package com.mycompany.demo.banregio;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
public class Main {
public static long fechaHoy = 0;
public static double tasaInteres = 7.50;
public static double tasaIVA = 16.00;
private static final DecimalFormat df = new DecimalFormat("0.00");
public static List<Pagos> pagosRealizados = new ArrayList<>();
public static List<CuentasDebito> cuentasPagos = new ArrayList<>();
// Entidad Prestamos
public static class Prestamos {
private String cliente;
private int id;
private Date fecha;
private double monto;
private String estado;
public String getCliente() {
return this.cliente;
}
public void setCliente(String cliente) {
this.cliente = cliente;
}
public int getId() {
return this.id;
}
public void setId(int id) {
this.id = id;
}
public Date getFecha() {
return this.fecha;
}
public void setFecha(Date fecha) {
this.fecha = fecha;
}
public double getMonto() {
return this.monto;
}
public void setMonto(double monto) {
this.monto = monto;
}
public String getEstado() {
return this.estado;
}
public void setEstado(String estado) {
this.estado = estado;
}
public Prestamos(String cliente, int id, Date fecha, double monto, String estado) {
this.cliente = cliente;
this.id = id;
this.fecha = fecha;
this.monto = monto;
this.estado = estado;
}
@Override
public String toString() {
return "Prestamo{" +
"cliente='" + cliente + '\'' +
", fecha=" + fecha +
", monto=" + monto +
", estado=" + estado +
'}';
}
}
// Entidad CuentasDebito
public static class CuentasDebito {
private String cliente;
private double monto;
private String estado;
public String getCliente() {
return this.cliente;
}
public void setCliente(String cliente) {
this.cliente = cliente;
}
public double getMonto() {
return this.monto;
}
public void setMonto(double monto) {
this.monto = monto;
}
public String getEstado() {
return this.estado;
}
public void setEstado(String estado) {
this.estado = estado;
}
public CuentasDebito(String cliente, double monto, String estado) {
this.cliente = cliente;
this.monto = monto;
this.estado = estado;
}
@Override
public String toString() {
return "CuentaDebito{" +
"cliente='" + cliente + '\'' +
", monto=" + monto +
'}';
}
}
// Entidad Pagos
public static class Pagos {
private String cliente;
private double plazo;
private double monto;
private double interes;
private double IVA;
private double montoPago;
public String getCliente() {
return this.cliente;
}
public void setCliente(String cliente) {
this.cliente = cliente;
}
public double getPlazo() {
return this.plazo;
}
public void setPlazo(double plazo) {
this.plazo = plazo;
}
public double getMonto() {
return this.monto;
}
public void setMonto(double monto) {
this.monto = monto;
}
public double getInteres() {
return this.interes;
}
public void setInteres(double interes) {
this.interes = interes;
}
public double getIVA() {
return this.IVA;
}
public void setIVA(double IVA) {
this.IVA = IVA;
}
public double getMontoPagoo() {
return this.montoPago;
}
public void setMontoPago(double montoPago) {
this.montoPago = montoPago;
}
public Pagos(String cliente, double plazo, double monto, double interes, double montoPago) {
this.cliente = cliente;
this.plazo = plazo;
this.monto = monto;
this.interes = interes;
this.montoPago = montoPago;
}
@Override
public String toString() {
return "Pago{" +
"cliente='" + cliente + '\'' +
", plazo=" + plazo +
", monto=" + monto +
", interes=" + interes +
", pago=" + montoPago +
'}';
}
}
// Poblar BD de prestamos
public static List<Prestamos> getPrestamos() {
Prestamos prestamo1 = new Prestamos("00103228", 1, formatterDate("10-ene-21"), 37500.00, "Pendiente");
Prestamos prestamo2 = new Prestamos("00103228", 2, formatterDate("19-ene-21"), 725.18, "Pendiente");
Prestamos prestamo3 = new Prestamos("00103228", 3, formatterDate("31-ene-21"), 1578.22, "Pendiente");
