java.lang.Object
- picocli.CommandLine.Model.PositionalParamSpec.Builder

Enclosing class:

CommandLine.Model.PositionalParamSpec
```
public static class CommandLine.Model.PositionalParamSpec.Builder
extends Object
```
Builder responsible for creating valid PositionalParamSpec objects.

Since:

3.0

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CommandLine.Range`	`arity()`	Returns how many arguments this option or positional parameter requires.
`T`	`arity(String range)`	Sets how many arguments this option or positional parameter requires, and returns this builder.
`T`	`arity(CommandLine.Range arity)`	Sets how many arguments this option or positional parameter requires, and returns this builder.
`Class<?>[]`	`auxiliaryTypes()`	Returns auxiliary type information used when the `type()` is a generic container like `Collection`, `Map`, `Optional` or an abstract class.
`T`	`auxiliaryTypes(Class<?>... types)`	Sets auxiliary type information, and returns this builder.
`CommandLine.Model.PositionalParamSpec`	`build()`	Returns a valid `PositionalParamSpec` instance.
`Iterable<String>`	`completionCandidates()`	Returns the completion candidates for this option or positional parameter, or `null`.
`T`	`completionCandidates(Iterable<String> completionCandidates)`	Sets the completion candidates for this option or positional parameter, and returns this builder.
`CommandLine.ITypeConverter<?>[]`	`converters()`	Returns one or more `type converters` to use to convert the command line argument into a strongly typed value (or key-value pair for map fields).
`T`	`converters(CommandLine.ITypeConverter<?>... cs)`	Sets option/positional param-specific converter (or converters for Maps), and returns this builder.
`String`	`defaultValue()`	Returns the default value of this option or positional parameter, before splitting and type conversion.
`T`	`defaultValue(String defaultValue)`	Sets the default value of this option or positional parameter to the specified value, and returns this builder.
`String[]`	`description()`	Returns the description of this option, used when generating the usage documentation.
`T`	`description(String... description)`	Sets the description of this option, used when generating the usage documentation, and returns this builder.
`String`	`descriptionKey()`	Returns the description key of this arg spec, used to get the description from a resource bundle.
`T`	`descriptionKey(String descriptionKey)`	Sets the description key that is used to look up the description in a resource bundle, and returns this builder.
`boolean`	`echo()`	Returns whether the user input is echoed to the console or not for an interactive option or positional parameter when asking for user input.
`T`	`echo(boolean echo)`	Sets whether the user input is echoed to the console or not for an interactive option or positional parameter.
`CommandLine.Model.IGetter`	`getter()`	Returns the `CommandLine.Model.IGetter` that is responsible for supplying the value of this argument.
`T`	`getter(CommandLine.Model.IGetter getter)`	Sets the `CommandLine.Model.IGetter` that is responsible for getting the value of this argument, and returns this builder.
`boolean`	`hasInitialValue()`	Determines whether the option or positional parameter will be reset to the `initialValue()` before parsing new input.
`T`	`hasInitialValue(boolean hasInitialValue)`	Determines whether the option or positional parameter will be reset to the `initialValue()` before parsing new input.
`boolean`	`hidden()`	Returns whether this option should be excluded from the usage message.
`T`	`hidden(boolean hidden)`	Sets whether this option should be excluded from the usage message, and returns this builder.
`boolean`	`hideParamSyntax()`	Returns whether usage syntax decorations around the paramLabel should be suppressed.
`T`	`hideParamSyntax(boolean hideParamSyntax)`	Sets whether usage syntax decorations around the paramLabel should be suppressed.
`CommandLine.Range`	`index()`	Returns an index or range specifying which of the command line arguments should be assigned to this positional parameter.
`CommandLine.Model.PositionalParamSpec.Builder`	`index(String range)`	Sets the index or range specifying which of the command line arguments should be assigned to this positional parameter, and returns this builder.
`CommandLine.Model.PositionalParamSpec.Builder`	`index(CommandLine.Range index)`	Sets the index or range specifying which of the command line arguments should be assigned to this positional parameter, and returns this builder.
`boolean`	`inherited()`	Returns whether this option is inherited from a parent command.
`T`	`inherited(boolean inherited)`	Sets whether this option is inherited from a parent command, and returns this builder.
`Object`	`initialValue()`	Returns the initial value this option or positional parameter.
`T`	`initialValue(Object initialValue)`	Sets the initial value of this option or positional parameter to the specified value, and returns this builder.
`boolean`	`interactive()`	Returns whether this option prompts the user to enter a value on the command line.
`T`	`interactive(boolean interactive)`	Sets whether this option prompts the user to enter a value on the command line, and returns this builder.
