jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/doclets/formats/html/AbstractMemberWriter.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/AbstractMemberWriter.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/AbstractMemberWriter.java

Wed, 27 Apr 2016 01:34:52 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:34:52 +0800
changeset 0: 959103a6100f
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

 /*
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.tools.doclets.formats.html;
 import java.lang.reflect.Modifier;
 import java.util.*;
 import com.sun.javadoc.*;
 import com.sun.tools.doclets.formats.html.markup.*;
 import com.sun.tools.doclets.internal.toolkit.*;
 import com.sun.tools.doclets.internal.toolkit.taglets.*;
 import com.sun.tools.doclets.internal.toolkit.util.*;
 /**
  * The base class for member writers.
  *
  *  <p><b>This is NOT part of any supported API.
  *  If you write code that depends on this, you do so at your own risk.
  *  This code and its internal interfaces are subject to change or
  *  deletion without notice.</b>
  *
  * @author Robert Field
  * @author Atul M Dambalkar
  * @author Jamie Ho (Re-write)
  * @author Bhavesh Patel (Modified)
  */
 public abstract class AbstractMemberWriter {
     protected final ConfigurationImpl configuration;
     protected final SubWriterHolderWriter writer;
     protected final ClassDoc classdoc;
     protected Map<String,Integer> typeMap = new LinkedHashMap<String,Integer>();
     protected Set<MethodTypes> methodTypes = EnumSet.noneOf(MethodTypes.class);
     private int methodTypesOr = 0;
     public final boolean nodepr;
     protected boolean printedSummaryHeader = false;
     public AbstractMemberWriter(SubWriterHolderWriter writer, ClassDoc classdoc) {
         this.configuration = writer.configuration;
         this.writer = writer;
         this.nodepr = configuration.nodeprecated;
         this.classdoc = classdoc;
     }
     public AbstractMemberWriter(SubWriterHolderWriter writer) {
         this(writer, null);
     }
     /*** abstracts ***/
     /**
      * Add the summary label for the member.
      *
      * @param memberTree the content tree to which the label will be added
      */
     public abstract void addSummaryLabel(Content memberTree);
     /**
      * Get the summary for the member summary table.
      *
      * @return a string for the table summary
      */
     public abstract String getTableSummary();
     /**
      * Get the caption for the member summary table.
      *
      * @return a string for the table caption
      */
     public abstract Content getCaption();
     /**
      * Get the summary table header for the member.
      *
      * @param member the member to be documented
      * @return the summary table header
      */
     public abstract String[] getSummaryTableHeader(ProgramElementDoc member);
     /**
      * Add inherited summary lable for the member.
      *
      * @param cd the class doc to which to link to
      * @param inheritedTree the content tree to which the inherited summary label will be added
      */
     public abstract void addInheritedSummaryLabel(ClassDoc cd, Content inheritedTree);
     /**
      * Add the anchor for the summary section of the member.
      *
      * @param cd the class doc to be documented
      * @param memberTree the content tree to which the summary anchor will be added
      */
     public abstract void addSummaryAnchor(ClassDoc cd, Content memberTree);
     /**
      * Add the anchor for the inherited summary section of the member.
      *
      * @param cd the class doc to be documented
      * @param inheritedTree the content tree to which the inherited summary anchor will be added
      */
     public abstract void addInheritedSummaryAnchor(ClassDoc cd, Content inheritedTree);
     /**
      * Add the summary type for the member.
      *
      * @param member the member to be documented
      * @param tdSummaryType the content tree to which the type will be added
      */
     protected abstract void addSummaryType(ProgramElementDoc member,
             Content tdSummaryType);
     /**
      * Add the summary link for the member.
      *
      * @param cd the class doc to be documented
      * @param member the member to be documented
      * @param tdSummary the content tree to which the link will be added
      */
     protected void addSummaryLink(ClassDoc cd, ProgramElementDoc member,
             Content tdSummary) {
         addSummaryLink(LinkInfoImpl.Kind.MEMBER, cd, member, tdSummary);
     }
     /**
      * Add the summary link for the member.
