Question

所以我必须要做一个类项目来制作这个程序，但是我想让它在JFrame中工作，所以它有自己的GUI。以下是我对该计划的看法。

package college.rhys.test;

import java.util.Scanner;

public class trial {    


    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.println("Grade format is ppp,mpp,mmm,dmm,ddd:");         
        System.out.println("Please enter Btec Grade:");
        String Kboard = input.nextLine();

        if(Kboard.equals("ppp")){
            System.out.println("You have 120 UCAS points");             
        } else if(Kboard.equals("mpp")){
            System.out.println("You have 160 UCAS points!");
        } else if(Kboard.equals("mmm")){
            System.out.println("You have 240 UCAS points!");
        } else if(Kboard.equals("dmm")){
            System.out.println("You have 280 UCAS points!");
        } else if(Kboard.equals("ddd")){
            System.out.println("You have 360 UCAS points!");
        } }             
}

Answer 1

从文本框中获取成绩，然后将其存储在字符串变量

中

如果您的String等于定义的字符，请显示带有点的消息框。

首先，你需要一个框架，然后添加文本框，按钮。（你也可以使用面板）

点击按钮，您需要获取文本框值并进行比较。

根据比较结果，显示您的消息框。

Here您可以找到使用带有文本框和按钮的框架的基本教程

Answer 2

这是我最终的结果

公共类Gui扩展了JFrame {

private JTextField gradeanswer;
private JButton ppp, mpp, mmm, dmm, ddd, reset;
private String sanswer;
private double answer = 00;
private JPanel contentpanel;
boolean opchosen = false;

public Gui(){
    super("grade calculator");
    gradeanswer = new JTextField(null, 20);

    ppp = new JButton("ppp");
    mpp = new JButton("mpp");
    mmm = new JButton("mmm");
    dmm = new JButton("dmm");
    ddd = new JButton("ddd");
    reset = new JButton("Reset");

    Dimension dim = new Dimension(75,75);

    ppp.setPreferredSize(dim); mpp.setPreferredSize(dim); mmm.setPreferredSize(dim); dmm.setPreferredSize(dim);
    ddd.setPreferredSize(dim);reset.setPreferredSize(dim);

    grade g = new grade();

    ppp.addActionListener(g); dmm.addActionListener(g);
    mpp.addActionListener(g); ddd.addActionListener(g);
    mmm.addActionListener(g); reset.addActionListener(g);

    contentpanel = new JPanel();
    contentpanel.setBackground(Color.white);
    contentpanel.setLayout(new FlowLayout());

    contentpanel.add(gradeanswer, BorderLayout.NORTH);
    gradeanswer.setEditable(false);

    contentpanel.add(ppp); contentpanel.add(mpp); contentpanel.add(mmm);
    contentpanel.add(dmm); contentpanel.add(ddd); contentpanel.add(reset);

    JLabel label1 = new JLabel("Btec To Ucas Converer");
    contentpanel.add(label1, BorderLayout.SOUTH);
    label1.setPreferredSize(new Dimension(150, 100));


    this.setContentPane(contentpanel);
}

private class grade implements ActionListener{


    public void actionPerformed(ActionEvent Event) {
        JButton src = (JButton) Event.getSource();
        if (src.equals(ppp)){
            if(opchosen == false){
                if (sanswer== null){
                    sanswer = "You have 120 UCAS points!";
                }}}
        if (src.equals(mpp)){
            if(opchosen == false){
                if (sanswer== null){
                    sanswer = "You have 160 UCAS points!";
                }}}
        if (src.equals(mmm)){
            if(opchosen == false){
                if (sanswer== null){
                    sanswer = "You have 240 UCAS points!";
                }}} 
        if (src.equals(dmm)){
            if(opchosen == false){
                if (sanswer== null){
                    sanswer = "You have 280 UCAS points!";
                }}}         
        if (src.equals(ddd)){
            if(opchosen == false){
                if (sanswer== null){
                    sanswer = "You have 360 UCAS points!";
                }}} 
        if (src.equals(reset)){
            if(opchosen == false){
                if (sanswer!= null){
                    gradeanswer.setText("");
                }}} 


        if (opchosen == false){
        gradeanswer.setText(sanswer);
    }
        if (src.equals(reset)){
            if(opchosen == false){
                if (sanswer!= null){
                    gradeanswer.setText("");
                    sanswer = null;
                }}}     




}



}
}

我正在试图弄清楚如何让我的程序在JFrame中工作

2 个答案: