45 lines
1.7 KiB
Java
45 lines
1.7 KiB
Java
// CSE 145 Lab 6: 20 Questions
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/**
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* Interface describing abstract user interaction operations.
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* This interface is implemented by the graphical and text UIs for the game.
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* Your QuestionTree interacts with the UI through this interface.
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* @author Marty Stepp
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* @version 2010/02/20
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*/
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public interface UserInterface {
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/**
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* Waits for the user to input a yes/no answer (by typing, clicking, etc.),
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* and returns that answer as a boolean value.
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* @return the answer typed by the user as a boolean (yes is true, no is false)
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*/
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boolean nextBoolean();
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/**
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* Waits for the user to input a text value, and returns that answer as a String.
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* @return the answer typed by the user as a String (empty string if no answer typed)
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*/
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String nextLine();
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/**
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* Displays the given output message to the user.
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* @param message The message to display. Assumes not null.
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*/
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void print(String message);
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/**
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* Displays the given output message to the user.
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* If the UI is a text UI, also inserts a line break (\n).
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* @param message The message to display. Assumes not null.
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*/
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void println(String message);
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// various messages that are output by the user interface
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// (your QuestionTree does not need to refer to these messages)
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final String PLAY_AGAIN_MESSAGE = "Challenge me again?";
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final String SAVE_MESSAGE = "Shall I remember these games?";
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final String LOAD_MESSAGE = "Shall I recall our previous games?";
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final String SAVE_LOAD_FILENAME_MESSAGE = "What is the file name?";
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final String STATUS_MESSAGE = "Games played: %d\nI won: %d";
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final String BANNER_MESSAGE = "Think of an item, and I will guess it.";
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} |