      *
      * @param context the id of the context where the link will be printed
      * @param cd the class doc to be documented
      * @param member the member to be documented
      * @param tdSummary the content tree to which the summary link will be added
      */
     protected abstract void addSummaryLink(LinkInfoImpl.Kind context,
             ClassDoc cd, ProgramElementDoc member, Content tdSummary);
     /**
      * Add the inherited summary link for the member.
      *
      * @param cd the class doc to be documented
      * @param member the member to be documented
      * @param linksTree the content tree to which the inherited summary link will be added
      */
     protected abstract void addInheritedSummaryLink(ClassDoc cd,
             ProgramElementDoc member, Content linksTree);
     /**
      * Get the deprecated link.
      *
      * @param member the member being linked to
      * @return a content tree representing the link
      */
     protected abstract Content getDeprecatedLink(ProgramElementDoc member);
     /**
      * Get the navigation summary link.
      *
      * @param cd the class doc to be documented
      * @param link true if its a link else the label to be printed
      * @return a content tree for the navigation summary link.
      */
     protected abstract Content getNavSummaryLink(ClassDoc cd, boolean link);
     /**
      * Add the navigation detail link.
      *
      * @param link true if its a link else the label to be printed
      * @param liNav the content tree to which the navigation detail link will be added
      */
     protected abstract void addNavDetailLink(boolean link, Content liNav);
     /**
      * Add the member name to the content tree.
      *
      * @param name the member name to be added to the content tree.
      * @param htmltree the content tree to which the name will be added.
      */
     protected void addName(String name, Content htmltree) {
         htmltree.addContent(name);
     }
     /**
      * Return a string describing the access modifier flags.
      * Don't include native or synchronized.
      *
      * The modifier names are returned in canonical order, as
      * specified by <em>The Java Language Specification</em>.
      */
     protected String modifierString(MemberDoc member) {
         int ms = member.modifierSpecifier();
         int no = Modifier.NATIVE | Modifier.SYNCHRONIZED;
     return Modifier.toString(ms & ~no);
     }
     protected String typeString(MemberDoc member) {
         String type = "";
         if (member instanceof MethodDoc) {
             type = ((MethodDoc)member).returnType().toString();
         } else if (member instanceof FieldDoc) {
             type = ((FieldDoc)member).type().toString();
         }
         return type;
     }
     /**
      * Add the modifier for the member.
      *
      * @param member the member for which teh modifier will be added.
      * @param htmltree the content tree to which the modifier information will be added.
      */
     protected void addModifiers(MemberDoc member, Content htmltree) {
         String mod = modifierString(member);
         // According to JLS, we should not be showing public modifier for
         // interface methods.
         if ((member.isField() || member.isMethod()) &&
             writer instanceof ClassWriterImpl &&
             ((ClassWriterImpl) writer).getClassDoc().isInterface()) {
             // This check for isDefault() and the default modifier needs to be
             // added for it to appear on the method details section. Once the
             // default modifier is added to the Modifier list on DocEnv and once
             // it is updated to use the javax.lang.model.element.Modifier, we
             // will need to remove this.
             mod = (member.isMethod() && ((MethodDoc)member).isDefault()) ?
                     Util.replaceText(mod, "public", "default").trim() :
                     Util.replaceText(mod, "public", "").trim();
         }
         if(mod.length() > 0) {
             htmltree.addContent(mod);
             htmltree.addContent(writer.getSpace());
         }
     }
     protected String makeSpace(int len) {
         if (len <= 0) {
             return "";
         }
         StringBuilder sb = new StringBuilder(len);
         for (int i = 0; i < len; i++) {
             sb.append(' ');
     }
         return sb.toString();
     }
     /**
      * Add the modifier and type for the member in the member summary.