Prestamos prestamo4 = new Prestamos("00103228", 4, formatterDate("04-feb-21"), 380.00, "Pendiente");
Prestamos prestamo5 = new Prestamos("70099925", 1, formatterDate("07-ene-21"), 2175.25, "Pagado");
Prestamos prestamo6 = new Prestamos("70099925", 2, formatterDate("13-ene-21"), 499.99, "Pagado");
Prestamos prestamo7 = new Prestamos("70099925", 3, formatterDate("24-ene-21"), 5725.18, "Pendiente");
Prestamos prestamo8 = new Prestamos("70099925", 4, formatterDate("07-feb-21"), 876.13, "Pendiente");
Prestamos prestamo9 = new Prestamos("00298185", 1, formatterDate("04-feb-21"), 545.55, "Pendiente");
Prestamos prestamo10 = new Prestamos("15000125", 1, formatterDate("31-dic-20"), 15220.00, "Pendiente");
List<Prestamos> prestamos = Arrays.asList(prestamo1, prestamo2, prestamo3, prestamo4, prestamo5, prestamo6,
prestamo7, prestamo8, prestamo9, prestamo10);
return prestamos;
}
// Poblar BD de cuentas débito
public static List<CuentasDebito> getCuentasDebito() {
CuentasDebito cuenta1 = new CuentasDebito("00103228", 15375.28, "Activa");
CuentasDebito cuenta2 = new CuentasDebito("70099925", 3728.51, "Bloqueada");
CuentasDebito cuenta3 = new CuentasDebito("00298185", 0.00, "Cancelada");
CuentasDebito cuenta4 = new CuentasDebito("15000125", 235.28, "Activa");
return Arrays.asList(cuenta1, cuenta2, cuenta3, cuenta4);
}
// Metodo para obtener cuentas acyivas
public static List<CuentasDebito> getCuentasActivas() {
return getCuentasDebito()
.stream()
.filter(cuenta -> cuenta.getEstado().equals("Activa"))
.collect(Collectors.toList());
}
// Metodo para obtener prestamos de una cuenta
public static List<Prestamos> getPrestamosCuenta(String cliente) {
return getPrestamos().stream()
.filter(prestamo -> prestamo.getCliente().equals(cliente))
.sorted(Comparator.comparing(Prestamos::getFecha))
.collect(Collectors.toList());
}
// Se realiza el pago de los prestamos de las cuentas activas
public static void realizarPago() {
List<CuentasDebito> cuentasActivas = getCuentasActivas();
for (CuentasDebito cuenta : cuentasActivas) {
// System.out.println(getPrestamosCuenta(cuenta.getCliente()));
List<Prestamos> prestamosCuenta = getPrestamosCuenta(cuenta.getCliente());
for (Prestamos prestamo : prestamosCuenta) {
// RealizarCobro
realizaCobro(cuenta, prestamo);
}
}
}
// Metodo que realiza el cobro a la cuenta indicada y actualiza el estatus del
// préstamo
public static void realizaCobro(CuentasDebito cuenta, Prestamos prestamo) {
long plazo = calculoPlazo(prestamo);
double tasaInteresPorcentaje = (tasaInteres * 100) / prestamo.getMonto();
double interes = Double.parseDouble(df.format(prestamo.getMonto() * plazo * tasaInteresPorcentaje / 360));
double iva = Double.parseDouble(df.format(interes * tasaIVA));
double cobro = prestamo.getMonto() + interes + iva;
// Se realiza el descuento a la cuenta
if (cobro <= cuenta.getMonto()) {
double monto = cuenta.getMonto() - cobro;
cuenta.setMonto(monto);
// Se actualiza el estado del préstamo
prestamo.setEstado("Pagado");
// Se crea un registro en Pagos
Pagos pago = new Pagos(cuenta.getCliente(), plazo, monto, interes, cobro);
pagosRealizados.add(pago);
cuentasPagos.add(cuenta);
}
}
public static void main(String[] args) throws ParseException {
// getCuentasActivas().forEach(System.out::println);
// List<CuentasDebito> cuentas = getCuentasActivas();
// for (CuentasDebito cuenta : cuentas) {
// System.out.println(getPrestamosCuenta(cuenta.getCliente()));
// }
realizarPago();
System.out.println("Pagos Realizados");
System.out.println(pagosRealizados);
System.out.println("Cuentas de pagos realizados");
System.out.println(cuentasPagos);
}
public static long calculoPlazo(Prestamos prestamo) {
long fechaPrestamoMilli = prestamo.getFecha().getTime();
