Here the Below Example will show you how you can construct your own Collection(ArrayList) in Java. The below example will show you that our Class Generics will behave like the ArrayList. I have use ...

java.lang.ClassCastException: java.util.ArrayList cannot be cast to com.CategoryModel at com.enation.app.shop.excel.ExcelListener.invoke(ExcelListener.java:1) ...

Type erasure in Java generics programming can cause a variety of problems in your code. Fortunately, there are ways to work around them.

Has the ConcurrentModificationException been thrown in you Java app? Here are four simple ways to fix the ConcurrentModificationException in your code.