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public static String byteToString(byte src)
{
    String desc = null;
    int i = 0;    //È¡1¸ö×Ö½Ú
    i = src&0xFF;
    desc = Integer.toHexString(i);
    if (desc.length() == 1)
    {         //µ±Ö»ÓÐ1Î»Ê±Ç°Ãæ²¹0
        desc = "0" + desc;
    }
    return desc;
}


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import java.awt.*;
import java.awt.event.*;
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