class GenericsList<T> {
private List<T> list;
public GenericsList(List<T> list) {
this.list = list;
}
public void getElementClass() {
//此处需要T的类
}
}public class GenericsListDemo {
public static void main(String args[]) {
List<String> list = new ArrayList<String>();
GenericsList<String> gList = new GenericsList<String>(list);
gList.getElementClass();
}
}
private List<T> list;
public GenericsList(List<T> list) {
this.list = list;
}
public void getElementClass() {
//此处需要T的类
}
}public class GenericsListDemo {
public static void main(String args[]) {
List<String> list = new ArrayList<String>();
GenericsList<String> gList = new GenericsList<String>(list);
gList.getElementClass();
}
}
for(T t:list)
{
^^^^^^^^
}
如用于:spring.getHibernateTemplate().loadAll(T.class);
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;class GenericsList<T> {
private List<T> list; public GenericsList(List<T> list) {
this.list = list;
getElementClass();
} public void getElementClass() {
// 此处需要T的类 (return T.class;)
Type type = list.getClass().getGenericSuperclass();
System.out.println(type);
ParameterizedType pType = (ParameterizedType)type;
System.out.println(pType);
Type[] aType = pType.getActualTypeArguments();
System.out.println(aType[0]);
System.out.println(aType[0].getClass());
}
public List<T> getList() {
return list;
}
}class Dog {
}class Cat {
}public class GenericsListDemo {
public static void main(String args[]) { List<Dog> list1 = new ArrayList<Dog>(); GenericsList<Dog> gList1 = new GenericsList<Dog>(list1);
gList1.getList();
// List<Cat> list2 = new ArrayList<Cat>();
// GenericsList<Cat> gList2 = new GenericsList<Cat>(list2);
// gList2.getList();
}
}
if(list.get(0) instanceof String){
//你的操作 }
else if(list.get(0) instanceof xxx){
//你的操作 }
}试试这个吧,没调试的