      *
      * @param member the member to add the type for
      * @param type the type to add
      * @param tdSummaryType the content tree to which the modified and type will be added
      */
     protected void addModifierAndType(ProgramElementDoc member, Type type,
             Content tdSummaryType) {
         HtmlTree code = new HtmlTree(HtmlTag.CODE);
         addModifier(member, code);
         if (type == null) {
             if (member.isClass()) {
                 code.addContent("class");
             } else {
                 code.addContent("interface");
             }
             code.addContent(writer.getSpace());
         } else {
             if (member instanceof ExecutableMemberDoc &&
                     ((ExecutableMemberDoc) member).typeParameters().length > 0) {
                 Content typeParameters = ((AbstractExecutableMemberWriter) this).getTypeParameters(
                         (ExecutableMemberDoc) member);
                     code.addContent(typeParameters);
                 //Code to avoid ugly wrapping in member summary table.
                 if (typeParameters.charCount() > 10) {
                     code.addContent(new HtmlTree(HtmlTag.BR));
                 } else {
                     code.addContent(writer.getSpace());
                 }
                 code.addContent(
                         writer.getLink(new LinkInfoImpl(configuration,
                         LinkInfoImpl.Kind.SUMMARY_RETURN_TYPE, type)));
             } else {
                 code.addContent(
                         writer.getLink(new LinkInfoImpl(configuration,
                         LinkInfoImpl.Kind.SUMMARY_RETURN_TYPE, type)));
             }
         }
         tdSummaryType.addContent(code);
     }
     /**
      * Add the modifier for the member.
      *
      * @param member the member to add the type for
      * @param code the content tree to which the modified will be added
      */
     private void addModifier(ProgramElementDoc member, Content code) {
         if (member.isProtected()) {
             code.addContent("protected ");
         } else if (member.isPrivate()) {
             code.addContent("private ");
         } else if (!member.isPublic()) { // Package private
             code.addContent(configuration.getText("doclet.Package_private"));
             code.addContent(" ");
         }
         if (member.isMethod()) {
             if (!(member.containingClass().isInterface()) &&
                     ((MethodDoc)member).isAbstract()) {
                 code.addContent("abstract ");
             }
             // This check for isDefault() and the default modifier needs to be
             // added for it to appear on the "Modifier and Type" column in the
             // method summary section. Once the default modifier is added
             // to the Modifier list on DocEnv and once it is updated to use the
             // javax.lang.model.element.Modifier, we will need to remove this.
             if (((MethodDoc)member).isDefault()) {
                 code.addContent("default ");
             }
         }
         if (member.isStatic()) {
             code.addContent("static ");
         }
     }
     /**
      * Add the deprecated information for the given member.
      *
      * @param member the member being documented.
      * @param contentTree the content tree to which the deprecated information will be added.
      */
     protected void addDeprecatedInfo(ProgramElementDoc member, Content contentTree) {
         Content output = (new DeprecatedTaglet()).getTagletOutput(member,
             writer.getTagletWriterInstance(false));
         if (!output.isEmpty()) {
             Content deprecatedContent = output;
             Content div = HtmlTree.DIV(HtmlStyle.block, deprecatedContent);
             contentTree.addContent(div);
         }
     }
     /**
      * Add the comment for the given member.
      *
      * @param member the member being documented.
      * @param htmltree the content tree to which the comment will be added.
      */
     protected void addComment(ProgramElementDoc member, Content htmltree) {
         if (member.inlineTags().length > 0) {
             writer.addInlineComment(member, htmltree);
         }
     }
     protected String name(ProgramElementDoc member) {
         return member.name();
     }
     /**
      * Get the header for the section.
      *
      * @param member the member being documented.
      * @return a header content for the section.
      */
     protected Content getHead(MemberDoc member) {
         Content memberContent = new StringContent(member.name());
         Content heading = HtmlTree.HEADING(HtmlConstants.MEMBER_HEADING, memberContent);
         return heading;
     }
     /**
     * Return true if the given <code>ProgramElement</code> is inherited
     * by the class that is being documented.
     *
     * @param ped The <code>ProgramElement</code> being checked.
