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Commit0f71d81

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author
jsquared21
committed
Add Ex31_01
1 parent5940cf1 commit0f71d81

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importjava.io.*;
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importjava.net.*;
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importjavafx.application.Application;
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importjavafx.geometry.Insets;
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importjavafx.geometry.Pos;
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importjavafx.scene.Scene;
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importjavafx.scene.control.Label;
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importjavafx.scene.control.ScrollPane;
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importjavafx.scene.control.TextArea;
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importjavafx.scene.control.TextField;
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importjavafx.scene.control.Button;
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importjavafx.scene.layout.GridPane;
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importjavafx.scene.layout.BorderPane;
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importjavafx.stage.Stage;
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publicclassExercise31_01ClientextendsApplication {
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// IO streams
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DataOutputStreamtoServer =null;
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DataInputStreamfromServer =null;
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// Create text fields for loan information
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privateTextFieldtfAnnualInterestRate =newTextField();
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privateTextFieldtfNumberOfYears =newTextField();
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privateTextFieldtfLoanAmount =newTextField();
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// Create Button for submitting loan information to server
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privateButtonbtSubmit =newButton("Submit");
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@Override// Override the start method in th Application class
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publicvoidstart(StageprimaryStage) {
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BorderPanepane =newBorderPane();
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tfAnnualInterestRate.setAlignment(Pos.BASELINE_RIGHT);
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tfNumberOfYears.setAlignment(Pos.BASELINE_RIGHT);
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tfLoanAmount.setAlignment(Pos.BASELINE_RIGHT);
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GridPanepaneForLoanInfo =newGridPane();
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paneForLoanInfo.add(newLabel("Annual Interest Rate"),0,0);
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paneForLoanInfo.add(tfAnnualInterestRate,1,0);
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paneForLoanInfo.add(newLabel("Number Of Years"),0,1);
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paneForLoanInfo.add(tfNumberOfYears,1,1);
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paneForLoanInfo.add(btSubmit,2,1);
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paneForLoanInfo.add(newLabel("Loan Amount"),0,2);
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paneForLoanInfo.add(tfLoanAmount,1,2);
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// Text area to display contents
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TextAreata =newTextArea();
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pane.setTop(paneForLoanInfo);
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pane.setCenter(newScrollPane(ta));
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// Create a scene and place it in the stage
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Scenescene =newScene(pane,355,200);
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primaryStage.setTitle("Exercise31_01Client");// Set the stage title
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primaryStage.setScene(scene);// Place the scene in the stage
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primaryStage.show();// Display the stage
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btSubmit.setOnAction(e -> {
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try {
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// Get the Annual Interest Rate from the text field
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doubleannualInterestRate =Double.parseDouble(
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tfAnnualInterestRate.getText().trim());
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intnumberOfYears =Integer.parseInt(
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tfNumberOfYears.getText().trim());
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doubleloanAmount =Double.parseDouble(
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tfLoanAmount.getText().trim());
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// Send the loan information to the server
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toServer.writeDouble(annualInterestRate);
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toServer.writeInt(numberOfYears);
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toServer.writeDouble(loanAmount);
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toServer.flush();
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// Get monthly payment and total payment from the server
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DoublemonthlyPayment =fromServer.readDouble();
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DoubletotalPayment =fromServer.readDouble();
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// Display to teat area
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ta.appendText("Annual Interest Rate: " +annualInterestRate +'\n');
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ta.appendText("Number Of Years: " +numberOfYears +'\n');
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ta.appendText("Loan Amount: " +loanAmount +'\n');
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ta.appendText("monthlyPayment: " +monthlyPayment +'\n');
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ta.appendText("totalPayment: " +totalPayment +'\n');
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}
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catch (IOExceptionex) {
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System.err.println(ex);
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}
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});
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try {
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// Create a socket to connect to the server
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Socketsocket =newSocket("localhost",8000);
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// Create an input stream to receive data from the server
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fromServer =newDataInputStream(socket.getInputStream());
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// Create an output stream to send data to the server
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toServer =newDataOutputStream(socket.getOutputStream());
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}
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catch (IOExceptionex) {
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ta.appendText(ex.toString() +'\n');
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}
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}
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}
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importjava.io.*;
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importjava.net.*;
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importjava.util.Date;
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importjavafx.application.Application;
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importjavafx.application.Platform;
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importjavafx.scene.Scene;
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importjavafx.scene.control.ScrollPane;
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importjavafx.scene.control.TextArea;
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importjavafx.stage.Stage;
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publicclassExercise31_01ServerextendsApplication {
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@Override// Override the start method in the Application class
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publicvoidstart(StageprimaryStage) {
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// Text area for displaying contents
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TextAreata =newTextArea();
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// Create a scene and place it in the stage
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Scenescene =newScene(newScrollPane(ta),450,200);
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primaryStage.setTitle("Exercise31_01Server");// Set the stage title
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primaryStage.setScene(scene);// Place the scene in the stage
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primaryStage.show();// Display the stage
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newThread(() -> {
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try {
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// Create a server socket
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ServerSocketserverSocket =newServerSocket(8000);
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Platform.runLater(() ->
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ta.appendText("Exercise31_01Server started at" +newDate() +'\n'));
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// Listen for a connection request
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Socketsocket =serverSocket.accept();
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// Create data input and output streams
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DataInputStreaminputFromClient =newDataInputStream(
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socket.getInputStream());
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DataOutputStreamoutputToClient =newDataOutputStream(
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socket.getOutputStream());
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while (true) {
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DatedateClientConnected =newDate();
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// Receive loan information from the client
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doubleannualInterestRate =inputFromClient.readDouble();
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intnumberOfYears =inputFromClient.readInt();
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doubleloanAmount =inputFromClient.readDouble();
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// Compute monthly payment and total payment
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doublemonthlyInterestRate =annualInterestRate /1200;
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doublemonthlyPayment =loanAmount *monthlyInterestRate / (1
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-1 /Math.pow(1 +monthlyInterestRate,numberOfYears *12));
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doubletotalPayment =monthlyPayment *numberOfYears *12;
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// Send monthly payment and total payment back to the client
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outputToClient.writeDouble(monthlyPayment);
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outputToClient.writeDouble(totalPayment);
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Platform.runLater(() -> {
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ta.appendText("Connected to a client at " +
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dateClientConnected +'\n');
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ta.appendText("Annual Interest Rate: " +
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annualInterestRate +'\n');
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ta.appendText("Number Of Years: " +numberOfYears +'\n');
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ta.appendText("Loan Amount: " +loanAmount +'\n');
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ta.appendText("monthlyPayment: " +monthlyPayment +'\n');
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ta.appendText("totalPayment: " +totalPayment +'\n');
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});
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}
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}
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catch(IOExceptionex) {
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ex.printStackTrace();
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}
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}).start();
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}
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}

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