diff --git a/0001-Always-generate-bytecode-debuginfo.patch b/0001-Always-generate-bytecode-debuginfo.patch
new file mode 100644
index 0000000..6bc2c92
--- /dev/null
+++ b/0001-Always-generate-bytecode-debuginfo.patch
@@ -0,0 +1,47 @@
+From e7ff390ef777bd818ccc6e6f8f3a56f36020abfe Mon Sep 17 00:00:00 2001
+From: Mat Booth <mat.booth@gmail.com>
+Date: Wed, 15 Sep 2021 10:21:53 +0100
+Subject: [PATCH 1/2] Always generate bytecode debuginfo
+
+When ecj is used to build RPMs
+---
+ .../jdt/internal/compiler/batch/Main.java     | 23 +++++++++++++++++++
+ 1 file changed, 23 insertions(+)
+
+diff --git a/org/eclipse/jdt/internal/compiler/batch/Main.java b/org/eclipse/jdt/internal/compiler/batch/Main.java
+index f77372d..73a0d24 100644
+--- a/org/eclipse/jdt/internal/compiler/batch/Main.java
++++ b/org/eclipse/jdt/internal/compiler/batch/Main.java
+@@ -3109,6 +3109,29 @@ public void configure(String[] argv) {
+ 		this.options.put(CompilerOptions.OPTION_Process_Annotations, CompilerOptions.ENABLED);
+ 	}
+ 
++	{
++		// If we're building an RPM, force full debugging info to
++		// be generated, no matter what options have been passed
++		// by Ant.  This is something of a kludge, but it is far
++		// better than the alternative, which is having class
++		// files with debug info mysteriously missing.
++
++		String RpmPackageName = System.getenv("RPM_PACKAGE_NAME");
++		String RpmArch = System.getenv("RPM_ARCH");
++		String RpmBuildRoot = System.getenv("RPM_BUILD_ROOT");
++		if (RpmPackageName != null && RpmArch != null && RpmBuildRoot != null) {
++			this.options.put(
++					CompilerOptions.OPTION_LocalVariableAttribute,
++					CompilerOptions.GENERATE);
++			this.options.put(
++					CompilerOptions.OPTION_LineNumberAttribute,
++					CompilerOptions.GENERATE);
++			this.options.put(
++					CompilerOptions.OPTION_SourceFileAttribute,
++					CompilerOptions.GENERATE);
++		}
++	}
++
+ 	this.logger.logCommandLineArguments(newCommandLineArgs);
+ 	this.logger.logOptions(this.options);
+ 
+-- 
+2.31.1
+
diff --git a/ecj-3.29.0.pom b/ecj-3.29.0.pom
new file mode 100644
index 0000000..537fbeb
--- /dev/null
+++ b/ecj-3.29.0.pom
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Copyright (c) 2016, 2018 GK Software SE and others.
+
+  This program and the accompanying materials
+  are made available under the terms of the Eclipse Public License 2.0
+  which accompanies this distribution, and is available at
+  https://www.eclipse.org/legal/epl-2.0/
+
+  SPDX-License-Identifier: EPL-2.0
+
+  Contributors:
+      Stephan Herrmann - initial implementation
+-->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd" xsi:noNamespaceSchemaLocation="http://maven.apache.org/POM/4.0.0">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.eclipse.jdt</groupId>
+  <artifactId>ecj</artifactId>
+  <version>3.29.0</version>
+  <description>Eclipse Compiler for Java(TM)</description>
+  <name>Eclipse Compiler for Java(TM)</name>
+  <url>http://www.eclipse.org/jdt</url>
+  <licenses>
+    <license>
+      <name>Eclipse Public License - v 2.0</name>
+      <url>https://www.eclipse.org/legal/epl-2.0/</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+  <organization>
+    <name>Eclipse Foundation</name>
+    <url>http://www.eclipse.org/</url>
+  </organization>
+  <issueManagement>
+    <system>Bugzilla</system>
+    <url>https://bugs.eclipse.org/</url>
+  </issueManagement>
+  <scm>
+    <connection>scm:git:https://git.eclipse.org/r/jdt/eclipse.jdt.core.git</connection>
+    <url>https://git.eclipse.org/c/jdt/eclipse.jdt.core.git</url>
+  </scm>
+  <developers>
+    <developer>
+      <url>https://projects.eclipse.org/projects/eclipse.jdt/who</url>
+    </developer>
+  </developers>
+</project>
diff --git a/ecj-4.9.pom b/ecj-4.9.pom
deleted file mode 100644
index 0155a2d..0000000
--- a/ecj-4.9.pom
+++ /dev/null
@@ -1,64 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-	<!-- 
-           Originally downloaded here:
-           http://download.eclipse.org/eclipse/downloads/drops4/R-4.7.1-201709061700/#JDTCORE
-	-->
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>org.eclipse.jdt.core.compiler</groupId>
-	<artifactId>ecj</artifactId>
-	<version>4.9</version>
-	<packaging>jar</packaging>
-	<name>Eclipse ECJ</name>
-	<description>Eclipse JDT Core Batch Compiler</description>
-	<url>http://www.eclipse.org/jdt/</url>
-	<properties>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<maven.compiler.source>1.8</maven.compiler.source>
-		<maven.compiler.target>1.8</maven.compiler.target>
-	</properties>
-	<licenses>
-		<license>
-			<name>Eclipse Public License v1.0</name>
-			<url>http://www.eclipse.org/org/documents/epl-v10.php</url>
-			<distribution>repo</distribution>
-		</license>
-	</licenses>
-	<scm>
-		<url>http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.jdt.core/</url>
-		<connection>:pserver:anonymous@dev.eclipse.org:/cvsroot/eclipse</connection>
-	</scm>
-	<developers>
-		<!-- I didn't develop ECJ, but the Central Sync Requirements mandate a developer in the POM:
-			https://docs.sonatype.org/display/Repository/Central+Sync+Requirements
-		-->
-		<developer>
-			<name>Ralph Schaer</name>
-			<email>ralphschaer@gmail.com</email>
-		</developer>
-	</developers>
-	
-	<dependencies>
-		<dependency>
-			<groupId>org.apache.ant</groupId>
-			<artifactId>ant</artifactId>
-			<version>1.9.4</version>
-			<optional>true</optional>
-		</dependency>
-	</dependencies>	
-	
-	<build>
-      <plugins>
-        <plugin>
-          <groupId>org.apache.maven.plugins</groupId>
-          <artifactId>maven-javadoc-plugin</artifactId>
-		  <version>2.10.3</version>
-          <configuration>
-            <additionalparam>-Xdoclint:none</additionalparam>
-          </configuration>
-        </plugin>
-      </plugins>	
-	</build>
-	
-</project>
diff --git a/ecj.sh.in b/ecj.sh.in
deleted file mode 100644
index d8a40e9..0000000
--- a/ecj.sh.in
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-CLASSPATH=$(build-classpath ecj):${CLASSPATH=.} \
-java org.eclipse.jdt.internal.compiler.batch.Main "$@"
diff --git a/ecj.spec b/ecj.spec
index 4fde71d..e817455 100644
--- a/ecj.spec
+++ b/ecj.spec
@@ -1,22 +1,23 @@
 Epoch:          1
 