     * return true if the <code>ProgramElement</code> is being inherited and
     * false otherwise.
     */
     protected boolean isInherited(ProgramElementDoc ped){
         if(ped.isPrivate() || (ped.isPackagePrivate() &&
             ! ped.containingPackage().equals(classdoc.containingPackage()))){
             return false;
         }
         return true;
     }
     /**
      * Add deprecated information to the documentation tree
      *
      * @param deprmembers list of deprecated members
      * @param headingKey the caption for the deprecated members table
      * @param tableSummary the summary for the deprecated members table
      * @param tableHeader table headers for the deprecated members table
      * @param contentTree the content tree to which the deprecated members table will be added
      */
     protected void addDeprecatedAPI(List<Doc> deprmembers, String headingKey,
             String tableSummary, String[] tableHeader, Content contentTree) {
         if (deprmembers.size() > 0) {
             Content table = HtmlTree.TABLE(HtmlStyle.deprecatedSummary, 0, 3, 0, tableSummary,
                 writer.getTableCaption(configuration.getResource(headingKey)));
             table.addContent(writer.getSummaryTableHeader(tableHeader, "col"));
             Content tbody = new HtmlTree(HtmlTag.TBODY);
             for (int i = 0; i < deprmembers.size(); i++) {
                 ProgramElementDoc member =(ProgramElementDoc)deprmembers.get(i);
                 HtmlTree td = HtmlTree.TD(HtmlStyle.colOne, getDeprecatedLink(member));
                 if (member.tags("deprecated").length > 0)
                     writer.addInlineDeprecatedComment(member,
                             member.tags("deprecated")[0], td);
                 HtmlTree tr = HtmlTree.TR(td);
                 if (i%2 == 0)
                     tr.addStyle(HtmlStyle.altColor);
                 else
                     tr.addStyle(HtmlStyle.rowColor);
                 tbody.addContent(tr);
             }
             table.addContent(tbody);
             Content li = HtmlTree.LI(HtmlStyle.blockList, table);
             Content ul = HtmlTree.UL(HtmlStyle.blockList, li);
             contentTree.addContent(ul);
         }
     }
     /**
      * Add use information to the documentation tree.
      *
      * @param mems list of program elements for which the use information will be added
      * @param heading the section heading
      * @param tableSummary the summary for the use table
      * @param contentTree the content tree to which the use information will be added
      */
     protected void addUseInfo(List<? extends ProgramElementDoc> mems,
             Content heading, String tableSummary, Content contentTree) {
         if (mems == null) {
             return;
         }
         List<? extends ProgramElementDoc> members = mems;
         boolean printedUseTableHeader = false;
         if (members.size() > 0) {
             Content table = HtmlTree.TABLE(HtmlStyle.useSummary, 0, 3, 0, tableSummary,
                     writer.getTableCaption(heading));
             Content tbody = new HtmlTree(HtmlTag.TBODY);
             Iterator<? extends ProgramElementDoc> it = members.iterator();
             for (int i = 0; it.hasNext(); i++) {
                 ProgramElementDoc pgmdoc = it.next();
                 ClassDoc cd = pgmdoc.containingClass();
                 if (!printedUseTableHeader) {
                     table.addContent(writer.getSummaryTableHeader(
                             this.getSummaryTableHeader(pgmdoc), "col"));
                     printedUseTableHeader = true;
                 }
                 HtmlTree tr = new HtmlTree(HtmlTag.TR);
                 if (i % 2 == 0) {
                     tr.addStyle(HtmlStyle.altColor);
                 } else {
                     tr.addStyle(HtmlStyle.rowColor);
                 }
                 HtmlTree tdFirst = new HtmlTree(HtmlTag.TD);
                 tdFirst.addStyle(HtmlStyle.colFirst);
                 writer.addSummaryType(this, pgmdoc, tdFirst);
                 tr.addContent(tdFirst);
                 HtmlTree tdLast = new HtmlTree(HtmlTag.TD);
                 tdLast.addStyle(HtmlStyle.colLast);
                 if (cd != null && !(pgmdoc instanceof ConstructorDoc)
                         && !(pgmdoc instanceof ClassDoc)) {
                     HtmlTree name = new HtmlTree(HtmlTag.SPAN);
                     name.addStyle(HtmlStyle.typeNameLabel);
                     name.addContent(cd.name() + ".");
                     tdLast.addContent(name);
                 }
                 addSummaryLink(pgmdoc instanceof ClassDoc ?
