模拟Ping操作的一个Java类，模拟pingjava,```javaimpor

模拟Ping操作的一个Java类，模拟pingjava,```javaimpor

```javaimport java.io.IOException;import java.net.InetAddress;import java.net.UnknownHostException;

/* * Created by QiuJU * on 2014/9/21. /public class SimplePing implements Runnable { private final Object mEndLock = new Object(); private boolean IsEnd = false;

private int arrivedCount = 0;private int Count;private int TimeOut;private String Name;private int mEndCount;private String mIp = null;private float mLossRate = 1f;private float mDelay = 0;public SimplePing(String name, int count, int timeOut) {    Count = mEndCount = count;    TimeOut = timeOut;    Name = name;    for (int i = 0; i < mEndCount; i++) {        Thread thread = new Thread(this);        thread.setDaemon(true);        thread.start();    }    if (!IsEnd) {        try {            synchronized (mEndLock) {                mEndLock.wait();            }        } catch (InterruptedException e) {            e.printStackTrace();        }    }}private void setEnd(boolean isArrived, long delay, String ip) {    synchronized (mEndLock) {        Count--;        if (isArrived) {            arrivedCount++;            mDelay = (mDelay + delay) / 2f;            if (ip != null)                mIp = ip;        }    }    if (Count == 0)        setEnd();}private void setEnd() {    mLossRate = (mEndCount - arrivedCount) / mEndCount;    IsEnd = true;    synchronized (mEndLock) {        mEndLock.notifyAll();    }}@Overridepublic void run() {    long delay = 0;    boolean isArrived = false;    String ip = null;    try {        long startTime = System.currentTimeMillis();        InetAddress address = InetAddress.getByName(Name);        isArrived = address.isReachable(TimeOut);        delay = System.currentTimeMillis() - startTime;        ip = address.getHostAddress();    } catch (UnknownHostException e) {        e.printStackTrace();    } catch (IOException e) {        e.printStackTrace();    } catch (Exception e) {        e.printStackTrace();    } finally {        setEnd(isArrived, delay, ip);    }}public String getIp() {    return mIp;}public float getLossRate() {    return mLossRate;}public float getDelay() {    return mDelay;}public boolean getIsSucceed() {    return arrivedCount > 0;}

}在类中使用的是：javalong startTime = System.currentTimeMillis(); InetAddress address = InetAddress.getByName(Name); isArrived = address.isReachable(TimeOut); delay = System.currentTimeMillis() - startTime; ip = address.getHostAddress();```其中的：address.isReachable(TimeOut);方法，但是这个方法有一定局限性；当是Root模式下会发送ICMP进行Ping操作，这就比较真实了；但是如果是非Root模式下则是使用的Socket进行的模拟。 之所以说是中间类，也就是因为这个原因没有采用这个类。