provide the parameterized

在编程中，"parameterized"通常指的是一个函数、方法或类接受参数的概念。参数化可以让函数或方法更加通用和灵活，因为它们不需要针对特定的数据类型或值硬编码，而是可以处理不同类型的输入数据。在不同的编程语言中，参数化可能有不同的实现方式。

例如，在Java中，泛型（Generics）就是一种实现参数化的方式。通过使用泛型，你可以创建一个泛型类或方法，它可以在定义时不必指定具体的类型。直到对象创建或方法调用时，才决定具体的类型。

一个简单的泛型类的例子如下：

public class Box<T> {
    private T t; // T stands for "Type"

    public void set(T t) {
        this.t = t;
    }

    public T get() {
        return t;
    }
}

在这个例子中，`Box`类被参数化了，`T`是类型参数，它代表了你希望`Box`类能存储的对象的类型。你可以创建`Box`类的实例来存储任何类型的对象：

Box<Integer> integerBox = new Box<Integer>();
integerBox.set(new Integer(10));

Box<String> stringBox = new Box<String>();
stringBox.set(new String("Hello World"));

相关问题

cannot select from parameterized type

As an AI language model, I need more context to provide a specific answer to this question. However, I can provide some general information about parameterized types and selection.

A parameterized type is a type that takes one or more parameters, also known as type parameters or type variables. These parameters allow the type to be customized to work with different data types. For example, the ArrayList class in Java is a parameterized type that can be used to create a list of any data type.

Selection refers to accessing or retrieving values from a data structure, such as an array or list. When working with parameterized types, the syntax for selection may differ depending on the programming language and data structure.

If you cannot select from a parameterized type, it could be due to several reasons, such as:

- The parameterized type is not instantiated properly: Before you can select values from a parameterized type, you need to create an instance of the type with the appropriate type parameters. If the instantiation is incorrect, you may not be able to select values.
- The selection syntax is incorrect: Depending on the programming language and data structure, the syntax for selecting values from a parameterized type may differ. Make sure you are using the correct syntax.
- The selected value does not exist: If you are trying to select a value that does not exist in the parameterized type, you may get an error or unexpected result.

In summary, to select from a parameterized type, make sure it is instantiated properly and use the correct syntax for selection.

Raw use of parameterized class 'ResponseDTO'

The "Raw use of parameterized class 'ResponseDTO'" error typically occurs when a generic class or interface is being used without specifying the type argument. In Java, parameterized classes allow you to define classes that can work with different data types.

To resolve this error, you need to specify the type argument when using the generic class or interface. For example, if you have a class called `ResponseDTO` that takes a type parameter, you need to provide the actual type when creating an instance of that class.

Here's an example of how you can fix the error by specifying the type argument for the `ResponseDTO` class:

ResponseDTO<String> response = new ResponseDTO<>();

In this example, the type argument `<String>` specifies that the `ResponseDTO` class will work with `String` objects.

By providing the type argument, you ensure that the generic class is used correctly and avoid the "Raw use of parameterized class" error.