                     LinkInfoImpl.Kind.CLASS_USE : LinkInfoImpl.Kind.MEMBER,
                     cd, pgmdoc, tdLast);
                 writer.addSummaryLinkComment(this, pgmdoc, tdLast);
                 tr.addContent(tdLast);
                 tbody.addContent(tr);
             }
             table.addContent(tbody);
             contentTree.addContent(table);
         }
     }
     /**
      * Add the navigation detail link.
      *
      * @param members the members to be linked
      * @param liNav the content tree to which the navigation detail link will be added
      */
     protected void addNavDetailLink(List<?> members, Content liNav) {
         addNavDetailLink(members.size() > 0 ? true : false, liNav);
     }
     /**
      * Add the navigation summary link.
      *
      * @param members members to be linked
      * @param visibleMemberMap the visible inherited members map
      * @param liNav the content tree to which the navigation summary link will be added
      */
     protected void addNavSummaryLink(List<?> members,
             VisibleMemberMap visibleMemberMap, Content liNav) {
         if (members.size() > 0) {
             liNav.addContent(getNavSummaryLink(null, true));
             return;
         }
         ClassDoc icd = classdoc.superclass();
         while (icd != null) {
             List<?> inhmembers = visibleMemberMap.getMembersFor(icd);
             if (inhmembers.size() > 0) {
                 liNav.addContent(getNavSummaryLink(icd, true));
                 return;
             }
             icd = icd.superclass();
         }
         liNav.addContent(getNavSummaryLink(null, false));
     }
     protected void serialWarning(SourcePosition pos, String key, String a1, String a2) {
         if (configuration.serialwarn) {
             configuration.getDocletSpecificMsg().warning(pos, key, a1, a2);
         }
     }
     public ProgramElementDoc[] eligibleMembers(ProgramElementDoc[] members) {
         return nodepr? Util.excludeDeprecatedMembers(members): members;
     }
     /**
      * Add the member summary for the given class.
      *
      * @param classDoc the class that is being documented
      * @param member the member being documented
      * @param firstSentenceTags the first sentence tags to be added to the summary
      * @param tableContents the list of contents to which the documentation will be added
      * @param counter the counter for determining id and style for the table row
      */
     public void addMemberSummary(ClassDoc classDoc, ProgramElementDoc member,
             Tag[] firstSentenceTags, List<Content> tableContents, int counter) {
         HtmlTree tdSummaryType = new HtmlTree(HtmlTag.TD);
         tdSummaryType.addStyle(HtmlStyle.colFirst);
         writer.addSummaryType(this, member, tdSummaryType);
         HtmlTree tdSummary = new HtmlTree(HtmlTag.TD);
         setSummaryColumnStyle(tdSummary);
         addSummaryLink(classDoc, member, tdSummary);
         writer.addSummaryLinkComment(this, member, firstSentenceTags, tdSummary);
         HtmlTree tr = HtmlTree.TR(tdSummaryType);
         tr.addContent(tdSummary);
         if (member instanceof MethodDoc && !member.isAnnotationTypeElement()) {
             int methodType = (member.isStatic()) ? MethodTypes.STATIC.value() :
                     MethodTypes.INSTANCE.value();
             if (member.containingClass().isInterface()) {
                 methodType = (((MethodDoc) member).isAbstract())
                         ? methodType | MethodTypes.ABSTRACT.value()
                         : methodType | MethodTypes.DEFAULT.value();
             } else {
                 methodType = (((MethodDoc) member).isAbstract())
                         ? methodType | MethodTypes.ABSTRACT.value()
                         : methodType | MethodTypes.CONCRETE.value();
             }
             if (Util.isDeprecated(member) || Util.isDeprecated(classdoc)) {
                 methodType = methodType | MethodTypes.DEPRECATED.value();
             }
             methodTypesOr = methodTypesOr | methodType;
             String tableId = "i" + counter;
             typeMap.put(tableId, methodType);
             tr.addAttr(HtmlAttr.ID, tableId);
         }
         if (counter%2 == 0)
             tr.addStyle(HtmlStyle.altColor);
         else
             tr.addStyle(HtmlStyle.rowColor);
         tableContents.add(tr);
     }
     /**
      * Generate the method types set and return true if the method summary table
      * needs to show tabs.
