init project...

Signed-off-by: 502647092 <jtb1@163.com>

src/main/java/fr/xephi/authme/security/RandomString.java

@@ -0,0 +1,38 @@
+package fr.xephi.authme.security;
+
+import java.util.Calendar;
+import java.util.Random;
+
+/**
+ *
+ * @author Xephi59
+ */
+public class RandomString {
+
+	private static final char[] chars = new char[36];
+
+	private final char[] buf;
+
+	private final Random random = new Random();
+
+	public RandomString(int length) {
+		if (length < 1)
+			throw new IllegalArgumentException("length < 1: " + length);
+		buf = new char[length];
+		random.setSeed(Calendar.getInstance().getTimeInMillis());
+	}
+
+	static {
+		for (int idx = 0; idx < 10; ++idx)
+			chars[idx] = (char) ('0' + idx);
+		for (int idx = 10; idx < 36; ++idx)
+			chars[idx] = (char) ('a' + idx - 10);
+	}
+
+	public String nextString() {
+		for (int idx = 0; idx < buf.length; ++idx)
+			buf[idx] = chars[random.nextInt(chars.length)];
+		return new String(buf);
+	}
+
+}