java.lang.Object
- joptsimple.AbstractOptionSpec<Void>
- - joptsimple.OptionSpecBuilder

All Implemented Interfaces:

OptionDescriptor, OptionSpec<Void>
```
public class OptionSpecBuilder
extends AbstractOptionSpec<Void>
```
Allows callers to specify whether a given option accepts arguments (required or optional).
Instances are returned from OptionParser.accepts(String) to allow the formation of parser directives as sentences in a "fluent interface" language. For example:
```
   OptionParser parser = new OptionParser();
   parser.accepts( "c" ).withRequiredArg().ofType( Integer.class );
 
```
If no methods are invoked on an instance of this class, then that instance's option will accept no argument.

Note that you should not use the fluent interface clauses in a way that would defeat the typing of option arguments:
```
   OptionParser parser = new OptionParser();
   ArgumentAcceptingOptionSpec<String> optionC =
       parser.accepts( "c" ).withRequiredArg();
   optionC.ofType( Integer.class );  // DON'T THROW AWAY THE TYPE!

   String value = parser.parse( "-c", "2" ).valueOf( optionC );  // ClassCastException
 
```
Author:

Paul Holser

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`acceptsArguments()`	Does this option accept arguments?
`String`	`argumentDescription()`	Gives a short description of the option's argument.
`String`	`argumentTypeIndicator()`	Gives an indication of the expected type of the option's argument.
`OptionSpecBuilder`	`availableIf(String dependent, String... otherDependents)`	Informs an option parser that this builder's option is allowed if the given option is present on the command line.
`OptionSpecBuilder`	`availableIf(OptionSpec<?> dependent, OptionSpec<?>... otherDependents)`	Informs an option parser that this builder's option is allowed if the given option is present on the command line.
`OptionSpecBuilder`	`availableUnless(String dependent, String... otherDependents)`	Informs an option parser that this builder's option is allowed if the given option is absent on the command line.
`OptionSpecBuilder`	`availableUnless(OptionSpec<?> dependent, OptionSpec<?>... otherDependents)`	Informs an option parser that this builder's option is allowed if the given option is absent on the command line.
`protected Void`	`convert(String argument)`
`List<Void>`	`defaultValues()`	What values will the option take if none are specified on the command line?
`boolean`	`isRequired()`	Is this option required on a command line?
`OptionSpecBuilder`	`requiredIf(String dependent, String... otherDependents)`	Informs an option parser that this builder's option is required if the given option is present on the command line.
`OptionSpecBuilder`	`requiredIf(OptionSpec<?> dependent, OptionSpec<?>... otherDependents)`	Informs an option parser that this builder's option is required if the given option is present on the command line.
`OptionSpecBuilder`	`requiredUnless(String dependent, String... otherDependents)`	Informs an option parser that this builder's option is required if the given option is absent on the command line.
`OptionSpecBuilder`	`requiredUnless(OptionSpec<?> dependent, OptionSpec<?>... otherDependents)`	Informs an option parser that this builder's option is required if the given option is absent on the command line.
`boolean`	`requiresArgument()`	Does this option require an argument?
`ArgumentAcceptingOptionSpec<String>`	`withOptionalArg()`	Informs an option parser that this builder's option accepts an optional argument.
`ArgumentAcceptingOptionSpec<String>`	`withRequiredArg()`	Informs an option parser that this builder's option requires an argument.

Methods inherited from class joptsimple.AbstractOptionSpec
argumentTypeIndicatorFrom, convertWith, description, equals, forHelp, hashCode, isForHelp, options, representsNonOptions, toString, value, values

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Method Detail
  - withRequiredArg
```
public ArgumentAcceptingOptionSpec<String> withRequiredArg()
```
    Informs an option parser that this builder's option requires an argument.
    
    Returns:
    
    a specification for the option
  - withOptionalArg
```
public ArgumentAcceptingOptionSpec<String> withOptionalArg()
```
    Informs an option parser that this builder's option accepts an optional argument.
    
    Returns:
    
    a specification for the option
  - requiredIf
```
public OptionSpecBuilder requiredIf(String dependent,
                                    String... otherDependents)
```
    Informs an option parser that this builder's option is required if the given option is present on the command line.
    
    For a given option, you should not mix this with requiredUnless to avoid conflicts.
    
    Parameters:
    
    dependent - an option whose presence on a command line makes this builder's option required
    
    otherDependents - other options whose presence on a command line makes this builder's option required
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
    
    Throws:
    
    OptionException - if any of the dependent options haven't been configured in the parser yet
  - requiredIf
```
public OptionSpecBuilder requiredIf(OptionSpec<?> dependent,
                                    OptionSpec<?>... otherDependents)
```
    Informs an option parser that this builder's option is required if the given option is present on the command line.
    
    For a given option, you should not mix this with requiredUnless to avoid conflicts.
    
    This method recognizes only instances of options returned from the fluent interface methods.
    
