Upgrade to Eclipse 2023-12

Closes gh-401

Author: philwebb

pom.xml

@@ -32,7 +32,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
 		<eclipse.jdk8.repository>https://download.eclipse.org/releases/2021-03/202103171000/</eclipse.jdk8.repository>
-		<eclipse.jdk17.repository>https://download.eclipse.org/releases/2022-12/202212071000/</eclipse.jdk17.repository>
+		<eclipse.jdk17.repository>https://download.eclipse.org/releases/2023-12/202312061001/</eclipse.jdk17.repository>
 		<eclipse.checkstyle.repository>https://checkstyle.org/eclipse-cs-update-site/</eclipse.checkstyle.repository>
 		<tycho.disableP2Mirrors>true</tycho.disableP2Mirrors>
 		<ant.version>1.8.1</ant.version>

spring-javaformat/spring-javaformat-formatter-eclipse-rewriter/src/main/java/io/spring/javaformat/formatter/eclipse/rewrite/EclipseRewriter.java

@@ -116,15 +116,15 @@ private static class DefaultCodeFormatterManipulator extends ClassVisitor {
 
 		@Override
 		public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
-			if (access == Opcodes.ACC_PRIVATE && UPDATED_FIELDS.contains(name)) {
+			if ((access & Opcodes.ACC_PRIVATE) != 0 && UPDATED_FIELDS.contains(name)) {
 				access = Opcodes.ACC_PROTECTED;
 			}
 			return super.visitField(access, name, desc, signature, value);
 		}
 
 		@Override
 		public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-			if (access == Opcodes.ACC_PRIVATE && UPDATED_METHODS.contains(name)) {
+			if ((access & Opcodes.ACC_PRIVATE) != 0 && UPDATED_METHODS.contains(name)) {
 				access = Opcodes.ACC_PROTECTED;
 			}
 			return new DefaultCodeFormatterMethodManipulator(