Java programming homework

public class HMapDriver { public static void main(String[] args) {

boolean result; HMap<String, String> test; test = new HMap<String, String>(10, 0.75);

/* * String s = null; test.put(s,"value"); test.put("s",null); * System.out.println("Expect 'null':\t" + test.get("s")); * System.out.println("Expect 'true':\t" + test.contains("s")); test =

new * ArrayListMap<String, String>(); */

System.out.println("Expect 'true':\t" + test.isEmpty()); System.out.println("Expect '0':\t" + test.size());

System.out.println("Expect 'null':\t" + test.put("1", "One")); System.out.println("Expect 'false':\t" + test.isEmpty()); System.out.println("Expect '1':\t" + test.size());

System.out.println("Expect 'One':\t" + test.put("1", "One")); System.out.println("Expect 'false':\t" + test.isEmpty()); System.out.println("Expect '1':\t" + test.size());

test.put("2", "Two"); test.put("3", "Three"); test.put("4", "Four"); test.put("5", "Five"); System.out.println("Expect '5':\t" + test.size());

System.out.println("Expect 'Three':\t" + test.put("3", "Three XXX")); System.out.println("Expect 'Three XXX':\t" + test.put("3", "Three")); System.out.println("Expect '5':\t" + test.size());

System.out.println("Expect 'true':\t" + test.contains("5")); System.out.println("Expect 'false':\t" + test.contains("6"));

System.out.println(test);

test.put("d", "d");

System.out.println(test); System.out.println("Expect 'true':\t" + test.contains("d")); System.out.println("Expect 'false':\t" + test.contains("e"));

System.out.println("Expect 'One':\t" + test.get("1")); System.out.println("Expect 'One':\t" + test.get("1")); System.out.println("Expect 'Two':\t" + test.get("2")); System.out.println("Expect 'Three':\t" + test.get("3")); System.out.println("Expect 'Four':\t" + test.get("4")); System.out.println("Expect 'Five':\t" + test.get("5")); System.out.println("Expect 'null':\t" + test.get("6"));

test.put("e", "e");

System.out.println(test);

System.out.println("\nThe Map is:\n"); for (MapEntry<String, String> m : test)

System.out.println(m + "\n");

System.out.println(1); test.put("f", "f"); System.out.println(2); System.out.println(test); System.out.println(3); System.out.println("\nThe Map is:\n"); for (MapEntry<String, String> m : test)

System.out.println(m + "\n"); System.out.println(4);

} }