JAVA-container.rar_JAVA Container

import java.util.*; public class BasicContainer { public static void main(String[] args) { Collection c = new HashSet(); c.add("hello"); c.add(new Name("f1","l1")); c.add(new Integer(100)); c.remove("hello"); c.remove(new Integer(100)); System.out.println (c.remove(new Name("f1","l1"))); System.out.println(c); } } class Name implements Comparable { private String firstName,lastName; public Name(String firstName, String lastName) { this.firstName = firstName; this.lastName = lastName; } public String getFirstName() { return firstName; } public String getLastName() { return lastName; } public String toString() { return firstName + " " + lastName; } public boolean equals(Object obj) { if (obj instanceof Name) { Name name = (Name) obj; return (firstName.equals(name.firstName)) && (lastName.equals(name.lastName)); } return super.equals(obj); } public int hashCode() { return firstName.hashCode(); } public int compareTo(Object o) { Name n = (Name)o; int lastCmp = lastName.compareTo(n.lastName); return (lastCmp!=0 ? lastCmp : firstName.compareTo(n.firstName)); } }