Example usage for org.apache.commons.cli2.util HelpFormatter printHeader

Introduction

In this page you can find the example usage for org.apache.commons.cli2.util HelpFormatter printHeader.

Prototype

public void printHeader() 

Source Link

Document

Prints a header string if necessary

Usage

From source file:broadwick.CliOptions.java

/**
 * Construct and provide GNU-compatible Options. Read the command line extracting the arguments, this
 * additionally displays the help message if the command line is empty.
 *
 * @param args the command line arguments.
 *//*from w w  w  .  j a  v a 2s .c  om*/
public CliOptions(final String[] args) {
    buildCommandLineArguments();

    final Parser parser = new Parser();
    parser.setGroup(options);
    final HelpFormatter hf = new HelpFormatter(SPACE, SPACE, SPACE, LINEWIDTH);
    parser.setHelpFormatter(hf);
    parser.setHelpTrigger("--help");
    cmdLine = parser.parseAndHelp(args);

    if (cmdLine == null) {
        hf.printHeader();
        throw new BroadwickException("Empty command line.");
    }

    validateCommandLineArguments();
}

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