Here is my assignment:

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Consider the following client class:

import java.util.Collection;

import java.util.Collections;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

public class PresidentsMain {

public static void main(String[] args) {

Map PresidentsOfTheUnitedStates = new HashMap();

PresidentsOfTheUnitedStates.put("George Washington", "Unaffiliated");

PresidentsOfTheUnitedStates.put("John Adams", "Federalist");

PresidentsOfTheUnitedStates.put("Thomas Jefferson", "Democratic-Republican");

PresidentsOfTheUnitedStates.put("James Madison", "Democratic-Republican");

PresidentsOfTheUnitedStates.put("James Monroe", "Democratic-Republican");

PresidentsOfTheUnitedStates.put("John Quincy Adams", "Democratic-Republican");

PresidentsOfTheUnitedStates.put("Andrew Jackson", "Democratic");

PresidentsOfTheUnitedStates.put("Martin Van Buren", "Democratic");

PresidentsOfTheUnitedStates.put("William Henry Harrison", "Whig");

PresidentsOfTheUnitedStates.put("John Tyler", "Whig");

}

}

}

Extend given client class:

• Implement a static method called FilterMapByValue, that takes 2 parameters:
  • Map InMap;
  • String TargetValue;

Method should print out all map elements, for which Value == TargetValue. Test the implementation by filtering PresidentsOfTheUnitedStates map so that only presidents, affiliated with Democratic-Republican party are printed. Note: use the following to iterate over a map:

for (Map.Entry Entry : InMap.entrySet())

• Implement a method PrintValues, that prints all values for a given map (use maps values() function). Test the implementation on PresidentsOfTheUnitedStates map.
• Implement a method PrintKeys, that prints all keys for a given map (use maps keySet() function). Test the implementation on PresidentsOfTheUnitedStates map.

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I got this today and it's due tomorrow. I'm lost in this class and don't understand how to do this :(