Modify variable names and method names in Java Code refactoring

There are several situations where variable and method names need to be refactored: 1. Variable names and method names do not comply with naming conventions: The naming convention can be determined based on the company's coding conventions, usually using the hump naming method. If variable and method names are all uppercase or lowercase, special characters or abbreviations are used, refactoring is necessary to comply with naming conventions. Code before refactoring: String UFN// Incorrect naming convention, using all uppercase Public void setd() {//Incorrect naming convention, using abbreviations \t// code logic } Refactored code: String userName// Correct naming conventions Public void setDate() {//Correct naming convention \t// code logic } 2. Variable and method names should not be descriptive: variable and method names should clearly express their purpose and meaning, making it easy to understand the function and meaning of the code. If variable and method names are too simple or too abstract, it will make it difficult for others to read and maintain the code. Code before refactoring: Int a// Lack of descriptive variable names Public void func (String p) {//Lack of descriptive method names \t// code logic } Refactored code: Int userAge// Descriptive variable names Public void deleteUser (String userId) {//Descriptive method name \t// code logic } 3. Variable names and method names may have the same name or are prone to confusion: If there are variables or methods with the same name within the same scope, or if the names are too similar and are prone to confusion, refactoring is needed to avoid naming conflicts. Code before refactoring: int count; public void getCount() { \t// code logic } Refactored code: Int totalCount// Rename to avoid duplicate names with method names Public void fetchCount() {//Rename to avoid duplicate names with variable names \t// code logic } By modifying variable and method names, the readability and maintainability of the code can be increased, making it easier to understand and use.