asked on
Core Java. Building method that invoke another methods.
Let say there is two classes that make search throught employee database. ( see below )
I perform the test and in order to everything is working I need to invoice static loadDefaultEmployeesList()
However, I don't wanna do this I would like to have opportunity to do something like this : Database.loadDefaultEmploy
Database.loadDefaultEmploy
So what should I change in my code in order that it will be possible to invoke method ( searchByWorkExperience and others ) inside method loadDefaultEmployeesList()
Thx in advance !
I perform the test and in order to everything is working I need to invoice static loadDefaultEmployeesList()
However, I don't wanna do this I would like to have opportunity to do something like this : Database.loadDefaultEmploy
Database.loadDefaultEmploy
So what should I change in my code in order that it will be possible to invoke method ( searchByWorkExperience and others ) inside method loadDefaultEmployeesList()
Thx in advance !
Database.loadDefaultEmployeesList();
System.out.println("TEST I. Information about Employees who works more than 3 years. \nYour test result is : ");
String expectedResult = "[Jack Dorsy Address :USA, CA, San-Franciscostart date ( yyyy/mm ) :2008/11,"
+ " Elon Musk Address :USA, CA, Los_Angelesstart date ( yyyy/mm ) :2013/8, "
+ "Pavel M. Durov Address :Russia, Saint-Petersburgstart date ( yyyy/mm ) :2012/12]";
Assert.assertEquals(expectedResult, Database.searchByWorkExperience(3).toString() );
class Employee { // Class Employee
private String firstName;
private String middleName;
private String familyName;
private String address;
private int yearOfstart;
private int monthOfstart;
// Second constructor ( in case of if middle name's absents )
protected Employee (
String firstName,
String familyName,
// missing middle name of an employee
String address,
int yearOfstart,
int monthOfstart)
{
this.familyName = familyName;
this.firstName = firstName;
this.address = address;
this.yearOfstart = yearOfstart;
this.monthOfstart = monthOfstart;
}
protected Employee (
String firstName,
String middleName,
String familyName,
String address,
int yearOfstart,
int monthOfstart)
{
this(firstName,
familyName,
// missing middle name of an employee
address,
yearOfstart,
monthOfstart) ;
this.middleName = middleName;
}
// The constructor of the class // ends
// Implementation of getters methods // Start
protected String getFirstName() {
return firstName;
}
protected String getMiddleName() {
if (middleName == null) {
return "";
} else {
return middleName;
}
}
protected String getFamilyName() {
return familyName;
}
private String getAddress() {
return address;
}
private int getYearOfStart() {
return yearOfstart;
}
private int getMonthOfStart() {
return monthOfstart;
}
// Implementation of getters methods // ends
// method for calculation of beginning of a career in a company
protected int getYearsOfWork () {
Calendar c = Calendar.getInstance();
if ( (monthOfstart - 1) <= c.get(Calendar.MONTH) ) {
return c.get(Calendar.YEAR) - yearOfstart;
} else {
return c.get(Calendar.YEAR) - yearOfstart - 1;
}
}
protected void printRequestedInformation() {
System.out.printf ( "\nFull name : %s " ,this.getFirstName()) ;
System.out.printf ( "%s " ,this.getMiddleName()) ;
System.out.printf ( "%s " ,this.getFamilyName()) ;
System.out.printf ( "\nAddress : %s" ,this.getAddress()) ;
System.out.printf ( "\nstart date ( yyyy/mm ) : %s" ,this.getYearOfStart()) ;
System.out.printf ( " / %s" ,this.getMonthOfStart()) ;
System.out.println();
}
protected void printFullName() {
System.out.printf ( "\nFull name : %s " ,this.getFirstName()) ;
System.out.printf ( "%s " ,this.getMiddleName()) ;
System.out.printf ( "%s " ,this.getFamilyName()) ;
System.out.println();
}
protected String getFullName() {
return this.getFirstName() + " " + this.getMiddleName() + " " + this.getFamilyName();
}
protected String getRequestedInformation() {
return this.getFullName() + " " + "Address :" + this.getAddress()
+ "start date ( yyyy/mm ) :" + this.getYearOfStart() + "/" +this.getMonthOfStart() ;
}
} // Class Employers // ends
//********** ************************************************************
//********** ************************************************************
//********** ************************************************************
//********** ************************************************************
//********** ************************************************************
//********** ************************************************************
class Database {
private static Employee employee0 = new Employee("Jack", "Dorsy","USA, CA, San-Francisco", 2008, 11); // index 0