long timeDiff = Math.abs(getFechaEntrada() - fechaPrestamoMilli);
return TimeUnit.DAYS.convert(timeDiff, TimeUnit.MILLISECONDS);
}
public static long getFechaEntrada() {
Date fechaEntrada;
try {
fechaEntrada = new SimpleDateFormat("dd-MMM-yyyy").parse("15-feb-21");
return fechaEntrada.getTime();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return 0;
}
public static Date formatterDate(String fecha) {
SimpleDateFormat formatter = new SimpleDateFormat("dd-MMM-yyyy");
try {
return formatter.parse(fecha);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
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apply plugin:'application'
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Java is a very popular general-purpose programming language, it is class-based and object-oriented. Java was developed by James Gosling at Sun Microsystems ( later acquired by Oracle) the initial release of Java was in 1995. Java 17 is the latest long-term supported version (LTS). As of today, Java is the world's number one server programming language with a 12 million developer community, 5 million students studying worldwide and it's #1 choice for the cloud development.
short x = 999; // -32768 to 32767
int x = 99999; // -2147483648 to 2147483647
long x = 99999999999L; // -9223372036854775808 to 9223372036854775807
float x = 1.2;
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byte x = 99; // -128 to 127
char x = 'A';
boolean x = true;
When ever you want to perform a set of operations based on a condition If-Else is used.
if(conditional-expression) {
// code
} else {
// code
}
Example:
int i = 10;
if(i % 2 == 0) {
System.out.println("i is even number");
} else {
System.out.println("i is odd number");
}
Switch is an alternative to If-Else-If ladder and to select one among many blocks of code.
switch(<conditional-expression>) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
//code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition. Usually for loop is preferred when number of iterations is known in advance.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(<condition>){
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (<condition>);
Class is the blueprint of an object, which is also referred as user-defined data type with variables and functions. Object is a basic unit in OOP, and is an instance of the class.
class keyword is required to create a class.
class Mobile {
public: // access specifier which specifies that accessibility of class members
string name; // string variable (attribute)
int price; // int variable (attribute)
};
Mobile m1 = new Mobile();
public class Greeting {
static void hello() {
System.out.println("Hello.. Happy learning!");
}
public static void main(String[] args) {
hello();
}
}
Collection is a group of objects which can be represented as a single unit. Collections are introduced to bring a unified common interface to all the objects.
Collection Framework was introduced since JDK 1.2 which is used to represent and manage Collections and it contains:
This framework also defines map interfaces and several classes in addition to Collections.
| Collection | Description |
|---|---|
| Set | Set is a collection of elements which can not contain duplicate values. Set is implemented in HashSets, LinkedHashSets, TreeSet etc |
| List | List is a ordered collection of elements which can have duplicates. Lists are classified into ArrayList, LinkedList, Vectors |
| Queue | FIFO approach, while instantiating Queue interface you can either choose LinkedList or PriorityQueue. |
| Deque | Deque(Double Ended Queue) is used to add or remove elements from both the ends of the Queue(both head and tail) |
| Map | Map contains key-values pairs which don't have any duplicates. Map is implemented in HashMap, TreeMap etc. |