getBoolean(key: string, defaultValue?: boolean): boolean

Gets a value (if existing) for a key as a Boolean Object. A default value can be provided in case there is no existing value.

getNumber(key: string, defaultValue?: number): number

Gets a value (if existing) for a key as a Number Object. A default value can be provided in case there is no existing value.

getString(key: string, defaultValue?: string): string

Gets a value (if existing) for a key as a String Object. A default value can be provided in case there is no existing value.

hasKey(key: string): boolean

Checks whether such a key exists.

remove(key: string): void

Removes a value (if existing) for a key.

setBoolean(key: string, value: boolean): void

Sets a Boolean Object for a key.

setNumber(key: string, value: number): void

Sets a Number Object for a key.

setString(key: string, value: string): void

Sets a String Object for a key.