java通讯簿程序
作为学校作业的一部分，我正在写一本通讯录，我基本上已经弄明白了，但有一部分我被卡住了。这是我的代码。我有一个AddressBook类，它包含变量和适当的getter和setter方法，用于更改/返回书中每个人的信息。然后，我有一个TestAddressBook类，它有一个main方法来演示地址簿是如何工作的。唯一让我困惑的是最终的要求，我被要求比较两个名字，看看它们是否相等，然后打印结果。我已经按照我想要的方式设计了程序，但由于某种原因，当我进行比较时，它不会打印比较结果。它根本不打印任何东西。我肯定错过了一些明显的东西。下面是这些类的代码
通讯录
public class AddressBook {
private String firstName;
private String middleName;
private String lastName;
private String homeAddress;
private String homePhone;
private String cellPhone;
private String businessPhone;
private String skypeId;
private String facebookId;
private String personalWebSite;
public AddressBook(String firstName, String middleName, String lastName,
String homeAddress, String homePhone, String cellPhone,
String businessPhone, String skypeID, String facebookID,
String personalWebSite) {
this.firstName = firstName;
this.middleName = middleName;
this.lastName = lastName;
this.homeAddress = homeAddress;
this.homePhone = homePhone;
this.cellPhone = cellPhone;
this.businessPhone = businessPhone;
this.skypeId = skypeID;
this.facebookId = facebookID;
this.personalWebSite = personalWebSite;
}
public AddressBook(String firstName) {
this.firstName = firstName;
}
public AddressBook(String firstName, String middleName) {
this.firstName = firstName;
this.middleName = middleName;
}
public AddressBook(String firstName, String middleName, String lastName) {
this.firstName = firstName;
this.middleName = middleName;
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getMiddleName() {
return middleName;
}
public void setMiddleName(String middleName) {
this.middleName = middleName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getHomeAddress() {
return homeAddress;
}
public void setHomeAddress(String homeAddress) {
this.homeAddress = homeAddress;
}
public String getHomePhone() {
return homePhone;
}
public void setHomePhone(String homePhone) {
this.homePhone = homePhone;
}
public String getCellPhone() {
return cellPhone;
}
public void setCellPhone(String cellPhone) {
this.cellPhone = cellPhone;
}
public String getBusinessPhone() {
return businessPhone;
}
public void setBusinessPhone(String businessPhone) {
this.businessPhone = businessPhone;
}
public String getSkypeId() {
return skypeId;
}
public void setSkypeId(String skypeId) {
this.skypeId = skypeId;
}
public String getFacebookId() {
return facebookId;
}
public void setFacebookId(String facebookId) {
this.facebookId = facebookId;
}
public String getPersonalWebSite() {
return personalWebSite;
}
public void setPersonalWebSite(String personalWebSite) {
this.personalWebSite = personalWebSite;
}
public static String compareNames(String name1, String name2) {
String nameEquals;
if ( name1.equals(name2) ) {
nameEquals = (name1 + " and " + name2 + " are equal names.");
return nameEquals;
}
else {
nameEquals = (name1 + " and " + name2 + " are not equal names.");
return nameEquals;
}
}
}
测试类
public class TestAddressBook {
public static void main(String[] args) {
System.out.println("ENTRY 1");
AddressBook entry1 = new AddressBook("Robert", "James", "Smith", "3 Fake St",
"222-321-8371", "222-423-2382",
"222-438-2918", "bob483", "bobfb493",
"http://www.freewebhost.com/bob848");
System.out.println( "First Name: " + entry1.getFirstName() );
System.out.println( "Middle Name: " + entry1.getMiddleName() );
System.out.println( "Last Name: " + entry1.getLastName() );
System.out.println( "Address: " + entry1.getHomeAddress() );
System.out.println( "Home Phone: " + entry1.getHomePhone() );
System.out.println( "Cell Phone: " + entry1.getCellPhone() );
System.out.println( "Business Phone: " + entry1.getBusinessPhone() );
System.out.println( "Skype ID: " + entry1.getSkypeId() );
System.out.println( "Facebook ID: " + entry1.getFacebookId() );
System.out.println( "Personal Website: " + entry1.getPersonalWebSite() );
System.out.println("\nENTRY 2");
AddressBook entry2 = new AddressBook("Bruce", "Allan", "Carter", "56 Outtamy Way",
"564-342-8372", "564-283-9832",
"564-293-3489", "brucie392", "brucieface28",
"http://www.freewebhost.com/carteristheman");
System.out.println( "First Name: " + entry2.getFirstName() );
System.out.println( "Middle Name: " + entry2.getMiddleName() );
System.out.println( "Last Name: " + entry2.getLastName() );
System.out.println( "Address: " + entry2.getHomeAddress() );
System.out.println( "Home Phone: " + entry2.getHomePhone() );
System.out.println( "Cell Phone: " + entry2.getCellPhone() );
System.out.println( "Business Phone: " + entry2.getBusinessPhone() );
System.out.println( "Skype ID: " + entry2.getSkypeId() );
System.out.println( "Facebook ID: " + entry2.getFacebookId() );
System.out.println( "Personal Website: " + entry2.getPersonalWebSite() );
System.out.println("\nENTRY 3");
AddressBook entry3 = new AddressBook("Susan", "Anne", "Peters", "6 Madeup Blvd",
"736-453-1238", "736-392-2385",
"736-926-2439", "anniep", "susananne",
"http://www.freewebhost.com/Susanspage");
System.out.println( "First Name: " + entry3.getFirstName() );
System.out.println( "Middle Name: " + entry3.getMiddleName() );
System.out.println( "Last Name: " + entry3.getLastName() );
System.out.println( "Address: " + entry3.getHomeAddress() );
System.out.println( "Home Phone: " + entry3.getHomePhone() );
System.out.println( "Cell Phone: " + entry3.getCellPhone() );
System.out.println( "Business Phone: " + entry3.getBusinessPhone() );
System.out.println( "Skype ID: " + entry3.getSkypeId() );
System.out.println( "Facebook ID: " + entry3.getFacebookId() );
System.out.println( "Personal Website: " + entry3.getPersonalWebSite() );
AddressBook.compareNames(entry1.getFirstName() + " " +
entry1.getMiddleName().charAt(0) + " " +
entry1.getLastName(),
entry2.getFirstName() + " " +
entry2.getMiddleName().charAt(0) + " " +
entry2.getLastName() );
}
}
# 1 楼答案
好吧，你看得很好
现在它是相等的，但你必须知道，为了做到这一点，你应该使用
compareTo（）或comparable看看这个
https://www.javacodegeeks.com/2013/03/difference-between-comparator-and-comparable-in-java.html
如果你使用地图会发生什么？如果它依赖于一个键，你会得到重复的值，我的意思是如果你不使用它，你的代码就可以了，但是如果你要使用它，那就看看里面：）