Generating Unique Numbers

Generating Unique Numbers

Here is sample code:

 import;public class UniqueNumberGenerator{    static final SecureRandom random = new SecureRandom();    static final StringBuffer buffer = new StringBuffer(30);    static    {        random.nextInt();    }    public static String getNextUID()    {        buffer.setLength(0);        Object obj = new Object();        int hash = obj.hashCode();        int rand = random.nextInt();        long time = System.currentTimeMillis() & 0xFFFFFFFF;buffer.append(Integer.toHexString(rand)).append(Long.toHexString(time)).append(Integer.toHexString(hash));        obj = null;        return buffer.toString();    }}

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