字符串的拆分问题

[zhaixin_12]

想要把ip分成数组
public class Te
{
public static void main(String sd[])
{
String ip="127.0.0.1";
String ipa[]=ip.split("//.");
for (int i = 0; i<4; i++)
{
System.out.println (ipa[i]);
}
}
}
但是总是拆分不了

[for_cyan]

public class Te 
{ 
public static void main(String sd[]) 
{ 
String ip="127.0.0.1"; 
String ipa[]=ip.split("."); 
for (int i = 0; i <ipa.length; i++) 
{ 
System.out.println (ipa[i]); 
} 
} 
} 

[zhaixin_12]

这样不行

[老廉颇尚能饭否]

String ip="127.0.0.1";
String[] ipa=ip.split("\\.");
for (int i = 0; i <ipa.length; i++)
{
System.out.println (ipa[i]);
}

[finalzhzhk]

//改\\


public static void main(String sd[])
{
String ip="127.0.0.1";
String ipa[]=ip.split("\\.");
for (int i = 0; i <4; i++)
{
System.out.println (ipa[i]);
}
}

[zhaixin_12]

原来是这样啊，谢谢

[cursor_wang]

或者用这样也可以．

import java.util.*;
class Te{
	public static void main(String[] args){
		String ip="127.0.0.5";
		String[] ipa=new String[ip.length()];
		StringTokenizer st=new StringTokenizer(ip,".");
		int i=1;
		while(st.hasMoreTokens()){
			ipa[i]=st.nextToken();
			System.out.println(ipa[i]);
			i++;
		}
	}
}