`String`	`mapFallbackValue()`	Returns the fallback value for this Map option or positional parameter: the value that is put into the Map when only the key is specified for the option or positional parameter, like `-Dkey` instead of `-Dkey=value`.
`picocli.CommandLine.Model.ArgSpec.Builder`	`mapFallbackValue(String fallbackValue)`	Sets the fallback value for this Map option or positional parameter: the value that is put into the Map when only the key is specified for the option or positional parameter, like `-Dkey` instead of `-Dkey=value`.
`CommandLine.IParameterConsumer`	`parameterConsumer()`	Returns the custom parameter handler for this option or positional parameter, or `null`.
`T`	`parameterConsumer(CommandLine.IParameterConsumer parameterConsumer)`	Sets the parameterConsumer for this option or positional parameter, and returns this builder.
`String`	`paramLabel()`	Returns the name of the option or positional parameter used in the usage help message.
`T`	`paramLabel(String paramLabel)`	Sets the name of the option or positional parameter used in the usage help message, and returns this builder.
`CommandLine.IParameterPreprocessor`	`preprocessor()`	Returns the custom `IParameterPreprocessor` to either replace or complement picocli's parsing logic for the parameter(s) of this option or position, or `null`.
`T`	`preprocessor(CommandLine.IParameterPreprocessor preprocessor)`	Sets the custom `IParameterPreprocessor` for this option or position, and returns this builder.
`String`	`prompt()`	Returns the text displayed to the end user for an interactive option or positional parameter when asking for user input.
`T`	`prompt(String prompt)`	Sets the text displayed to the end user for an interactive option or positional parameter when asking for user input.
`boolean`	`required()`	Returns whether this is a required option or positional parameter.
`T`	`required(boolean required)`	Sets whether this is a required option or positional parameter, and returns this builder.
`CommandLine.Model.ArgSpec`	`root()`	Returns the root option or positional parameter (on the parent command), if this option or positional parameter was inherited; or `null` if it was not.
`T`	`root(CommandLine.Model.ArgSpec root)`	Sets the root object for this inherited option, and returns this builder.
`CommandLine.Model.IScope`	`scope()`	Returns the binding `CommandLine.Model.IScope` that determines the instance of the enclosing element where the setter sets the value (or the getter gets the value) of this argument.
`T`	`scope(CommandLine.Model.IScope scope)`	Sets the binding `CommandLine.Model.IScope` that targets where the setter sets the value, and returns this builder.
`CommandLine.ScopeType`	`scopeType()`	Returns the scope of this argument.
`T`	`scopeType(CommandLine.ScopeType scopeType)`	Sets the scope of where this argument applies: only this command, or also all sub (and sub-sub) commands, and returns this builder.
`protected CommandLine.Model.PositionalParamSpec.Builder`	`self()`	Returns this builder.
`CommandLine.Model.ISetter`	`setter()`	Returns the `CommandLine.Model.ISetter` that is responsible for modifying the value of this argument.
`T`	`setter(CommandLine.Model.ISetter setter)`	Sets the `CommandLine.Model.ISetter` that is responsible for modifying the value of this argument, and returns this builder.
`CommandLine.Help.Visibility`	`showDefaultValue()`	Returns whether this option or positional parameter's default value should be shown in the usage help.
`T`	`showDefaultValue(CommandLine.Help.Visibility visibility)`	Sets whether this option or positional parameter's default value should be shown in the usage help, and returns this builder.
`String`	`splitRegex()`	Returns a regular expression to split option parameter values or `""` if the value should not be split.
`T`	`splitRegex(String splitRegex)`	Sets a regular expression to split option parameter values or `""` if the value should not be split, and returns this builder.
`String`	`splitRegexSynopsisLabel()`	Returns a regular expression to split option parameter for usage information.
`T`	`splitRegexSynopsisLabel(String splitRegexSynopsisLabel)`	Sets a regular expression to split option parameter for usage information.
`String`	`toString()`
`Class<?>`	`type()`	Returns the type to convert the option or positional parameter to before setting the value.
`T`	`type(Class<?> propertyType)`	Sets the type to convert the option or positional parameter to before setting the value, and returns this builder.
`CommandLine.Model.ITypeInfo`	`typeInfo()`	Returns the type info for this option or positional parameter.
`T`	`typeInfo(CommandLine.Model.ITypeInfo typeInfo)`	Sets the type info for this option or positional parameter, and returns this builder.
`Object`	`userObject()`	Returns the user object associated with this option or positional parameters.
`T`	`userObject(Object userObject)`	Sets the user object associated with this option or positional parameters, and returns this builder.
`T`	`withToString(String toString)`	Sets the string representation of this option or positional parameter to the specified value, and returns this builder.

