• public boolean validCommand(CommandStack stack) o Returns whether this Command is valid and can be added to the given CommandStack. Specific behavior will be outlined in the followi • public String toString() o Returns the String representation of this Command in long form (for current screen display) • public String toShortString() o Returns the String representation of this Command in short form (for stack display)
• public boolean validCommand(CommandStack stack) o Returns whether this Command is valid and can be added to the given CommandStack. Specific behavior will be outlined in the followi • public String toString() o Returns the String representation of this Command in long form (for current screen display) • public String toShortString() o Returns the String representation of this Command in short form (for stack display)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
![Command
Write a fully-documented interface named Command to represent each command entered on the phone app. The Command interface will require the following
methods:
public boolean validCommand(CommandStack stack)
o Returns whether this Command is valid and can be added to the given CommandStack. Specific behavior will be outlined in the following classes.
• public String toString()
o Returns the String representation of this Command in long form (for current screen display)
• public String toShortString()
o Returns the String representation of this Command in short form (for stack display)
Map Commands
• FindPlace implements Command
o Write a fully-documented class named FindPlace to represent the "F: Find a place" command for the Maps app. This class requires the following
properties (with NO mutators, However, accessors are allowed) and methods:
1 private String destination
public FindPlace(Scanner scanner)
• Constructs this FindPlace instance accordingly using the Scanner.
- public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this FindPlace command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
• PlanRoute implements Command
o Write a fully-documented class named PlanRoute to represent the "P: Plan a route" command for the Maps app. This class requires the following
properties (with NO mutators, However, accessors are allowed) and methods:
1 private String source
- private String destination
- public PlanRoute(Scanner scanner)
• Constructs this PlanRoute instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this PlanRoute command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59bff8cf-42f1-4073-9e02-ab773895c234%2Faddbb5e0-fdc0-44ee-b0c4-4da8bec70c96%2Frrryv5r_processed.png&w=3840&q=75)
Transcribed Image Text:Command
Write a fully-documented interface named Command to represent each command entered on the phone app. The Command interface will require the following
methods:
public boolean validCommand(CommandStack stack)
o Returns whether this Command is valid and can be added to the given CommandStack. Specific behavior will be outlined in the following classes.
• public String toString()
o Returns the String representation of this Command in long form (for current screen display)
• public String toShortString()
o Returns the String representation of this Command in short form (for stack display)
Map Commands
• FindPlace implements Command
o Write a fully-documented class named FindPlace to represent the "F: Find a place" command for the Maps app. This class requires the following
properties (with NO mutators, However, accessors are allowed) and methods:
1 private String destination
public FindPlace(Scanner scanner)
• Constructs this FindPlace instance accordingly using the Scanner.
- public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this FindPlace command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
• PlanRoute implements Command
o Write a fully-documented class named PlanRoute to represent the "P: Plan a route" command for the Maps app. This class requires the following
properties (with NO mutators, However, accessors are allowed) and methods:
1 private String source
- private String destination
- public PlanRoute(Scanner scanner)
• Constructs this PlanRoute instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this PlanRoute command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
![o Write a fully-documented class named StartNavigation to represent the "N: Start Navigation" command for the Maps app. This class requires the
following properties (with NO mutators, However, accessors are allowed) and methods:
1 private String source
1 private String destination
public StartNavigation (CommandStack commandStack)
• Constructs this StartNavigation instance accordingly after grabbing navigation information from the last instruction
- public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this StartNavigation command will be valid for the given stack.
• This cannot be placed on top of another StartNavigation command or an empty stack
public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
Safari Commands
• GoogleSomething implements Command
o Write a fully-documented class named GoogleSomething to represent the "G: Google something" command for the Safari app. This class requires
the following properties (with NO mutators, However, accessors are allowed) and methods:
1 private String query
- public GoogleSomething (Scanner scanner)
• Constructs this GoogleSomething instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this GoogleSomething command will be valid for the given stack.
1 public String toString()
• Returns the String representation of this Command in long form (for current screen display)
1 public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
GoToBookmark implements Command
o Write a fully-documented class named GoToBookmark to represent the "F: Go to favorite/bookmark" command for the Safari app. This class requires
the following properties (with NO mutators, However, accessors are allowed) and methods:
private String bookmark
i public GoToBookmark (Scanner scanner)
• Constructs this GoToBookmark instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this GoToBookmark command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
i public String toShortString()](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59bff8cf-42f1-4073-9e02-ab773895c234%2Faddbb5e0-fdc0-44ee-b0c4-4da8bec70c96%2Fi6fp9zo_processed.png&w=3840&q=75)
Transcribed Image Text:o Write a fully-documented class named StartNavigation to represent the "N: Start Navigation" command for the Maps app. This class requires the
following properties (with NO mutators, However, accessors are allowed) and methods:
1 private String source
1 private String destination
public StartNavigation (CommandStack commandStack)
• Constructs this StartNavigation instance accordingly after grabbing navigation information from the last instruction
- public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this StartNavigation command will be valid for the given stack.
• This cannot be placed on top of another StartNavigation command or an empty stack
public String toString()
• Returns the String representation of this Command in long form (for current screen display)
- public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
Safari Commands
• GoogleSomething implements Command
o Write a fully-documented class named GoogleSomething to represent the "G: Google something" command for the Safari app. This class requires
the following properties (with NO mutators, However, accessors are allowed) and methods:
1 private String query
- public GoogleSomething (Scanner scanner)
• Constructs this GoogleSomething instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this GoogleSomething command will be valid for the given stack.
1 public String toString()
• Returns the String representation of this Command in long form (for current screen display)
1 public String toShortString()
• Returns the String representation of this Command in short form (for stack display)
GoToBookmark implements Command
o Write a fully-documented class named GoToBookmark to represent the "F: Go to favorite/bookmark" command for the Safari app. This class requires
the following properties (with NO mutators, However, accessors are allowed) and methods:
private String bookmark
i public GoToBookmark (Scanner scanner)
• Constructs this GoToBookmark instance accordingly after reading input from the scanner.
i public boolean validCommand(CommandStack stack)
• Returns whether or not pushing this GoToBookmark command will be valid for the given stack.
- public String toString()
• Returns the String representation of this Command in long form (for current screen display)
i public String toShortString()
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