private static Employee employee1 = new Employee("Marat", "Obama","USA, DC, Washington", 2016, 11); // index 1
private static Employee employee2 = new Employee("Larry", "Page","USA, CA, San-Francisco", 2015, 10); // index 2
private static Employee employee3 = new Employee("Sergey ","Brin","USA, CA, San-Francisco", 2014, 10); // index 3
private static Employee employee4 = new Employee("Elon", "Musk","USA, CA, Los_Angeles", 2013, 8); // index 4
private static Employee employee5 = new Employee("Pavel","M.", "Durov","Russia, Saint-Petersburg", 2012, 12); // index 5
private static Employee employee6 = new Employee("Dmitriy", "V.", "Medvedev","Russia", 2015, 10); // index 6
private static Employee employee7 = new Employee("Ivan","D.", "Shutko","Russia, Kaliningrad", 2015, 3); // index 7
private static Employee employee8 = new Employee("Dmitriy","Ivanovich", "Mihalenko","Russia, Samara", 2015, 3); // index 8
private static Employee employee9 = new Employee("Barack", "Obama","USA, DC, Washington", 2016, 12); // index 9
private static Employee employee10 = new Employee("Pavel", "Erevanov","Germany, B, Berlin", 2016, 10); // index 10
private static Employee employee11 = new Employee("Kirill ","Prohorov","USA, CA, San-Francisco", 2016, 10); // index 11
private static Employee employee12 = new Employee("Mihail", "Bratko","USA, CA, Los_Angeles", 2016, 8); // index 12
private static Employee employee13 = new Employee("Mihail","M.", "Erevanov","Russia, Saint-Petersburg", 2016, 1); // index 13
private static Employee employee14 = new Employee("Petor", "V.", "Kurganov","Ukrain ,Kiev", 2015, 2); // index 14
private static Employee employee15 = new Employee("Pavel","D.", "Shutko","Russia, Varkuta", 2015, 3); // index 15
private static Employee employee16 = new Employee("Dmitriy","P.", "Mihalenko","Russia, Kurgan", 2015, 3); // index 16
private static Employee employee17 = new Employee("Larry", "Shutko","USA, CA, San-Francisco", 2016, 10); // index 17
private static Employee employee18 = new Employee("Sergey ","Brin","USA, CA, San-Francisco", 2016, 10); // index 18
private static Employee employee19 = new Employee("Pavel", "Musk","USA, CA, Los_Angeles", 2016, 8); // index 19
static private ArrayList<Employee> DatabaseOfEmployers = new ArrayList<>();
protected static void addEmployeeToDataBase(Employee emp){
DatabaseOfEmployers.add(emp);
}
protected static void loadDefaultEmployeesList(){
addEmployeeToDataBase(employee0);
addEmployeeToDataBase(employee1);
addEmployeeToDataBase(employee2);
addEmployeeToDataBase(employee3);
addEmployeeToDataBase(employee4);
addEmployeeToDataBase(employee5);
addEmployeeToDataBase(employee6);
addEmployeeToDataBase(employee7);
addEmployeeToDataBase(employee8);
addEmployeeToDataBase(employee9);
addEmployeeToDataBase(employee10);
addEmployeeToDataBase(employee11);
addEmployeeToDataBase(employee12);
addEmployeeToDataBase(employee13);
addEmployeeToDataBase(employee14);
addEmployeeToDataBase(employee15);
addEmployeeToDataBase(employee16);
addEmployeeToDataBase(employee17);
addEmployeeToDataBase(employee18);
addEmployeeToDataBase(employee19);
}
protected static ArrayList<Employee> getDataBase(){
return DatabaseOfEmployers;
}
protected static void printSearchRequest( int numberOfyears) {
for (Employee item : DatabaseOfEmployers) {
if (item.getYearsOfWork() >= numberOfyears) {
item.printRequestedInformation();
}
}
}
protected static ArrayList<String> searchByWorkExperience( int numberOfyears) {
ArrayList<String> resultsOfsearch = new ArrayList<>();
for (Employee item : DatabaseOfEmployers) {
if (item.getYearsOfWork() >= numberOfyears) {
resultsOfsearch.add(item.getRequestedInformation()) ;
}
}
return resultsOfsearch;
}
protected static void printSearchFullName(String str){
for (Employee item :DatabaseOfEmployers ) {
if (item.getFirstName().toLowerCase().contains(str.toLowerCase()) || item.getFamilyName().toLowerCase().contains(str.toLowerCase()) ||
(item.getMiddleName() != null && item.getMiddleName().toLowerCase().contains(str.toLowerCase()))) {
item.printFullName();
}
}
}
protected static ArrayList<String> searchSubstringOfFullName(String str){
ArrayList<String> resultsOfsearch = new ArrayList<>();
for (Employee item :DatabaseOfEmployers ) {
if (item.getFirstName().toLowerCase().contains(str.toLowerCase()) || item.getFamilyName().toLowerCase().contains(str.toLowerCase()) ||
(item.getMiddleName() != null && item.getMiddleName().toLowerCase().contains(str.toLowerCase()))) {
resultsOfsearch.add(item.getFullName()) ;
}
}
return resultsOfsearch ;
}
}
Java EEJava
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