+%global bundle_ver 3.29.0
+
 Name:           ecj
-Version:        4.9
-Release:        3
+Version:        4.23
+Release:        1
 Summary:        the Eclipse Compiler for Java
 License:        EPL-2.0
 URL:            http://www.eclipse.org
 
-Source0:        http://download.eclipse.org/eclipse/downloads/drops4/R-4.9-201809060745/ecjsrc-4.9.jar
-Source1:        ecj.sh.in
-Source3:        https://repo1.maven.org/maven2/org/eclipse/jdt/core/compiler/ecj/%{version}/ecj-%{version}.pom
-Source4:        MANIFEST.MF
-Source5:        java10api.jar
+Source0:        https://download.eclipse.org/eclipse/downloads/drops4/R-%{version}-202203080310/ecjsrc-%{version}.jar
+Source1:        https://repo1.maven.org/maven2/org/eclipse/jdt/ecj/%{bundle_ver}/ecj-%{bundle_ver}.pom
+Source2:        MANIFEST.MF
 
-Patch0:         javaAPI.patch
+Patch0:         0001-Always-generate-bytecode-debuginfo.patch
 
 BuildArch:      noarch
 BuildRequires:  ant javapackages-local
+BuildRequires:  java-11-openjdk-devel
 
 %description
 ECJ is the the Eclipse Compiler for Java.  It is also known as the JDT Core batch compiler.
@@ -26,31 +27,24 @@ ECJ is the the Eclipse Compiler for Java.  It is also known as the JDT Core batc
 %prep
 %autosetup -c -n %{name}-%{version} -p1
 
