Replace/remove character in a String

To replace all occurences of a given character :

String.replaceAll("n", ""); // Remove all n
String.replaceAll("n", "r"); // Replace n by r

To replace a character at a specified position :

public static String replaceCharAt(String s, int pos, char c) {
return s.substring(0,pos) + c + s.substring(pos+1);
}

To remove a character :

public static String removeChar(String s, char c) {
String r = "";
for (int i = 0; i < s.length(); i ++) {
if (s.charAt(i) != c) r += s.charAt(i);
}
return r;
}

To remove a character at a specified position:

public static String removeCharAt(String s, int pos) {
return s.substring(0,pos)+s.substring(pos+1);
}

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04 Apr 07 | Java, Main | Comments (0)

Speed Up Your Internet Connection

This is a great and free service that’s getting to be very popular. It’s called OpenDNS, and what it does is to offer a better DNS service. You can use OpenDNS immediately at home, at work, or on your mobile.

Confused? What’s DNS anyway? Read up about DNS first (Wikipedia) .

I tried setting it up on my home’s wireless network, and got everything up within a minute! (Basically I just needed to update my wireless router’s DNS settings to that of OpenDNS’s)

OpenDNS helps you navigate the Internet in a safer, faster, smarter and more reliable way. It requires nothing to download. OpenDNS doesn’t replace your existing Internet connection, it just makes it better.

Try it out! Visit OpenDNS.

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03 Apr 07 | Main, The Big Net | Comments (0)