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

- Method Detail
  - build
```
public CommandLine.Model.PositionalParamSpec build()
```
    Returns a valid PositionalParamSpec instance.
  - self
```
protected CommandLine.Model.PositionalParamSpec.Builder self()
```
    Returns this builder.
  - index
```
public CommandLine.Range index()
```
    Returns an index or range specifying which of the command line arguments should be assigned to this positional parameter.
    
    See Also:
    
    CommandLine.Parameters.index()
  - index
```
public CommandLine.Model.PositionalParamSpec.Builder index(String range)
```
    Sets the index or range specifying which of the command line arguments should be assigned to this positional parameter, and returns this builder.
  - index
```
public CommandLine.Model.PositionalParamSpec.Builder index(CommandLine.Range index)
```
    Sets the index or range specifying which of the command line arguments should be assigned to this positional parameter, and returns this builder.
  - required
```
public boolean required()
```
    Returns whether this is a required option or positional parameter.
    
    See Also:
    
    CommandLine.Option.required()
  - interactive
```
public boolean interactive()
```
    Returns whether this option prompts the user to enter a value on the command line.
    
    See Also:
    
    CommandLine.Option.interactive()
  - echo
```
public boolean echo()
```
    Returns whether the user input is echoed to the console or not for an interactive option or positional parameter when asking for user input.
    
    Since:
    
    4.6
    
    See Also:
    
    CommandLine.Option.echo(), CommandLine.Parameters.echo()
  - prompt
```
public String prompt()
```
    Returns the text displayed to the end user for an interactive option or positional parameter when asking for user input.
    
    Since:
    
    4.6
    
    See Also:
    
    CommandLine.Option.prompt(), CommandLine.Parameters.prompt()
  - description
```
public String[] description()
```
    Returns the description of this option, used when generating the usage documentation.
    
    See Also:
    
    CommandLine.Option.description()
  - descriptionKey
```
public String descriptionKey()
```
    Returns the description key of this arg spec, used to get the description from a resource bundle.
    
    Since:
    
    3.6
    
    See Also:
    
    CommandLine.Option.descriptionKey(), CommandLine.Parameters.descriptionKey()
  - arity
```
public CommandLine.Range arity()
```
    Returns how many arguments this option or positional parameter requires.
    
    See Also:
    
    CommandLine.Option.arity()
  - paramLabel
```
public String paramLabel()
```
    Returns the name of the option or positional parameter used in the usage help message.
    
    See Also:
    
    CommandLine.Option.paramLabel(), CommandLine.Parameters.paramLabel()
  - hideParamSyntax
```
public boolean hideParamSyntax()
```
    Returns whether usage syntax decorations around the paramLabel should be suppressed. The default is false: by default, the paramLabel is surrounded with '[' and ']' characters if the value is optional and followed by ellipses ("...") when multiple values can be specified.
    
    Since:
    
    3.6.0
  - auxiliaryTypes
```
public Class<?>[] auxiliaryTypes()
```
    Returns auxiliary type information used when the type() is a generic container like Collection, Map, Optional or an abstract class.
    
    See Also:
    
    CommandLine.Option.type()
  - converters
```
public CommandLine.ITypeConverter<?>[] converters()
```
    Returns one or more type converters to use to convert the command line argument into a strongly typed value (or key-value pair for map fields). This is useful when a particular option or positional parameter should use a custom conversion that is different from the normal conversion for the arg spec's type.
    
