Java Utililty Methods XML JAXB Context

try {
    return JAXBContext.newInstance(classes);
} catch (JAXBException e) {
    throw new RuntimeException(e.getMessage(), e);

JAXBContext retObj = null;
String key = "";
for (Class classType : classTypes) {
    if (!"".equals(key)) {
        key += ";";
    key += classType.getName();
retObj = jaxbContextMap.get(key);
if (retObj == null) {
    retObj = JAXBContext.newInstance(classTypes);
    jaxbContextMap.put(key, retObj);
return retObj;

String clazzName = clazz.getName();
JAXBContext jx = jaxbContextHash.get(clazzName);
if (jx == null) {
    jx = JAXBContext.newInstance(clazz);
    jaxbContextHash.put(clazzName, jx);
return jx;

Map<String, JAXBContext> cache = threadLocal.get();
JAXBContext jc = cache.get(clazz.getName());
if (jc == null) {
    jc = JAXBContext.newInstance(clazz);
    cache.put(clazz.getName(), jc);
return jc;

JAXBContext jaxbContext = jaxbMap.get(clazz);
if (jaxbContext == null) {
    try {
        jaxbContext = JAXBContext.newInstance(clazz);
        jaxbMap.putIfAbsent(clazz, jaxbContext);
    } catch (JAXBException ex) {
        throw new RuntimeException("Could not instantiate JAXBContext.", ex);
return jaxbContext;

if (CTX_CACHE.containsKey(clazz)) {
    return CTX_CACHE.get(clazz);
} else {
    JAXBContext ctx = JAXBContext.newInstance(clazz);
    CTX_CACHE.put(clazz, ctx);
    return ctx;

JAXBContext jaxbContext;
if (jaxbContentCache.containsKey(objclass.getName())) {
    jaxbContext = jaxbContentCache.get(objclass.getName());
} else {
    jaxbContext = JAXBContext.newInstance(objclass);
    jaxbContentCache.put(objclass.getName(), jaxbContext);
return jaxbContext;
...

JAXBContext jaxbContext = JAXB_CONTEXTS.get(valueType.getPackage());
if (jaxbContext == null) {
    jaxbContext = JAXB_CONTEXTS.get(valueType);
if (jaxbContext == null) {
    try {
        jaxbContext = JAXBContext.newInstance(valueType.getPackage().getName());
    } catch (JAXBException e) {
...

JAXBContext ctx = (JAXBContext) JAXB_CONTEXT_MAP.get(contextPath);
if (ctx == null) {
    ctx = JAXBContext.newInstance(contextPath);
    JAXB_CONTEXT_MAP.put(contextPath, ctx);
return ctx;

if (contextCache.containsKey(contextPath)) {
    return contextCache.get(contextPath);
} else {
    final JAXBContext context = JAXBContext.newInstance(contextPath);
    contextCache.put(contextPath, context);
    return context;