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Today, I would like to share with you the relevant knowledge points of java generic calls and instantiation methods. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article.

1. Generic calls are similar to normal method calls, but instead of passing parameters to the method, you pass type parameters to the Box class itself.

Box integerBox

Type parameter and type variable terms: many developers can confuse the terms "type parameter" and "type variable", but the two terms are not the same. When coding, provide type parameters to create a parameterized type. So T food in Foo

Is a type parameter, while the String string is a type parameter in Foo f.

2. Generic calls instantiate the class, using the new keyword as usual, but placing it between the class name and parentheses

.

It is often called a parameterized type (equivalent to the actual parameters of a method).

Box integerBox = new Box (); that's all of the article "java generic calls and methods for instantiating classes". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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