    See Also:
    
    CommandLine.Option.converter()
  - splitRegex
```
public String splitRegex()
```
    Returns a regular expression to split option parameter values or "" if the value should not be split.
    
    See Also:
    
    CommandLine.Option.split()
  - splitRegexSynopsisLabel
```
public String splitRegexSynopsisLabel()
```
    Returns a regular expression to split option parameter for usage information.
    
    Since:
    
    4.3
    
    See Also:
    
    CommandLine.Option.splitSynopsisLabel()
  - hidden
```
public boolean hidden()
```
    Returns whether this option should be excluded from the usage message.
    
    See Also:
    
    CommandLine.Option.hidden()
  - inherited
```
public boolean inherited()
```
    Returns whether this option is inherited from a parent command.
    
    Since:
    
    4.3.0
    
    See Also:
    
    CommandLine.Option.scope()
  - root
```
public CommandLine.Model.ArgSpec root()
```
    Returns the root option or positional parameter (on the parent command), if this option or positional parameter was inherited; or null if it was not.
    
    Since:
    
    4.6.0
    
    See Also:
    
    CommandLine.Option.scope()
  - type
```
public Class<?> type()
```
    Returns the type to convert the option or positional parameter to before setting the value. This may be a container type like List, Map, or Optional, in which case the type or types of the elements are returned by auxiliaryTypes().
  - typeInfo
```
public CommandLine.Model.ITypeInfo typeInfo()
```
    Returns the type info for this option or positional parameter.
    
    Returns:
    
    type information that does not require Class objects and be constructed both at runtime and compile time
    
    Since:
    
    4.0
  - userObject
```
public Object userObject()
```
    Returns the user object associated with this option or positional parameters.
    
    Returns:
    
    may return the annotated program element, or some other useful object
    
    Since:
    
    4.0
  - mapFallbackValue
```
public String mapFallbackValue()
```
    Returns the fallback value for this Map option or positional parameter: the value that is put into the Map when only the key is specified for the option or positional parameter, like -Dkey instead of -Dkey=value.
    If no mapFallbackValue is set, key-only Map parameters like -Dkey are considered invalid user input and cause a CommandLine.ParameterException to be thrown.
    
    By default, this method returns a special "__unspecified__" value indicating that no mapFallbackValue was set.
    
    Since:
    
    4.6
    
    See Also:
    
    CommandLine.Option.mapFallbackValue(), CommandLine.Parameters.mapFallbackValue()
  - defaultValue
```
public String defaultValue()
```
    Returns the default value of this option or positional parameter, before splitting and type conversion. A value of null means this option or positional parameter does not have a default.
  - initialValue
```
public Object initialValue()
```
    Returns the initial value this option or positional parameter. If hasInitialValue() is true, the option will be reset to the initial value before parsing (regardless of whether a default value exists), to clear values that would otherwise remain from parsing previous input.
  - hasInitialValue
```
public boolean hasInitialValue()
```
    Determines whether the option or positional parameter will be reset to the initialValue() before parsing new input.
  - showDefaultValue
```
public CommandLine.Help.Visibility showDefaultValue()
```
    Returns whether this option or positional parameter's default value should be shown in the usage help.
  - completionCandidates
```
public Iterable<String> completionCandidates()
```
    Returns the completion candidates for this option or positional parameter, or null.
    
    Since:
    
    3.2
  - parameterConsumer
```
public CommandLine.IParameterConsumer parameterConsumer()
```
    Returns the custom parameter handler for this option or positional parameter, or null.
    
    Since:
    
    4.0
  - preprocessor
```
public CommandLine.IParameterPreprocessor preprocessor()
```
    Returns the custom IParameterPreprocessor to either replace or complement picocli's parsing logic for the parameter(s) of this option or position, or null.
    
    Since:
    
    4.6
  - getter
```
public CommandLine.Model.IGetter getter()
```
    Returns the CommandLine.Model.IGetter that is responsible for supplying the value of this argument.
  - setter
```
public CommandLine.Model.ISetter setter()
```
    Returns the CommandLine.Model.ISetter that is responsible for modifying the value of this argument.
  - scope
```
public CommandLine.Model.IScope scope()
```
    Returns the binding CommandLine.Model.IScope that determines the instance of the enclosing element where the setter sets the value (or the getter gets the value) of this argument.
  - scopeType
```
public CommandLine.ScopeType scopeType()
```
    Returns the scope of this argument.
    
