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Juli2301 [7.4K]
3 years ago
8

Write a program that calculates payments for loan system. Implement for both client and Server. - The client sends loan informat

ion to the server o annual interest rate o number of years o loan amount - The server computes monthly payment and total payment. - When the user presses the ‘Submit’ key, the server sends them back to the client. - Must use JavaFX - For computation follow the formulas below o monthlyInterestRate = annualInterestRate / 1200; o monthlyPayment = loanAmount * monthlyInterestRate / (1 - 1 / Math.pow(1 + monthlyInterestRate, numberOfYears * 12)); o totalPayment = monthlyPayment * numberOfYears * 12;

Computers and Technology
2 answers:
Ksivusya [100]3 years ago
5 0

Answer:

see explaination

Explanation:

Program code below:

oan.java:

//Define the class.

public class Loan implements java.io.Serializable {

//Define the variables.

private static final long serialVersionUID = 1L;

private double annualInterestRate;

private int numberOfYears;

private double loanAmount;

private java.util.Date loanDate;

//Define the default constructor.

public Loan() {

this(2.5, 1, 1000);

}

//Define the multi argument constructor.

protected Loan(double annualInterestRate, int numberOfYears,

double loanAmount) {

this.annualInterestRate = annualInterestRate;

this.numberOfYears = numberOfYears;

this.loanAmount = loanAmount;

loanDate = new java.util.Date();

}

//Define the getter and setter method.

public double getAnnualInterestRate() {

return annualInterestRate;

}

public void setAnnualInterestRate(double annualInterestRate) {

this.annualInterestRate = annualInterestRate;

}

public int getNumberOfYears() {

return numberOfYears;

}

public void setNumberOfYears(int numberOfYears) {

this.numberOfYears = numberOfYears;

}

public double getLoanAmount() {

return loanAmount;

}

public void setLoanAmount(double loanAmount) {

this.loanAmount = loanAmount;

}

//Define the method to compute the monthly payment.

public double getMonthlyPayment() {

double monthlyInterestRate = annualInterestRate / 1200;

double monthlyPayment = loanAmount * monthlyInterestRate / (1 -

(Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12)));

return monthlyPayment;

}

//Define the method to get the total payment.

public double getTotalPayment() {

double totalPayment = getMonthlyPayment() * numberOfYears * 12;

return totalPayment;

}

public java.util.Date getLoanDate() {

return loanDate;

}

}

ClientLoan.java:

package application;

//Import the required packages.

import java.util.Date;

import java.util.TimeZone;

import javafx.application.Application;

import static javafx.application.Application.launch;

import javafx.scene.Scene;

import javafx.scene.control.Button;

import javafx.scene.control.Label;

import javafx.scene.control.TextArea;

import javafx.scene.control.TextField;

import javafx.scene.layout.GridPane;

import javafx.scene.layout.VBox;

import javafx.stage.Stage;

//Define the client class.

public class ClientLoan extends Application {

//Create the server object.

ServerLoan serverLoan;

//Declare the variables.

int y;

double r, a, mp=0, tp=0;

String result,d1;

//Create the button.

Button b = new Button("Submit");

//Define the method stage.

public void start(Stage primaryStage) throws Exception {

TimeZone.setDefault(TimeZone.getTimeZone("EST"));

TimeZone.getDefault();

d1 = "Server Started at " +new Date();

//Create the GUI.

Label l1=new Label("Annual Interest Rate");

Label l2 = new Label("Number Of Years:");

Label l3 = new Label("Loan Amount");

TextField t1=new TextField();

TextField t2=new TextField();

TextField t3=new TextField();

TextArea ta = new TextArea();

//Add the components in the gridpane.

GridPane root = new GridPane();

root.addRow(0, l1, t1);

root.addRow(1, l2, t2, b);

root.addRow(5,l3, t3);

root.addRow(6, ta);

//Add gridpane and text area to vbox.

VBox vb = new VBox(root, ta);

//Add vbox to the scene.

Scene scene=new Scene(vb,400,250);

//Add button click event.

b.setOnAction(value -> {

//Get the user input from the text field.

r = Double.parseDouble(t1.getText());

y = Integer.parseInt(t2.getText());

a = Double.parseDouble(t3.getText());

//Create the loan class object.

Loan obj = new Loan(r, y, a);

//Call the method to compute the results.

mp = obj.getMonthlyPayment();

tp = obj.getTotalPayment();

//Format the results.

result = "Annual Interest Rate: "+ r+"\n"+

"Number of Years: "+y+"\n"+

"Loan Amount: "+a+"\n"+

"monthlyPayment: "+mp+"\n"+

"totalPayment: "+tp;

//Add the result to the textarea.

ta.setText(result);

//Create an object of the server class.

serverLoan = new ServerLoan(this);

});

//Set the scene to the stage.

//Set the stage title.

//Make the scene visible.

primaryStage.setScene(scene);

primaryStage.setTitle("ClientLoan");

primaryStage.show();

}

//Define the main method lauch the application.

public static void main(String args[])

{

launch(args);

}

//Define the server class.

class ServerLoan extends Stage {

//Create the client loan object.

ClientLoan parent;

//Create the stage object.

Stage subStage;

//Create the text area.

TextArea ta = new TextArea();

//Define the constructor.

private ServerLoan(ClientLoan aThis) {

//Get the time in desired timezone.

TimeZone.setDefault(TimeZone.getTimeZone("EST"));

TimeZone.getDefault();

//Format the date with message.

String d2 = "Connected to client at " +new Date();

//Initialize the object.

parent = aThis;

//Add the date and the result to

//the text area.

ta.setText(d1);

ta.appendText("\n"+ d2);

ta.appendText("\n"+result);

//Create the grouppane.

