如何將所有輸入顯示在一個JOptionPane中，而不是一次顯示一個窗口？

Question

下面是我的代碼。 我對Java和編程非常陌生，這是我上課的第二天，當我運行它時，我最終只能一次打開一個對話框，而不能輸入所有數據並擁有全部顯示在對話框中。 任何幫助將不勝感激！ 期待了解有關編程的更多信息，並希望有一天能幫助其他人。

import java.util.Scanner;
import javax.swing.JOptionPane;


public class EchoProgram {
    public static void main(String[] args) {
        byte byteValue;
        short svalue;
        int ivalue;
        long lvalue;
        float fvalue;
        double dvalue;
        char charValue;
        boolean booleanvalue;


        Scanner keyboard= new Scanner(System.in);
        System.out.println("Enter a byte value (-128 through 127)");
        byteValue = keyboard.nextByte();
        JOptionPane.showMessageDialog(null, "You have entered " + byteValue);

        System.out.println("Enter a short value (-32,768 through 32,767)");
        svalue = keyboard.nextShort();
        JOptionPane.showMessageDialog(null, "You have entered " + svalue);

        System.out.println("Enter a int value (-2,147,483,648 through 2,147,483,647)");
        ivalue = keyboard.nextInt();
        JOptionPane.showMessageDialog(null, "You have entered " + ivalue);

        System.out.println("Enter a long value (-9,223,372,036,854,775,808 through 9,223,372,036,854,775,807)");
        lvalue = keyboard.nextLong();
        JOptionPane.showMessageDialog(null, "You have entered " + lvalue);

        System.out.println("Enter a float value (number with decimals)");
        fvalue = keyboard.nextFloat();
        JOptionPane.showMessageDialog(null, "You have entered " + fvalue);

        System.out.println("Enter a double value (number with decimals)");
        dvalue = keyboard.nextDouble();
        JOptionPane.showMessageDialog(null, "You have entered " + dvalue);

        System.out.println("Enter a char value (a through z)");
        charValue = keyboard.next().charAt(0);
        JOptionPane.showMessageDialog(null, "You have entered " + charValue);

        System.out.println("Enter a boolean value (true or false)");
        booleanvalue = keyboard.nextBoolean();
        JOptionPane.showMessageDialog(null, "You have entered " + booleanvalue);
        keyboard.close();
    }
}

Answer 1

有點晚了，但是在這里：

import java.awt.GridLayout;
import java.util.Scanner;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;


public class EchoProgram {
    public static void main(String[] args) {
        Byte byteValue;
        Short svalue;
        int ivalue;
        long lvalue;
        float fvalue;
        double dvalue;
        char charValue;
        boolean booleanvalue;

        JTextField answer1 = new JTextField();
        JTextField answer2 = new JTextField();
        JTextField answer3 = new JTextField();
        JTextField answer4 = new JTextField();
        JTextField answer5 = new JTextField();
        JTextField answer6 = new JTextField();
        JTextField answer7 = new JTextField();
        JTextField answer8 = new JTextField();

        JLabel jLabel1 = new JLabel("Enter a byte value (-128 through 127)");
        JLabel jLabel2 = new JLabel("Enter a short value (-32,768 through 32,767)");
        JLabel jLabel3 = new JLabel("Enter a int value (-2,147,483,648 through 2,147,483,647)");
        JLabel jLabel4 = new JLabel("Enter a long value (-9,223,372,036,854,775,808     through 9,223,372,036,854,775,807)");
        JLabel jLabel5 = new JLabel("Enter a float value (number with decimals)");
        JLabel jLabel6 = new JLabel("Enter a double value (number with decimals)");
        JLabel jLabel7 = new JLabel("Enter a char value (a through z)");
        JLabel jLabel8 = new JLabel("Enter a boolean value (true or false)");

        JPanel jPanel = new JPanel();
        jPanel.setLayout(new GridLayout(8, 2));

        Scanner keyboard= new Scanner(System.in);
        System.out.println("Enter a byte value (-128 through 127)");
        byteValue = keyboard.nextByte();


        System.out.println("Enter a short value (-32,768 through 32,767)");
        svalue = keyboard.nextShort();


        System.out.println("Enter a int value (-2,147,483,648 through 2,147,483,647)");
        ivalue = keyboard.nextInt();


        System.out.println("Enter a long value (-9,223,372,036,854,775,808 through 9,223,372,036,854,775,807)");
        lvalue = keyboard.nextLong();


        System.out.println("Enter a float value (number with decimals)");
        fvalue = keyboard.nextFloat();


        System.out.println("Enter a double value (number with decimals)");
        dvalue = keyboard.nextDouble();


        System.out.println("Enter a char value (a through z)");
        charValue = keyboard.next().charAt(0);


        System.out.println("Enter a boolean value (true or false)");
        booleanvalue = keyboard.nextBoolean();

        jPanel.add(jLabel1);
        answer1.setText(byteValue.toString());
        jPanel.add(answer1);

        jPanel.add(jLabel2);
        answer2.setText(svalue.toString());
        jPanel.add(answer2);

        jPanel.add(jLabel3);
        answer3.setText(String.valueOf(ivalue));
        jPanel.add(answer3);

        jPanel.add(jLabel4);
        answer4.setText(String.valueOf(lvalue));
        jPanel.add(answer4);

        jPanel.add(jLabel5);
        answer5.setText(String.valueOf(fvalue));
        jPanel.add(answer5);

        jPanel.add(jLabel6);
        answer6.setText(String.valueOf(dvalue));
        jPanel.add(answer6);

        jPanel.add(jLabel7);
        answer7.setText(charValue + "");
        jPanel.add(answer7);

        jPanel.add(jLabel8);
        answer8.setText(booleanvalue + "");
        jPanel.add(answer8);

        jPanel.setVisible(true);

        JOptionPane.showMessageDialog(null,jPanel,"Information",JOptionPane.INFORMATION_MESSAGE);

        keyboard.close();
    }
}