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Commons CLI API - Short Options Example
Where to get a Java example of managing short options with Commons CLI API?
✍: FYIcenter.com
Here is good Java example of managing short options with Commons CLI API,
ShortOptionTest.java:
// Copyright (c) 2018 FYIcenter.com import org.apache.commons.cli.Options; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.DefaultParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.UnrecognizedOptionException; public class ShortOptionTest { public static void main(String[] args) throws Exception { // Define a short option: -h Options options = new Options(); options.addOption("h", "Print this help message"); try { // Parse options CommandLineParser parser = new DefaultParser(); CommandLine cmd = parser.parse(options, args); // Process options if (cmd.hasOption("h")) { help(options); } } catch (UnrecognizedOptionException e) { System.out.println("Invalid options: "+e.getOption()); help(options); } } public static void help(Options options) { // Print options HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("ShortOptionTest", options); } }
You can compile and run it with commons-cli-1.4.jar:
C:\fyicenter>javac -cp C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar ShortOptionTest.java C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar ShortOptionTest -h usage: ShortOptionTest -h Print this help message C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar ShortOptionTest -help Invalid options: -help usage: ShortOptionTest -h Print this help message C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar ShortOptionTest -? Invalid options: -? usage: ShortOptionTest -h Print this help message
⇒ Commons CLI API - Long Options
⇐ Commons CLI API - Short Options
2020-12-22, 772🔥, 0💬
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