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public interface MyConstant
{
public static final String STATE_01= "01";
}
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this.state=MyConstant.STATE_01;
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<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">
    <description>my tag</description>
    <display-name>my tag</display-name>
    <tlib-version>1.0</tlib-version>
    <short-name>my-tag</short-name>
    <uri>/my-tag</uri>
    <tag>
    <!--
        ÔÚJSPÖгõʼ»¯MyConstant³£Á¿£¬ÒÔ±ãJSTLÖÐÒýÓá£
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        <description>MyConstant³£Á¿</description>
        <name>MyConstant</name>
        <tag-class>com.test.util.tag.MyConstantTag</tag-class>
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