    Returns:
    
    whether this argument applies to all descendent subcommands of the command where it is defined
    
    Since:
    
    4.3
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - required
```
public T required(boolean required)
```
    Sets whether this is a required option or positional parameter, and returns this builder.
  - interactive
```
public T interactive(boolean interactive)
```
    Sets whether this option prompts the user to enter a value on the command line, and returns this builder.
  - echo
```
public T echo(boolean echo)
```
    Sets whether the user input is echoed to the console or not for an interactive option or positional parameter.
  - prompt
```
public T prompt(String prompt)
```
    Sets the text displayed to the end user for an interactive option or positional parameter when asking for user input.
  - description
```
public T description(String... description)
```
    Sets the description of this option, used when generating the usage documentation, and returns this builder.
    
    See Also:
    
    CommandLine.Option.description()
  - descriptionKey
```
public T descriptionKey(String descriptionKey)
```
    Sets the description key that is used to look up the description in a resource bundle, and returns this builder.
    
    Since:
    
    3.6
    
    See Also:
    
    CommandLine.Option.descriptionKey(), CommandLine.Parameters.descriptionKey()
  - arity
```
public T arity(String range)
```
    Sets how many arguments this option or positional parameter requires, and returns this builder.
  - arity
```
public T arity(CommandLine.Range arity)
```
    Sets how many arguments this option or positional parameter requires, and returns this builder.
  - paramLabel
```
public T paramLabel(String paramLabel)
```
    Sets the name of the option or positional parameter used in the usage help message, and returns this builder.
  - hideParamSyntax
```
public T hideParamSyntax(boolean hideParamSyntax)
```
    Sets whether usage syntax decorations around the paramLabel should be suppressed. The default is false: by default, the paramLabel is surrounded with '[' and ']' characters if the value is optional and followed by ellipses ("...") when multiple values can be specified.
    
    Since:
    
    3.6.0
  - auxiliaryTypes
```
public T auxiliaryTypes(Class<?>... types)
```
    Sets auxiliary type information, and returns this builder.
    
    Parameters:
    
    types - the element type(s) when the type() is a generic type like Collection, Map or Optional; or the concrete type when the type() is an abstract class.
  - converters
```
public T converters(CommandLine.ITypeConverter<?>... cs)
```
    Sets option/positional param-specific converter (or converters for Maps), and returns this builder.
  - splitRegex
```
public T splitRegex(String splitRegex)
```
    Sets a regular expression to split option parameter values or "" if the value should not be split, and returns this builder.
  - splitRegexSynopsisLabel
```
public T splitRegexSynopsisLabel(String splitRegexSynopsisLabel)
```
    Sets a regular expression to split option parameter for usage information.
  - showDefaultValue
```
public T showDefaultValue(CommandLine.Help.Visibility visibility)
```
    Sets whether this option or positional parameter's default value should be shown in the usage help, and returns this builder.
  - completionCandidates
```
public T completionCandidates(Iterable<String> completionCandidates)
```
    Sets the completion candidates for this option or positional parameter, and returns this builder.
    
    Since:
    
    3.2
  - parameterConsumer
```
public T parameterConsumer(CommandLine.IParameterConsumer parameterConsumer)
```
    Sets the parameterConsumer for this option or positional parameter, and returns this builder.
    
    Since:
    
    4.0
  - preprocessor
```
public T preprocessor(CommandLine.IParameterPreprocessor preprocessor)
```
    Sets the custom IParameterPreprocessor for this option or position, and returns this builder.
    
    Since:
    
    4.6
  - hidden
```
public T hidden(boolean hidden)
```
    Sets whether this option should be excluded from the usage message, and returns this builder.
  - inherited
```
public T inherited(boolean inherited)
```
    Sets whether this option is inherited from a parent command, and returns this builder.
    
    Since:
    
    4.3.0
  - root
```
public T root(CommandLine.Model.ArgSpec root)
```
    Sets the root object for this inherited option, and returns this builder.
    
