‘Typed Command Line Parser’ Framework Share in the Development of Java

‘Typed Command Line Parser’ (‘TCLP’) is an open source framework provided by Java developers for analysis and processing command line parameters.It can easily convert the command line parameters into the Java object so that developers can easily handle and operate these parameters.Using TCLP, developers can quickly build powerful and easy -to -use command line interface applications. In this article, we will share a practical application case to show how to use the TCLP framework in Java development. First, we need to set the TCLP framework according to the following steps: 1. Download the jar file of the TCLP framework and add it to the class path of the Java project. 2. Create a model of Java to define the command line parameters.This class will have attributes corresponding to the command line parameters. 3. Use the TCLP framework to parse the command line parameters in the entry method (such as the `main` method) and convert it into an object of the model class that was previously defined. The following is a simple example to explain how to use the TCLP framework to process the command line parameters: import org.apache.commons.cli.*; public class CommandLineParserExample { public static void main(String[] args) { // Define the command line parameter model class class CommandLineArguments { @Option(name = "-name", required = true, usage = "姓名") private String name; @Option(name = "-age", required = false, usage = "年龄") private int age; } // Create command line parser CommandLineParser parser = new DefaultParser(); Options options = new Options(); // Add command line parameters options.addOption(Option.builder("name") .required() .hasArg() .desc ("Name") .build()); options.addOption(Option.builder("age") .hasArg() .desc ("age") .build()); try { // Analyze the command line parameters CommandLine cmd = parser.parse(options, args); // Convert command line parameters to model class CommandLineArguments arguments = new CommandLineArguments(); arguments.name = cmd.getOptionValue("name"); arguments.age = Integer.parseInt(cmd.getOptionValue("age", "0")); // Print command line parameters System.out.println ("Name:" + Arguments.name); System.out.println ("age:" + Arguments.age); } catch (ParseException e) { System.err.println ("The command line parameter analysis failed:" + e.getMessage ()); } } } In the above example, we define a `CommandLinearguments` class, which contains a model of command line parameters. This model uses the`@option` annotation to define each parameter. Then, we created a command line parser object `CommandLineParser`, and add two command line parameters (` name` and `Age`) with the` Options` class.Next, we call the resolution's `PARSE` method to analyze the command line parameters passed to the program. Finally, we converted the analytical command line parameters to the object of `Commandlinearguments` and printed them. By running the above code, we can pass parameters in the command line, for example: java CommandLineParserExample -name John -age 25 This will output: Name: John Age: 25 This is a simple example of using the TCLP framework to process command line parameters.By adding more attributes and command line logos, you can customize more complicated command line interface applications as needed.Please note that the TCLP framework also provides many other options and functions, which can help you better handle command line parameters and provide a better user experience. The above is some sharing of the actual application cases of the "Typed Command Line Parser" framework in Java development.Hope this article is helpful to you!