GridPane root = new GridPane();

//Add text area to the group pane.

root.addRow(0, ta);

//Initialise the stage object.

subStage = new Stage();

//Add gridpane to the scene.

Scene scene = new Scene(root, 400, 200);

//Set the scene to the stage.

//Set the stage title.

//Make the scene visible.

subStage.setScene(scene);

subStage.setTitle("ServerLoan");

subStage.show();

}

}

}

egoroff_w [7]3 years ago
4 0

Answer:

Check the explanation

Explanation:

//Define the class.

public class Loan implements java.io.Serializable {

 

//Define the variables.

private static final long serialVersionUID = 1L;

private double annualInterestRate;

private int numberOfYears;

private double loanAmount;

private java.util.Date loanDate;

//Define the default constructor.

public Loan() {

this(2.5, 1, 1000);

}

//Define the multi argument constructor.

protected Loan(double annualInterestRate, int numberOfYears,

double loanAmount) {

this.annualInterestRate = annualInterestRate;

this.numberOfYears = numberOfYears;

this.loanAmount = loanAmount;

loanDate = new java.util.Date();

}

//Define the getter and setter method.

public double getAnnualInterestRate() {

return annualInterestRate;

}

public void setAnnualInterestRate(double annualInterestRate) {

this.annualInterestRate = annualInterestRate;

}

public int getNumberOfYears() {

return numberOfYears;

}

public void setNumberOfYears(int numberOfYears) {

this.numberOfYears = numberOfYears;

}

public double getLoanAmount() {

return loanAmount;

}

public void setLoanAmount(double loanAmount) {

this.loanAmount = loanAmount;

}

//Define the method to compute the monthly payment.

public double getMonthlyPayment() {

double monthlyInterestRate = annualInterestRate / 1200;

double monthlyPayment = loanAmount * monthlyInterestRate / (1 -

(Math.pow(1 / (1 + monthlyInterestRate), numberOfYears * 12)));

return monthlyPayment;  

}

//Define the method to get the total payment.

public double getTotalPayment() {

double totalPayment = getMonthlyPayment() * numberOfYears * 12;

return totalPayment;  

}

public java.util.Date getLoanDate() {

return loanDate;

}

}

//Define the client class.

public class ClientLoan extends Application {

 

//Create the server object.

ServerLoan serverLoan;

 

//Declare the variables.

int y;

double r, a, mp=0, tp=0;

String result,d1;

 

//Create the button.

Button b = new Button("Submit");

 

//Define the method stage.

public void start(Stage primaryStage) throws Exception {

 

TimeZone.setDefault(TimeZone.getTimeZone("EST"));

TimeZone.getDefault();

d1 = "Server Started at " +new Date();

 

//Create the GUI.

Label l1=new Label("Annual Interest Rate");

Label l2 = new Label("Number Of Years:");

Label l3 = new Label("Loan Amount");

TextField t1=new TextField();

TextField t2=new TextField();

TextField t3=new TextField();

TextArea ta = new TextArea();

 

//Add the components in the gridpane.

GridPane root = new GridPane();

root.addRow(0, l1, t1);

root.addRow(1, l2, t2, b);

root.addRow(5,l3, t3);

root.addRow(6, ta);

 

//Add gridpane and text area to vbox.

VBox vb = new VBox(root, ta);

 

//Add vbox to the scene.

Scene scene=new Scene(vb,400,250);

 

//Add button click event.

b.setOnAction(value -> {

 

//Get the user input from the text field.

r = Double.parseDouble(t1.getText());

y = Integer.parseInt(t2.getText());

a = Double.parseDouble(t3.getText());

 

//Create the loan class object.

Loan obj = new Loan(r, y, a);

 

//Call the method to compute the results.

mp = obj.getMonthlyPayment();

tp = obj.getTotalPayment();

 

//Format the results.

result = "Annual Interest Rate: "+ r+"\n"+

"Number of Years: "+y+"\n"+

"Loan Amount: "+a+"\n"+

"monthlyPayment: "+mp+"\n"+

"totalPayment: "+tp;

 

//Add the result to the textarea.

ta.setText(result);

 

//Create an object of the server class.

serverLoan = new ServerLoan(this);

});

 

//Set the scene to the stage.

//Set the stage title.

//Make the scene visible.

primaryStage.setScene(scene);

primaryStage.setTitle("ClientLoan");

primaryStage.show();

}

 

//Define the main method lauch the application.

public static void main(String args[])

{  

launch(args);

}

 

//Define the server class.

class ServerLoan extends Stage {

 

//Create the client loan object.

ClientLoan parent;

 

//Create the stage object.

Stage subStage;

 

//Create the text area.

TextArea ta = new TextArea();

 

//Define the constructor.

private ServerLoan(ClientLoan aThis) {

 

//Get the time in desired timezone.

TimeZone.setDefault(TimeZone.getTimeZone("EST"));

TimeZone.getDefault();

 

//Format the date with message.

String d2 = "Connected to client at " +new Date();

 

//Initialize the object.

parent = aThis;

 

//Add the date and the result to

//the text area.

ta.setText(d1);

ta.appendText("\n"+ d2);

ta.appendText("\n"+result);

 

//Create the grouppane.

GridPane root = new GridPane();

 

//Add text area to the group pane.

root.addRow(0, ta);

 

//Initialise the stage object.

subStage = new Stage();

 

//Add gridpane to the scene.

Scene scene = new Scene(root, 400, 200);

 

//Set the scene to the stage.

//Set the stage title.

//Make the scene visible.

subStage.setScene(scene);

subStage.setTitle("ServerLoan");

subStage.show();

}

}

}

Kindly check the Output in the attached image below.

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