接口:
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package com.test;
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public interface Fruit {
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}
一个实现类:
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package com.test;
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public class Apple implements Fruit {
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}
基本测试类:
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package com.test;
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import java.util.ArrayList;
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import java.util.List;
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public class TestName {
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public static void main(String[] args) {
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Fruit apple=new Apple();
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System.out.println(apple.getClass().getCanonicalName());
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System.out.println(apple.getClass().getSimpleName());
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System.out.println(apple.getClass().getName());
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Apple[] arrApple=new Apple[]{};
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System.out.println(arrApple.getClass().getCanonicalName());
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System.out.println(arrApple.getClass().getSimpleName());
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System.out.println(arrApple.getClass().getName());
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System.out.println(String.class.getCanonicalName());
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System.out.println(String.class.getSimpleName());
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System.out.println(String.class.getName());
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System.out.println(int.class.getCanonicalName());
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System.out.println(int.class.getSimpleName());
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System.out.println(int.class.getName());
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Apple a1=new Apple();
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Apple a2=new Apple();
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List<Apple> appleList=new ArrayList<Apple>();
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appleList.add(a1);
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appleList.add(a2);
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System.out.println(appleList.getClass().getCanonicalName());
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System.out.println(appleList.getClass().getSimpleName());
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System.out.println(appleList.getClass().getName());
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}
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}
实际应用: hql的泛型查询
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public <T> List<T> getRecords(Class<T> c,Date startDate,Date endDate){
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StringBuilder hql = new StringBuilder("select t from ");
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hql.append(c.getCanonicalName());
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hql.append(" t where t.statTime>=:startTime and t.statTime<:endTime ");
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Query query = sessionFactory.getCurrentSession().createQuery(hql.toString());
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query.setParameter("startTime", startDate);
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query.setParameter("endTime", endDate);
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return query.list();
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}
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}
java getCanonicalName getSimpleName和getName的区别和用法
原文：http://blog.csdn.net/love_xsq/article/details/43672465
