123 lines
3.2 KiB
Java
Executable File
123 lines
3.2 KiB
Java
Executable File
/**
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* Name, address and telephone number details.
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*
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* @author David J. Barnes and Michael Kölling.
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* @version 2016.02.29
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*/
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public class ContactDetails implements Comparable<ContactDetails>
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{
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private String name;
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private String phone;
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private String address;
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/**
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* Set up the contact details. All details are trimmed to remove
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* trailing white space.
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* @param name The name.
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* @param phone The phone number.
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* @param address The address.
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*/
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public ContactDetails(String name, String phone, String address)
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{
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// Use blank strings if any of the arguments is null.
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if(name == null) {
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name = "";
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}
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if(phone == null) {
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phone = "";
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}
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if(address == null) {
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address = "";
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}
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this.name = name.trim();
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this.phone = phone.trim();
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this.address = address.trim();
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}
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/**
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* @return The name.
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*/
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public String getName()
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{
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return name;
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}
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/**
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* @return The telephone number.
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*/
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public String getPhone()
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{
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return phone;
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}
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/**
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* @return The address.
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*/
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public String getAddress()
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{
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return address;
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}
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/**
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* Test for content equality between two objects.
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* @param other The object to compare to this one.
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* @return true if the argument object is a set
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* of contact details with matching attributes.
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*/
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public boolean equals(Object other)
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{
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if(other instanceof ContactDetails) {
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ContactDetails otherDetails = (ContactDetails) other;
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return name.equals(otherDetails.getName()) &&
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phone.equals(otherDetails.getPhone()) &&
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address.equals(otherDetails.getAddress());
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}
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else {
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return false;
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}
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}
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/**
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* Compare these details against another set, for the purpose
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* of sorting. The fields are sorted by name, phone, and address.
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* @param otherDetails The details to be compared against.
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* @return a negative integer if this comes before the parameter,
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* zero if they are equal and a positive integer if this
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* comes after the second.
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*/
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public int compareTo(ContactDetails otherDetails)
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{
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int comparison = name.compareTo(otherDetails.getName());
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if(comparison != 0){
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return comparison;
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}
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comparison = phone.compareTo(otherDetails.getPhone());
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if(comparison != 0){
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return comparison;
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}
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return address.compareTo(otherDetails.getAddress());
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}
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/**
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* @return A multi-line string containing the name, phone, and address.
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*/
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public String toString()
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{
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return name + "\n" + phone + "\n" + address;
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}
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/**
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* Compute a hashcode using the rules to be found in
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* "Effective Java", by Joshua Bloch.
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* @return A hashcode for ContactDetails.
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*/
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public int hashCode()
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{
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int code = 17;
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code = 37 * code + name.hashCode();
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code = 37 * code + phone.hashCode();
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code = 37 * code + address.hashCode();
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return code;
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}
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}
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