Categories:
Audio (13)
Biotech (29)
Bytecode (36)
Database (77)
Framework (7)
Game (7)
General (507)
Graphics (53)
I/O (35)
IDE (2)
JAR Tools (102)
JavaBeans (21)
JDBC (121)
JDK (426)
JSP (20)
Logging (108)
Mail (58)
Messaging (8)
Network (84)
PDF (97)
Report (7)
Scripting (84)
Security (32)
Server (121)
Servlet (26)
SOAP (24)
Testing (54)
Web (15)
XML (322)
Collections:
Other Resources:
Commons CLI API - Long Options Example
Where to get a Java example of managing long options with Commons CLI API?
✍: FYIcenter.com
Here is good Java example of managing long 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 LongOptionTest {
public static void main(String[] args) throws Exception {
// Define a long option: --help -help -h
Options options = new Options();
options.addOption("h", "help", false, "Print this help message");
try {
// Parse options
CommandLineParser parser = new DefaultParser();
CommandLine cmd = parser.parse(options, args);
// Process options
if (cmd.hasOption("help")) {
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("LongOptionTest", 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 LongOptionTest.java C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar LongOptionTest -h usage: LongOptionTest -h,--help Print this help message C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar LongOptionTest --help usage: LongOptionTest -h,--help Print this help message C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar LongOptionTest -help usage: LongOptionTest -h,--help Print this help message C:\fyicenter>java -cp .;C:\fyicenter\commons-cli-1.4\commons-cli-1.4.jar LongOptionTest -helps Invalid options: -helps usage: LongOptionTest -h,--help Print this help message
⇒ Commons CLI API - Options with Arguments
⇐ Commons CLI API - Long Options
2020-12-15, ∼1514🔥, 0💬
Popular Posts:
Apache Log4j API provides the interface that applications should code to and provides the adapter co...
JDK 17 jdk.localedata.jmod is the JMOD file for JDK 17 Localedata module. JDK 17 Locale Data module ...
JDK 17 jdk.localedata.jmod is the JMOD file for JDK 17 Localedata module. JDK 17 Locale Data module ...
JDK 11 jdk.internal.opt.jmod is the JMOD file for JDK 11 Internal Opt module. JDK 11 Internal Opt mo...
JDK 17 java.management.jmod is the JMOD file for JDK 17 Management module. JDK 17 Management module ...