Use of the Eclipse Refactoring feature and refactoring shortcut keys

What is refactoring? Improve the design of the code after it has been written.


Refactoring classification: Physical structure, class hierarchy, class internal structure.

Name	Shortcut keys	Literal translation	Function range	Describe
Rename	Alt + Shift + R			You can rename any variable, class, method, package name, folder, and all the places you use will be modified uniformly.
Move	Alt + Shift + V		Field	Move a field to another class, move the class to another package

Name	Shortcut keys	Literal translation	Function range	Describe
Change Method Signature	Alt + Shift + C	modifying method signatures	Method	Operation of the method, you can modify the method name, access permissions, increase the deletion method parameters, modify the parameter order, add method exception
Extract Method	Alt + Shift + M	Extract as Method	Method	Arbitrarily select a piece of code, automatically convert to method, add parameter return type automatically.
Extract Local Variable	Alt + Shift + L	Extracting Local variables	Character/number	Usually used for expressions, to extract one of the local variables, such as 3 + 5 is extracted to int i = 3;
Extract Constant	Ctrl+1 Extract to Constant	Extracting constants	Character/number	Extracts a string or a number from any position into a static global constant. Any use of this character or number will be replaced with a constant.
Inline	Alt + Shift + I	Inline	Method	Replace the place where this method is called directly with the contents of this method. Select any method to use this feature. (with all invocations and only the selected invocation two options)

Name	Shortcut keys	Literal translation	Function range	Describe
Convert Local Variable to Field	Alt + Shift + K	Local variables are transformed into global variables	Local variables	The variable name can be re-modified by converting the local variable to all variables.
Convert Anonymous Class to Nested		Anonymous classes are converted to nested inner classes	Anonymous class	You can set the type, internally containing the field type, and so on.
Move Type to New File		Move a class to a new file	Nested classes	Create a new class file in a nested class

Name	Shortcut keys	Literal translation	Function range	Describe
Extract Supperclass		Extract Parent class		Extracts the selected field or method into its parent class (note that the fields used in the extraction method are extracted first)
Extract Interface		Extract Interface	Class	Generate an interface from a method of a class (only the method of the current class becomes an interface, and other places where this method is used)
Use supertype Where Possible		Use parent type whenever possible	Class	Change the selected reference up to a reference to its parent class
Push down		Push down	Variables, methods	Move the selected method from the parent class to the child class, and the response method in the parent class becomes an abstract method
Pull Up		Move Up	Variables, methods	In contrast to push down, the method of the handle class is moved to the parent class

Name	Shortcut keys	Literal translation	Function range	Describe
Extract Class		Extract as Class	Field	To refer to the new class for all the selected fields, you can choose to create a new file or make the inner class
Introduce Parameter Object		Introducing Parameter objects	Method	Extracting a method parameter into a class (to avoid referencing the modified exception in the method)

Name	Shortcut keys	Literal translation	Function range	Describe
Introduce indirection				Allow other classes to invoke a method of the current class
Introduce Factory		Reference Factory	constructor function	Returns an object using a method
Introduce Parameter		Introducing Parameters		To extract a field as a parameter in a method
Encapsulate Filed		Encapsulate Fields		To provide a Setter/getter method for a field

Introduce factoryselected entity is a constructor invocation or definition.

Name	Shortcut keys	Literal translation	Function range	Describe
Generalize declared Type				Replaces a non-primitive object field (or method parameter) with its parent type.
Infer Generic Type Arguments				Speculate on the appropriate generic type for those types in the original form

Generalize declared type may occur with an exception Generalize declared type is not supported on primitive types. Original type not supported

Name	Shortcut keys	Literal translation	Function range	Describe
Migrate JAR File
Create Script
Apply Script
History

References"Eclipse 3 Advanced Programming"
Explore the refactoring features in Eclipse JDT

Create a new refactoring feature in Eclipse

Use of the Eclipse Refactoring feature and refactoring shortcut keys