22-Play javaweb-code block from zero

Supporting detailed video

Local code blocks and initialization blocks of code

Object-oriented-static code block

Code block summary

Combining relationships with the loading of classes

Static code block and field initialization exercises

First, what is a block of code

　　A piece of code enclosed in {} In a class or method is called a block of code.

The variables defined in the code block are called local variables, and there is no way to use them outside. The A defined here is a local variable

　　

Code blocks can be divided into three categories

1. Local code block

2. Initializing code blocks

3. Static code block

　　

Second, the local code block

　　

Third, initialize the block of code

　　

Iv. Static block of code

　　

22-Play javaweb-code block from zero