufferedReader(newInputStreamReader(
process.getInputStream()));
while((s=br.readLine())!=null)
{
buf.append(s+"
");
}
process.waitFor();
System.out.println(buf);
}catch(Exceptionex)
{
ex.printStackTrace();
}
}

复杂点的，可以查看Oracle的官网文档，实现了完整的ping:(粘贴下面的路径到浏览器地址栏，加上http://)

docs.oracle.com/javase/1.5.0/docs/guide/nio/example/Ping.java

④ 用JAVA实现ping并给出详细解释

速度 = 距离 / 时间；

java 肯定是能实现的。前提需要移动设备，测量距离；

或者调用 XXX地图的API，你自身有定位服务，能计算出距离；

⑤ 如何用java执行命令行

Java运行命令行并获取返回值，下面以简单的Java执行ping命令（ping 127.0.0.1 -t
）为例，代码如下：

Processp=Runtime.getRuntime().exec("ping127.0.0.1-t");
Processp=Runtime.getRuntime().exec("javac");
InputStreamis=p.getInputStream();
BufferedReaderreader=newBufferedReader(newInputStreamReader(is));
Stringline;
while((line=reader.readLine())!=null){
System.out.println(line);
}
p.waitFor();
is.close();
reader.close();
p.destroy();
}

⑥ 有谁知道怎样使用java编写ping程序

jpcap你要自己下好相应的包和配置，不知道的就在网上搜吧··

import java.net.InetAddress;
import java.util.ArrayList;
import java.util.GregorianCalendar;
import java.util.List;
import jpcap.JpcapCaptor;
import jpcap.JpcapSender;
import jpcap.NetworkInterface;
import jpcap.packet.EthernetPacket;
import jpcap.packet.ICMPPacket;
import jpcap.packet.IPPacket;

public class JPing {

private NetworkInterface[] devices = JpcapCaptor.getDeviceList();
private JpcapSender sender;
private JpcapCaptor jpcap;
private ICMPPacket icmpPacket;
private List<String> listResult = new ArrayList<String>();

/**
* 组织ICMP报文发送，并开启线程接收报文
* @param ip
*/
public void ping(String ip) {
try {
jpcap = JpcapCaptor.openDevice(devices[0], 200, false, 20);
sender = jpcap.getJpcapSenderInstance();
jpcap.setFilter("icmp", true);// 过滤器，只接受ICMP报文
icmpPacket = new ICMPPacket();
icmpPacket.type = ICMPPacket.ICMP_ECHO; // 发送回显请求报文

icmpPacket.setIPv4Parameter(0, false, false, false, 0, false,
false, false, 0, 1010101, 100, IPPacket.IPPROTO_ICMP,
devices[0].addresses[1].address, InetAddress.getByName(ip));
// 随意的32bytes数据
icmpPacket.data = "".getBytes();
EthernetPacket ethernetPacket = new EthernetPacket();
ethernetPacket.frametype = EthernetPacket.ETHERTYPE_IP;
ethernetPacket.src_mac = devices[0].mac_address;
// 广播地址
ethernetPacket.dst_mac = new byte[] { (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff };
icmpPacket.datalink = ethernetPacket;
listResult.add("Pinging " + icmpPacket.dst_ip + " with "
+ icmpPacket.data.length + " bytes of data: ");
startCapThread(jpcap);
for (int i = 0; i < 5; i++) {
icmpPacket.sec = 0;
//icmpPacket.usec = System.currentTimeMillis();
icmpPacket.usec = new GregorianCalendar().getTimeInMillis();// 记录发送时间
icmpPacket.seq = (short) (1000 + i);
icmpPacket.id = (short) (999 + i);
sender.sendPacket(icmpPacket);
try {
Thread.sleep(1000);
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}

/**
* 接收ICMP报文
* @param jpcap
*/
public void getIcmpPacket(JpcapCaptor jpcapCaptor) {
try {
while (true) {
long tmp = 0;
String tmpStr = null;
ICMPPacket rp;

rp = (ICMPPacket) jpcapCaptor.getPacket();

if ((rp != null) && (rp.seq - rp.id == 1)
&& (rp.type == ICMPPacket.ICMP_ECHOREPLY)) {// 若是ICMP回应报文，则列出。。。
tmp = (rp.sec * 1000 + rp.usec / 1000 - icmpPacket.sec
* 1000 - icmpPacket.usec); // 计算发送与接受的时间差
if (tmp <= 0)
tmpStr = " < 1 ms ";
else
tmpStr = "= " + tmp + " ms ";

System.out.println("Reply from "
+ rp.src_ip.getHostAddress() + ": bytes = "
+ rp.data.length + " time " + tmpStr + "TTL = "
+ rp.hop_limit);

listResult.add("Reply from " + rp.src_ip.getHostAddress()
+ ": bytes = " + rp.data.length + " time " + tmpStr
+ "TTL = " + rp.hop_limit);
}
}
} catch (Exception e) {
e.printStackTrace();
}

}

/**
* 接收ICMP报文
* @param jpcap
*/
public void startCapThread(final JpcapCaptor jpcap) {

Runnable runner = new Runnable() {
public void run() {
getIcmpPacket(jpcap);
}
};
new Thread(runner).start();
}

public static void main(String[] args) {
new JPing().ping("www..com");
}
}