ST Metrics framework in collaborative development: Method of improving the development efficiency of the Java library
ST Metrics framework in collaborative development: Method of improving the development efficiency of the Java library
Overview:
When developing the Java library, the development team needs a method that can improve development efficiency, ensure the quality and maintenance of code.The ST Metrics framework is a tool for evaluating the quality of code and guiding code reconstruction. It provides a series of code indicators and rules.This article will introduce the ST Metrics framework and how to apply the framework in the development of the Java class library to improve the development efficiency.
Introduction to the ST Metrics framework:
ST Metrics is a Java -based framework, which aims to provide a reliable method to measure and evaluate code quality.It helps developers to evaluate the quality of the code by collecting code indicators, hidden dangers and code rules, and provide suggestions for guiding code reconstruction.The ST METRICS framework can be well integrated with other development tools, such as IDE and construction tools to check the quality of the code in real time during the development process.
ST Metrics core indicator:
Here are the core code indicators provided by the ST Metrics framework:
1. Code Complexity: It is difficult to measure the difficulty of the code to understand and maintain.Commonly used measuring indicators include Cyclomatic Complexity and nesting depth.
2. Code Size: Measure the number of rows and methods of the code.Excessive code files and methods are likely to cause readability and maintenance of code.
3. Code Duplication: Evaluate the duplicate part in the code.The presence of repeated code increases the workload when modifying the code, and it may also lead to potential errors.
4. Dependency Management: Evaluate the dependencies in the code.Good dependence management can improve the maintenance and reuse of code.
In the ST Metrics framework, the code quality standard can be defined through the threshold of the configuration indicator.The development team can be adjusted according to its own needs and project characteristics.
Application of ST Metrics in the development of Java libraries:
1. Code check: During the development process, you can use the St Metrics framework to integrate with IDE to check the quality of the code in real time.By discovering the problems in the code in time, the team can quickly correct.
2. Continuous integration: In the continuous integration process, you can use the St Metrics framework to evaluate the quality of the code.By running code measurement and rules during the construction process, you can find and repair the quality of code early.
3. Code reconstruction: The ST Metrics framework provides guidance for code reconstruction.By analyzing the suggestions provided by the code index and rules, the development team can reconstruct the code targeted to improve the maintenance and readability of the code.
Code example:
The following is an example of a simple Java library code:
public class StringUtils {
public static boolean isEmpty(String str) {
return str == null || str.trim().isEmpty();
}
public static boolean isPalindrome(String str) {
String reversed = new StringBuilder(str).reverse().toString();
return str.equalsIgnoreCase(reversed);
}
public static int countWords(String str) {
String[] words = str.trim().split("\\s+");
return words.length;
}
}
In the above examples, you can use the St Metrics framework to evaluate the quality of the code.For example, you can use the code complexity index to evaluate the complexity of the `iSpalindrome` method, use the code scale index to evaluate the scale of the entire class library, and use the repeated code indicator to check whether there is a duplicate code fragment.
in conclusion:
The ST Metrics framework is a tool that can improve the development efficiency of the Java library.It provides code indicators and rules to help developers evaluate the quality of code and provide reconstruction suggestions.In collaborative development, you can timely discover and repair the quality of code by using the ST Metrics framework to improve the maintenance and readability of the code.
