Recommendation for Java Class Library Open Source Projects Based on the Minimist Framework
Recommendation for Java Class Library Open Source Projects Based on the Minimist Framework
In Java development, using command line parameters is an important way to provide flexibility and interactivity. Minimist is a lightweight command-line parameter parser that simplifies the process of processing command-line parameters. In this article, I will recommend some Java class library open source projects based on the Minimist framework to you.
1. JCommander: JCommander is a concise and powerful command-line parameter parsing library based on the Minimist framework, providing more features and flexibility. With JCommander, you can easily define and parse command-line parameters, while also supporting automatic generation of help documents and custom parameter validation. The following is an example code for parsing parameters using JCommander:
public class Main {
@Parameter(names = {"-h", "--help"}, help = true, description = "Print the help message")
private boolean help;
@Parameter(names = {"-n", "--name"}, description = "Your name")
private String name;
public static void main(String[] args) {
Main main = new Main();
JCommander commander = JCommander.newBuilder()
.addObject(main)
.build();
try {
commander.parse(args);
if (main.help) {
commander.usage();
return;
}
System.out.println("Hello, " + main.name + "!");
} catch (ParameterException e) {
System.err.println(e.getMessage());
commander.usage();
}
}
}
In the above example, we defined a 'Main' class that specifies the name and description of command line parameters by using the '@ Parameter' annotation. Then, we can use 'JCommander' to parse command line parameters and execute corresponding logic based on the parameters.
2. Args4j: Args4j is another command-line parameter parsing library based on the Minimist framework, which provides a set of annotations to define and parse command-line parameters. Args4j supports automatic parameter parsing from Java beans and also supports various types of parameters, such as integers, strings, Boolean values, etc. The following is an example code for parsing parameters using Args4j:
public class Main {
@Option(name = "-h", aliases = "--help", help = true, usage = "Print the help message")
private boolean help;
@Option(name = "-n", aliases = "--name", usage = "Your name")
private String name;
public static void main(String[] args) {
Main main = new Main();
CmdLineParser parser = new CmdLineParser(main, ParserProperties.defaults().withUsageWidth(80));
try {
parser.parseArgument(args);
if (main.help) {
parser.printUsage(System.out);
return;
}
System.out.println("Hello, " + main.name + "!");
} catch (CmdLineException e) {
System.err.println(e.getMessage());
parser.printUsage(System.err);
}
}
}
In this example, we define a 'Main' class and specify the name, alias, and description of command line parameters by using the '@ Option' annotation. Then, we use 'CmdLineParser' to parse command line parameters and execute corresponding logic based on the parameters.
Summary:
The Java class library based on the Minimist framework can help us easily handle command line parameters and provide flexibility and interactivity. In this article, we recommend two Java class library open source projects based on the Minimist framework: JCommander and Args4j. They all provide concise and powerful command line parameter parsing capabilities, making it easier for developers to handle command line parameters. I hope these open source projects can be helpful for your Java development work!
