diff --git a/icu4j/build.xml b/icu4j/build.xml
index 839484f1dba..2b68899bbc9 100644
--- a/icu4j/build.xml
+++ b/icu4j/build.xml
@@ -149,8 +149,6 @@
     <target name="main" depends="info, core, collate, charset, currdata, langdata, regiondata, translit, localespi" description="Build ICU4J runtime library classes"/>
     <target name="tests" depends="info, core-tests, charset-tests, collate-tests, packaging-tests, translit-tests, localespi-tests" description="Build ICU4J test classes"/>
 
-    <target name="findbugs" depends="charset-findbugs, collate-findbugs, core-findbugs, currdata-findbugs, langdata-findbugs, localespi-findbugs, regiondata-findbugs, translit-findbugs" description="Run FindBugs on all projects." />
-
     <target name="secure" depends="icu4jJar" description="(Deprecated)Build ICU4J API and test classes for running the ICU4J test suite with Java security manager enabled"/>
     
     <!-- Check to see if JVM_OPTIONS enviroment variable is set. This can be use to set the heap size. -->
@@ -601,36 +599,34 @@
 
     <!-- findbugs targets -->
 
-    <target name="core-findbugs" description="Find bugs in core">
-        <ant dir="${icu4j.core.dir}" inheritAll="false" target="findbugs" />
-    </target>
+    <target name="findbugs" description="Run FindBugs on all library sub projects.">
+        <property name="findbugs.out.dir" value="${out.dir}/findbugs"/>
+        <mkdir dir="${findbugs.out.dir}"/>
 
-    <target name="collate-findbugs" description="Find bugs in collate">
-        <ant dir="${icu4j.collate.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.core.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.core.dir}/${out.dir}/fb-core.html" todir="${findbugs.out.dir}"/>
 
-    <target name="charset-findbugs" description="Find bugs in charset">
-        <ant dir="${icu4j.charset.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.collate.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.collate.dir}/${out.dir}/fb-collate.html" todir="${findbugs.out.dir}"/>
 
-    <target name="currdata-findbugs" description="Find bugs in currdata">
-        <ant dir="${icu4j.currdata.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.currdata.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.currdata.dir}/${out.dir}/fb-currdata.html" todir="${findbugs.out.dir}"/>
 
-    <target name="langdata-findbugs" description="Find bugs in langdata">
-        <ant dir="${icu4j.langdata.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.langdata.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.langdata.dir}/${out.dir}/fb-langdata.html" todir="${findbugs.out.dir}"/>
 
-    <target name="localespi-findbugs" description="Find bugs in localespi">
-        <ant dir="${icu4j.localespi.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.regiondata.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.regiondata.dir}/${out.dir}/fb-regiondata.html" todir="${findbugs.out.dir}"/>
 
-    <target name="regiondata-findbugs" description="Find bugs in regiondata">
-        <ant dir="${icu4j.regiondata.dir}" inheritAll="false" target="findbugs" />
-    </target>
+        <ant dir="${icu4j.translit.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.translit.dir}/${out.dir}/fb-translit.html" todir="${findbugs.out.dir}"/>
 
-    <target name="translit-findbugs" description="Find bugs in translit">
-        <ant dir="${icu4j.translit.dir}" inheritAll="false" target="findbugs" />
+
+        <ant dir="${icu4j.charset.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.charset.dir}/${out.dir}/fb-charset.html" todir="${findbugs.out.dir}"/>
+
+        <ant dir="${icu4j.localespi.dir}" inheritAll="false" target="findbugs"/>
+        <copy file="${icu4j.localespi.dir}/${out.dir}/fb-localespi.html" todir="${findbugs.out.dir}"/>
     </target>
 
     <!-- compile targets -->
diff --git a/icu4j/main/shared/build/common-targets.xml b/icu4j/main/shared/build/common-targets.xml
index f83e03d2f72..6d0d7d1662c 100644
--- a/icu4j/main/shared/build/common-targets.xml
+++ b/icu4j/main/shared/build/common-targets.xml
@@ -1,6 +1,6 @@
 <!--
 *******************************************************************************
-* Copyright (C) 2009-2012, International Business Machines Corporation and    *
+* Copyright (C) 2009-2013, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 -->
@@ -104,17 +104,14 @@
         <echo message="${full.locale.names}" file="${res.dir}/fullLocaleNames.lst"/>
     </target>
 
