测试对象是否是instanceof参数类型 [英] Test if object is instanceof a parameter type

问题描述

有没有一种方法可以确定一个对象是否是一个泛型类型的实例？

  public< T> test（Object obj）{
 if（obj instanceof T）{
 ... 
} 
} 
  

这显然不起作用。有其他选择吗？就像我想用Java反射来实例化一个类，然后检查以确保它是类型通用 T 。

Class 对象：

  Class< T>类型; //如果（type.isInstance（obj））{
 // ... 
} 
   $ p> 
Is there a way to determine if an object is an instance of a generic type?
public <T> test(Object obj) {
    if (obj instanceof T) {
        ...
    }
}
That clearly doesn't work. Is there an alternative? Like I want to use Java reflection to instantiate a class and then check to make sure it is of type generic T.
解决方案
The only way you can do this check is if you have the Class object representing the type:
Class<T> type; //maybe passed into the method
if ( type.isInstance(obj) ) {
   //...
}


                        
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