关于一次调用,多次使用

最近在做调用接口的JAVA代码,其中用到了className object=new className();
但每次调用时都会生产一次对象,效率低.
可以用Spring来解决:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

	<bean id="beanName" class="...">
	</bean>
</beans>

在JAVA代码中:

className oProxy = (className)BeanUtil.getInstance().getBean(context, "beanName", false);

在BeanUtil.java中:

    public static synchronized BeanUtil getInstance()
    {
        if(instance == null)
            instance = new BeanUtil();
        return instance;
    }