Introduction to refactoring methods in Java language

Java is a very popular programming language that is widely used in the field of software development. In Java, refactoring is an important technique that can improve the structure and readability of the code without changing the function of the code. This article will introduce the refactoring method in Java language.

1. Extract Method

The Extract Method is a commonly used refactoring method. Its purpose is to separate overly long or complex code segments into An independent method. The refining method can be carried out through the following steps:

1) Select the code segment that needs to be refined.

2) Use the shortcut key Ctrl Alt M to refine the code into a new method.

3) Name the new method and set the parameters as needed.

2. Inline Method

The inline method is a reconstruction method opposite to the extraction method. Its purpose is to directly embed the content of a method to where the method is called. Inline methods can be performed through the following steps:

1) Select the method that needs to be inlined.

2) Use the shortcut key Ctrl Alt Numpad_Subtract to inline the method to the calling site.

3. Extract Variable

Extract variable is a reconstruction method that extracts reused expressions and assigns them to a variable. Variables can be extracted through the following steps:

1) Select the expression to be extracted.

2) Use the shortcut key Ctrl Alt V to extract the expression into a variable.

3) Name the variable.

4. Inline Variable

Inline variable is a reconstruction method that directly replaces a variable with its value where it is used. You can inline variables through the following steps:

1) Select the variables that need to be inlined.

2) Use the shortcut key Ctrl Alt Numpad_Divide to inline the variable to where it is used.

5. Extract Interface

Extract interface is a reconstruction method that extracts some externally visible methods in a class into a new interface. The interface can be refined through the following steps:

1) Select a set of methods that need to be refined.

2) Use the shortcut key Ctrl Alt Shift T to extract these methods into a new interface.

3) Configure the relationship between interfaces and classes.

The above are several commonly used refactoring methods in the Java language, which can effectively improve the readability and maintainability of the code. Of course, in actual development, there are many other reconstruction methods, which need to be selected and applied according to the actual situation.

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