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¡¾1¡¿SerialNumÀà
package example.thread.threadLocal;
public class SerialNum {
    private static int nextSerialNum = 1;
@SuppressWarnings("unchecked")
    private static ThreadLocal serialNum = new ThreadLocal() {
        protected synchronized Object initialValue() {
            return new Integer(nextSerialNum++);      
}                                                           
    };
    public static int get() {
        return ((Integer) (serialNum.get())).intValue();
    }
    
    @SuppressWarnings("unchecked")
public static void set(Integer newSerial){
        serialNum.set(newSerial);
    }
}
¡¾2¡¿GetSerialNumThread package example.thread.threadLocal;
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