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something obj=new something();
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clone
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ÁËjava.lang.Cloneable½Ó¿ÚµÄÀà¡£Èç¹ûûÓÐʵÏָýӿڣ¬Ôò»áÅ׳öCloneNotSupportedExceptionÒì³£¡£Èô³ÌÐò
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class Something
{
    //codes
    public Something createClone()
    {
        Something obj=null;
        try
        {
            obj=(Something)clone();
        }
        catch(CloneNotSupportedException e)
        {
            e.printStackTrack();
        }
        return obj;
    }
}
newInstance
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someobj.getClass().newInstance();
//or next codes
Something obj=Class.forName(Something).newIntance();
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