    Parameters:
    
    dependent - the option whose presence on a command line makes this builder's option required
    
    otherDependents - other options whose presence on a command line makes this builder's option required
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
  - requiredUnless
```
public OptionSpecBuilder requiredUnless(String dependent,
                                        String... otherDependents)
```
    Informs an option parser that this builder's option is required if the given option is absent on the command line.
    
    For a given option, you should not mix this with requiredIf to avoid conflicts.
    
    Parameters:
    
    dependent - an option whose absence on a command line makes this builder's option required
    
    otherDependents - other options whose absence on a command line makes this builder's option required
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
    
    Throws:
    
    OptionException - if any of the dependent options haven't been configured in the parser yet
  - requiredUnless
```
public OptionSpecBuilder requiredUnless(OptionSpec<?> dependent,
                                        OptionSpec<?>... otherDependents)
```
    Informs an option parser that this builder's option is required if the given option is absent on the command line.
    
    For a given option, you should not mix this with requiredIf to avoid conflicts.
    
    This method recognizes only instances of options returned from the fluent interface methods.
    
    Parameters:
    
    dependent - the option whose absence on a command line makes this builder's option required
    
    otherDependents - other options whose absence on a command line makes this builder's option required
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
  - availableIf
```
public OptionSpecBuilder availableIf(String dependent,
                                     String... otherDependents)
```
    Informs an option parser that this builder's option is allowed if the given option is present on the command line.
    
    For a given option, you should not mix this with availableUnless to avoid conflicts.
    
    Parameters:
    
    dependent - an option whose presence on a command line makes this builder's option allowed
    
    otherDependents - other options whose presence on a command line makes this builder's option allowed
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
    
    Throws:
    
    OptionException - if any of the dependent options haven't been configured in the parser yet
  - availableIf
```
public OptionSpecBuilder availableIf(OptionSpec<?> dependent,
                                     OptionSpec<?>... otherDependents)
```
    Informs an option parser that this builder's option is allowed if the given option is present on the command line.
    
    For a given option, you should not mix this with requiredUnless to avoid conflicts.
    
    This method recognizes only instances of options returned from the fluent interface methods.
    
    Parameters:
    
    dependent - the option whose presence on a command line makes this builder's option allowed
    
    otherDependents - other options whose presence on a command line makes this builder's option allowed
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
  - availableUnless
```
public OptionSpecBuilder availableUnless(String dependent,
                                         String... otherDependents)
```
    Informs an option parser that this builder's option is allowed if the given option is absent on the command line.
    
    For a given option, you should not mix this with requiredIf to avoid conflicts.
    
    Parameters:
    
    dependent - an option whose absence on a command line makes this builder's option allowed
    
    otherDependents - other options whose absence on a command line makes this builder's option allowed
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
    
    Throws:
    
    OptionException - if any of the dependent options haven't been configured in the parser yet
  - availableUnless
```
public OptionSpecBuilder availableUnless(OptionSpec<?> dependent,
                                         OptionSpec<?>... otherDependents)
```
    Informs an option parser that this builder's option is allowed if the given option is absent on the command line.
    
    For a given option, you should not mix this with requiredIf to avoid conflicts.
    
    This method recognizes only instances of options returned from the fluent interface methods.
    
    Parameters:
    
    dependent - the option whose absence on a command line makes this builder's option allowed
    
    otherDependents - other options whose absence on a command line makes this builder's option allowed
    
    Returns:
    
    self, so that the caller can add clauses to the fluent interface sentence
  - acceptsArguments
```
public boolean acceptsArguments()
```
    Description copied from interface: OptionDescriptor
    
    Does this option accept arguments?
    
    Returns:
    
    whether the option accepts arguments
  - requiresArgument
```
public boolean requiresArgument()
```
    Description copied from interface: OptionDescriptor
    
    Does this option require an argument?
    
    Returns:
    
    whether the option requires an argument
  - isRequired
```
public boolean isRequired()
```
    Description copied from interface: OptionDescriptor
    
    Is this option required on a command line?
    
    Returns:
    
    whether the option is required
  - argumentDescription
```
public String argumentDescription()
```
    Description copied from interface: OptionDescriptor
    
    Gives a short description of the option's argument.
    
    Returns:
    
    a description for the option's argument
  - argumentTypeIndicator
```
public String argumentTypeIndicator()
```
    Description copied from interface: OptionDescriptor
    
    Gives an indication of the expected type of the option's argument.
    
    Returns:
    
    a description for the option's argument type
  - convert
```
protected Void convert(String argument)
```
    Specified by:
    
    convert in class AbstractOptionSpec<Void>
  - defaultValues
```
public List<Void> defaultValues()
```
    Description copied from interface: OptionDescriptor
    
    What values will the option take if none are specified on the command line?
    
    Returns:
    
    any default values for the option

Class OptionSpecBuilder

Method Summary

Methods inherited from class joptsimple.AbstractOptionSpec

Methods inherited from class java.lang.Object

Method Detail

withRequiredArg

withOptionalArg

requiredIf

requiredIf

requiredUnless

requiredUnless

availableIf

availableIf

availableUnless

availableUnless

acceptsArguments

requiresArgument

isRequired

argumentDescription

argumentTypeIndicator

convert

defaultValues