      *
      * @return true if the table should show tabs
      */
     public boolean showTabs() {
         int value;
         for (MethodTypes type : EnumSet.allOf(MethodTypes.class)) {
             value = type.value();
             if ((value & methodTypesOr) == value) {
                 methodTypes.add(type);
             }
         }
         boolean showTabs = methodTypes.size() > 1;
         if (showTabs) {
             methodTypes.add(MethodTypes.ALL);
         }
         return showTabs;
     }
     /**
      * Set the style for the summary column.
      *
      * @param tdTree the column for which the style will be set
      */
     public void setSummaryColumnStyle(HtmlTree tdTree) {
         tdTree.addStyle(HtmlStyle.colLast);
     }
     /**
      * Add inherited member summary for the given class and member.
      *
      * @param classDoc the class the inherited member belongs to
      * @param nestedClass the inherited member that is summarized
      * @param isFirst true if this is the first member in the list
      * @param isLast true if this is the last member in the list
      * @param linksTree the content tree to which the summary will be added
      */
     public void addInheritedMemberSummary(ClassDoc classDoc,
             ProgramElementDoc nestedClass, boolean isFirst, boolean isLast,
             Content linksTree) {
         writer.addInheritedMemberSummary(this, classDoc, nestedClass, isFirst,
                 linksTree);
     }
     /**
      * Get the inherited summary header for the given class.
      *
      * @param classDoc the class the inherited member belongs to
      * @return a content tree for the inherited summary header
      */
     public Content getInheritedSummaryHeader(ClassDoc classDoc) {
         Content inheritedTree = writer.getMemberTreeHeader();
         writer.addInheritedSummaryHeader(this, classDoc, inheritedTree);
         return inheritedTree;
     }
     /**
      * Get the inherited summary links tree.
      *
      * @return a content tree for the inherited summary links
      */
     public Content getInheritedSummaryLinksTree() {
         return new HtmlTree(HtmlTag.CODE);
     }
     /**
      * Get the summary table tree for the given class.
      *
      * @param classDoc the class for which the summary table is generated
      * @param tableContents list of contents to be displayed in the summary table
      * @return a content tree for the summary table
      */
     public Content getSummaryTableTree(ClassDoc classDoc, List<Content> tableContents) {
         return writer.getSummaryTableTree(this, classDoc, tableContents, showTabs());
     }
     /**
      * Get the member tree to be documented.
      *
      * @param memberTree the content tree of member to be documented
      * @return a content tree that will be added to the class documentation
      */
     public Content getMemberTree(Content memberTree) {
         return writer.getMemberTree(memberTree);
     }
     /**
      * Get the member tree to be documented.
      *
      * @param memberTree the content tree of member to be documented
      * @param isLastContent true if the content to be added is the last content
      * @return a content tree that will be added to the class documentation
      */
     public Content getMemberTree(Content memberTree, boolean isLastContent) {
         if (isLastContent)
             return HtmlTree.UL(HtmlStyle.blockListLast, memberTree);
         else
             return HtmlTree.UL(HtmlStyle.blockList, memberTree);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/doclets/formats/html/AbstractMemberWriter.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/AbstractMemberWriter.java