    Since:
    
    4.6.0
  - type
```
public T type(Class<?> propertyType)
```
    Sets the type to convert the option or positional parameter to before setting the value, and returns this builder.
    
    Parameters:
    
    propertyType - the type of this option or parameter. For multi-value options and positional parameters this can be an array, or a (sub-type of) Collection or Map.
  - typeInfo
```
public T typeInfo(CommandLine.Model.ITypeInfo typeInfo)
```
    Sets the type info for this option or positional parameter, and returns this builder.
    
    Parameters:
    
    typeInfo - type information that does not require Class objects and be constructed both at runtime and compile time
    
    Since:
    
    4.0
  - userObject
```
public T userObject(Object userObject)
```
    Sets the user object associated with this option or positional parameters, and returns this builder.
    
    Parameters:
    
    userObject - may be the annotated program element, or some other useful object
    
    Since:
    
    4.0
  - mapFallbackValue
```
public picocli.CommandLine.Model.ArgSpec.Builder mapFallbackValue(String fallbackValue)
```
    Sets the fallback value for this Map option or positional parameter: the value that is put into the Map when only the key is specified for the option or positional parameter, like -Dkey instead of -Dkey=value.
    If no mapFallbackValue is set, key-only Map parameters like -Dkey are considered invalid user input and cause a CommandLine.ParameterException to be thrown.
    
    Since:
    
    4.6
    
    See Also:
    
    CommandLine.Option.mapFallbackValue(), CommandLine.Parameters.mapFallbackValue()
  - defaultValue
```
public T defaultValue(String defaultValue)
```
    Sets the default value of this option or positional parameter to the specified value, and returns this builder. Before parsing the command line, the result of splitting and type converting this default value is applied to the option or positional parameter. A value of null or "__no_default_value__" means no default.
  - initialValue
```
public T initialValue(Object initialValue)
```
    Sets the initial value of this option or positional parameter to the specified value, and returns this builder. If hasInitialValue() is true, the option will be reset to the initial value before parsing (regardless of whether a default value exists), to clear values that would otherwise remain from parsing previous input.
  - hasInitialValue
```
public T hasInitialValue(boolean hasInitialValue)
```
    Determines whether the option or positional parameter will be reset to the initialValue() before parsing new input.
  - getter
```
public T getter(CommandLine.Model.IGetter getter)
```
    Sets the CommandLine.Model.IGetter that is responsible for getting the value of this argument, and returns this builder.
  - setter
```
public T setter(CommandLine.Model.ISetter setter)
```
    Sets the CommandLine.Model.ISetter that is responsible for modifying the value of this argument, and returns this builder.
  - scope
```
public T scope(CommandLine.Model.IScope scope)
```
    Sets the binding CommandLine.Model.IScope that targets where the setter sets the value, and returns this builder.
  - scopeType
```
public T scopeType(CommandLine.ScopeType scopeType)
```
    Sets the scope of where this argument applies: only this command, or also all sub (and sub-sub) commands, and returns this builder.
    
    Since:
    
    4.3
  - withToString
```
public T withToString(String toString)
```
    Sets the string representation of this option or positional parameter to the specified value, and returns this builder.

Class CommandLine.Model.PositionalParamSpec.Builder

Method Summary

Methods inherited from class java.lang.Object

Method Detail

build

self

index

index

index

required

interactive

echo

prompt

description

descriptionKey

arity

paramLabel

hideParamSyntax

auxiliaryTypes

converters

splitRegex

splitRegexSynopsisLabel

hidden

inherited

root

type

typeInfo

userObject

mapFallbackValue

defaultValue

initialValue

hasInitialValue

showDefaultValue

completionCandidates

parameterConsumer

preprocessor

getter

setter

scope

scopeType

toString

required

interactive

echo

prompt

description

descriptionKey

arity

arity

paramLabel

hideParamSyntax

auxiliaryTypes

converters

splitRegex

splitRegexSynopsisLabel

showDefaultValue

completionCandidates

parameterConsumer

preprocessor

hidden

inherited

root

type

typeInfo

userObject

mapFallbackValue

defaultValue

initialValue

hasInitialValue

getter

setter

scope

scopeType

withToString