#vulnerable code 
                             @ManagedOperation
	public boolean rebind(String name) {
		if (!this.beans.getBeanNames().contains(name)) {
			return false;
		}
		if (this.applicationContext != null) {
			try {
				Object bean = this.applicationContext.getBean(name);
				if (AopUtils.isAopProxy(bean)) {
					bean = getTargetObject(bean);
				}
				// TODO: determine a more general approach to fix this.
				// see https://github.com/spring-cloud/spring-cloud-commons/issues/318
				if (bean.getClass().getName().equals("com.zaxxer.hikari.HikariDataSource")) {
					return false; //ignore
				}
				this.applicationContext.getAutowireCapableBeanFactory().destroyBean(bean);
				this.applicationContext.getAutowireCapableBeanFactory()
						.initializeBean(bean, name);
				return true;
			}
			catch (RuntimeException e) {
				this.errors.put(name, e);
				throw e;
			}
		}
		return false;
	} 
                            #location 14 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             @ManagedOperation
	public boolean rebind(String name) {
		if (!this.beans.getBeanNames().contains(name)) {
			return false;
		}
		if (this.applicationContext != null) {
			try {
				Object bean = this.applicationContext.getBean(name);
				if (AopUtils.isAopProxy(bean)) {
					bean = getTargetObject(bean);
				}
				this.applicationContext.getAutowireCapableBeanFactory().destroyBean(bean);
				this.applicationContext.getAutowireCapableBeanFactory()
						.initializeBean(bean, name);
				return true;
			}
			catch (RuntimeException e) {
				this.errors.put(name, e);
				throw e;
			}
			catch (Exception e) {
				this.errors.put(name, e);
				throw new IllegalStateException("Cannot rebind to " + name, e);
			}
		}
		return false;
	}