Generics make your code more flexible and easier to read, and they help you avoid ClassCastExceptions at runtime. Get started with this introduction to using generics with the Java Collections ...

java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType at com.hjq.http.EasyUtils.getGenericType(EasyUtils.java:421) at ...

Java Wrapper's getClass() method now return a Wrapper of java.lang.Object, which can not invoke java.lang.Class's method, such as getName()/getClassLoader(). It must be explicitly cast to a wrapper of ...