Back to project page BLEMeshChat.
The source code is released under:
GNU General Public License
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package pro.dbro.ble.util; //from w ww . j a v a2 s .co m import java.util.Random; public class RandomString { private static final char[] symbols; static { StringBuilder tmp = new StringBuilder(); for (char ch = '0'; ch <= '9'; ++ch) tmp.append(ch); for (char ch = 'a'; ch <= 'z'; ++ch) tmp.append(ch); symbols = tmp.toString().toCharArray(); } private final Random random = new Random(); private final char[] buf; public RandomString(int length) { if (length < 1) throw new IllegalArgumentException("length < 1: " + length); buf = new char[length]; } public String nextString() { for (int idx = 0; idx < buf.length; ++idx) buf[idx] = symbols[random.nextInt(symbols.length)]; return new String(buf); } }