-    <!-- fail if findbugs.home is not given or the findbugs task is
-         unavailable -->
-    <target name="_findbugs_check">
-        <fail message="findbugs.home must be defined.">
-            <condition>
-                <not>
-                    <available file="${findbugs.home}" type="dir" />
-                </not>
-            </condition>
-        </fail>
-        <fail message="FindBugs task not found">
+    <!-- FindBugs targets -->
+    <target name="_findbugs_init">
+        <property name="findbugs.home" value="${env.FINDBUGS_HOME}"/>
+        <echo message="----------------------------------------------------"/>
+        <echo message="findbugs.home:  ${findbugs.home}"/>
+        <echo message="----------------------------------------------------"/>
+
+        <fail message="FindBugs task not found. Set environment variable FINDBUGS_HOME properly.">
             <condition>
                 <not>
                     <or>
@@ -124,29 +121,42 @@
                 </not>
             </condition>
         </fail>
-    </target>
-
-    <!-- if findbugs-ant.jar is already on the path, just define the task -->
-    <target name="_findbugs_task_available" depends="_findbugs_check" if="_findbugs.task.available">
-        <taskdef name="findbugs" classname="edu.umd.cs.findbugs.anttask.FindBugsTask" />
-    </target>
-
-    <!-- otherwise, specify findbugs-ant.jar on the path -->
-    <target name="_findbugs_task_unavailable" depends="_findbugs_check" unless="_findbugs.task.available">
         <taskdef name="findbugs" classname="edu.umd.cs.findbugs.anttask.FindBugsTask"
-            classpath="${findbugs.home}/lib/findbugs-ant.jar" />
+            classpath="${findbugs.home}/lib/findbugs-ant.jar"/>
+
+        <property name="aux.classpath" value="${toString:javac.classpathref}"/>
+        <condition property="empty.aux.classpath">
+            <length string="${aux.classpath}" when="eq" length="0"/>
+        </condition>
     </target>
 
-    <target name="_findbugs_task" depends="_findbugs_task_available, _findbugs_task_unavailable" />
-
-    <target name="@findbugs" depends="_findbugs_task, @build-all">
-        <findbugs home="${findbugs.home}" output="html" outputFile="${out.dir}/fb-${ant.project.name}.html">
-            <sourcePath path="${src.dir}" />
-            <class location="${jar.dir}/${jar.name}" />
-            <auxClasspath path="${toString:javac.classpathref}" />
+    <target name="_findbugs_empty_aux_classpath" if="empty.aux.classpath">
+        <findbugs
+            home="${findbugs.home}"
+            output="html"
+            outputFile="${out.dir}/fb-${ant.project.name}.html"
+            excludeFilter="findbugs-exclude.xml">
+ 
+            <sourcePath path="${src.dir}"/>
+            <class location="${jar.dir}/${jar.name}"/>
         </findbugs>
     </target>
 
+    <target name="_findbugs_non_empty_aux_classpath" unless="empty.aux.classpath">
+        <findbugs
+            home="${findbugs.home}"
+            output="html"
+            outputFile="${out.dir}/fb-${ant.project.name}.html"
+            excludeFilter="findbugs-exclude.xml">
+ 
+            <sourcePath path="${src.dir}"/>
+            <class location="${jar.dir}/${jar.name}"/>
+            <auxClasspath path="${aux.classpath}"/>
+        </findbugs>
+    </target>
+
+    <target name="@findbugs" depends="_findbugs_init, @build-all, _findbugs_empty_aux_classpath, _findbugs_non_empty_aux_classpath"/>
+
     <!-- Dependencies -->
 
     <!-- collate -->
diff --git a/icu4j/main/shared/build/common.properties b/icu4j/main/shared/build/common.properties
index 544a9676e25..28e6d7c97a7 100644
--- a/icu4j/main/shared/build/common.properties
+++ b/icu4j/main/shared/build/common.properties
@@ -62,6 +62,3 @@ icu4j.samples.jar = ${icu4j.samples.dir}/${jar.dir}/icu4j-samples.jar
 
 # Misc
 icu4j.data.path = com/ibm/icu/impl/data/icudt${icu4j.data.version}b
-
-# Findbugs
-findbugs.home =