我想创建一个包含实体的模拟。可以有两种实体,复杂和简单的实体。当我实例化一个简单的仿真时,我希望简单的实体被实例化,并且当我实例化一个复杂的仿真时,我希望实例化复杂的实体。当使用通用Java类时的InstantiationException
实体:
class ComplexEntity extends Entity {
public ComplexEntity(){}
}
class SimpleEntity extends Entity {
public SimpleEntity(){}
}
class Entity {
public Entity(){}
}
模拟:
class ComplexSimulation extends Simulation<ComplexEntity>
{
public ComplexSimulation() throws InstantiationException, IllegalAccessException {
super(ComplexEntity.class);
}
}
class SimpleSimulation extends Simulation<SimpleEntity>
{
public SimpleSimulation() throws InstantiationException, IllegalAccessException
{
super(SimpleEntity.class);
}
}
class Simulation<E extends Entity> {
protected final E entity;
public Simulation(Class<E> class1) throws InstantiationException, IllegalAccessException
{
entity = class1.newInstance();
}
}
的问题是,当我尝试构建一个ComplexSimulation:
ComplexSimulation c = new ComplexSimulation();
我得到以下Instantiat ionException:
java.lang.InstantiationException: test.Test$ComplexEntity
at java.lang.Class.newInstance(Unknown Source)
at test.Test$Simulation.<init>(Test.java:55)
at test.Test$ComplexSimulation.<init>(Test.java:37)
at test.Test.go(Test.java:12)
at test.Test.main(Test.java:6)
Caused by: java.lang.NoSuchMethodException: test.Test$ComplexEntity.<init>()
at java.lang.Class.getConstructor0(Unknown Source)
零参数的构造函数不能成为问题,因为我的实体有他们......有人知道什么问题可以是?
例外要告诉你什么是错的。发布堆栈跟踪。 –
我添加了堆栈跟踪 – marczoid
您正在使用不删除的泛型类,泛型类型现在不是实际的类型。 – 2015-10-05 16:27:35