-sed -i -e 's|debuglevel=\"lines,source\"|debug=\"yes\"|g' build.xml
 sed -i -e "s/Xlint:none/Xlint:none -encoding cp1252/g" build.xml
 rm -f org/eclipse/jdt/core/JDTCompilerAdapter.java
-cp %{SOURCE3} pom.xml
+cp %{SOURCE1} pom.xml
 mkdir -p scripts/binary/META-INF/
-cp %{SOURCE4} scripts/binary/META-INF/MANIFEST.MF
+cp %{SOURCE2} scripts/binary/META-INF/MANIFEST.MF
 
-%pom_remove_dep org.apache.ant:ant
-
-%mvn_file :ecj ecj jdtcore
-%mvn_alias org.eclipse.jdt.core.compiler:ecj org.eclipse.jdt:core org.eclipse.jdt:ecj \
+%mvn_alias org.eclipse.jdt:ecj org.eclipse.jdt:core org.eclipse.jdt.core.compiler:ecj \
   org.eclipse.tycho:org.eclipse.jdt.core org.eclipse.tycho:org.eclipse.jdt.compiler.apt
-%mvn_artifact "org.eclipse:java10api:jar:10" %{SOURCE5}
-%mvn_alias "org.eclipse:java10api:jar:10" "org.eclipse:java9api:jar:9"
 
 %build
-ant -Djavaapi=%{SOURCE5}
+export JAVA_HOME=/usr/lib/jvm/java-11
+ant
 
 %install
 %mvn_artifact pom.xml ecj.jar
 %mvn_install
 
-sed -i 's/[0-9a-f]\{8\}-[0-9a-f]\{4\}-[0-9a-f]\{4\}-[0-9a-f]\{4\}-[0-9a-f]\{12\}/f2f42549-cfab-4d71-be48-5e9f9a41e5f5/g' $(find %{_buildrootdir} -name ecj.xml)
-
-install -p -D -m0755 %{SOURCE1} %{buildroot}%{_bindir}/ecj
+%jpackage_script org.eclipse.jdt.internal.compiler.batch.Main '' '' ecj ecj true
 mkdir -p %{buildroot}%{_mandir}/man1
 install -m 644 -p ecj.1 %{buildroot}%{_mandir}/man1/ecj.1
 
@@ -64,5 +58,8 @@ install -m 644 -p ecj.1 %{buildroot}%{_mandir}/man1/ecj.1
 %{_mandir}/man1/ecj*
 
 %changelog
+* Wed May 18 2022 chenchen <chen_aka_jan@163.com> -  1:4.23-1
+- update to 4.23
+
 * Wed Dec 4 2019 openEuler Buildteam <buildteam@openeuler.org> - 1:4.9-3
 - Package init
diff --git a/ecjsrc-4.23.jar b/ecjsrc-4.23.jar
new file mode 100644
index 0000000..9b0a8be
Binary files /dev/null and b/ecjsrc-4.23.jar differ
diff --git a/ecjsrc-4.9.jar b/ecjsrc-4.9.jar
deleted file mode 100644
index a48d6a2..0000000
Binary files a/ecjsrc-4.9.jar and /dev/null differ
diff --git a/java10api.jar b/java10api.jar
deleted file mode 100644
index 464b691..0000000
Binary files a/java10api.jar and /dev/null differ
diff --git a/javaAPI.patch b/javaAPI.patch
deleted file mode 100644
index 71de2e4..0000000
--- a/javaAPI.patch
+++ /dev/null
@@ -1,26 +0,0 @@
---- a/build.xml.orig	2018-03-20 15:15:57.063810672 +0000
-+++ b/build.xml	2018-03-20 15:16:26.018700633 +0000
-@@ -15,16 +15,20 @@
- 	<property name="output" value="bin" />
- 	<property name="jar_file" value="ecj.jar" />
- 
-+	<path id="build.path">
-+		<pathelement path="${javaapi}"/>
-+		<pathelement path="/usr/lib/jvm/java-1.8.0/jre/lib/rt.jar"/>
-+	</path>
- 	<target name="build">
- 		<delete file="${basedir}/${jar_file}" failonerror="no" />
- 		<delete dir="${output}" failonerror="no" />
- 		<mkdir dir="${output}" />
- 
--		<javac srcdir="${basedir}" destdir="${output}"
--					debuglevel="lines,source"
-+		<javac srcdir="${basedir}" destdir="${output}" bootclasspathref="build.path"
-+					debug="yes"
- 					source="1.8"
- 					target="1.8">
--			<compilerarg line="-Xlint:none"/>
-+			<compilerarg line="-Xlint:none -encoding cp1252 -encoding cp1252"/>
- 		</javac>
- 
- 		<delete file="${basedir}/META-INF/MANIFEST.MF" failonerror="false"/>