java四则运算简单界面版

功能要求：该程序实现十道100以内四则运算数学题，能根据题目计算出答案，与输入答案对比，判断做题是否正确，最后计算分数。

界面要求：图形界面实现，基于ArrayList、Vector等高级类。

GUI 界面打算用netbeans实现，再完善相应的代码。

整体源码如下：

package test;import java.util.ArrayList;
import java.util.Random;/**** @author 20633*/
public class test05 extends javax.swing.JFrame {ArrayList<String> namelist = new ArrayList<String> ();ArrayList<String> idlist = new ArrayList<String> ();ArrayList<String> x1list = new ArrayList<String> ();ArrayList<String> x2list = new ArrayList<String> ();ArrayList<String> oplist = new ArrayList<String> ();ArrayList<String> daanlist = new ArrayList<String> ();//    获取随机运算符public static String Op() {String op = "";Random random = new Random();int i = random.nextInt(4);switch (i) {case 0:op = "+";break;case 1:op = "-";break;case 2:op = "×";break;case 3:op = "÷";break;}return op;}//    获取随机数private int Sui() {Random random = new Random();/*0----十以内1-----百以内2-----千以内*/int i = jComboBox1.getSelectedIndex();int x = 0;switch (i) {case 0:x = random.nextInt(11);break;case 1:x = random.nextInt(101);break;case 2:x = random.nextInt(1001);break;default:x = random.nextInt(11);break;}return x;}//    得到正确答案public  String Daan(int x1, int x2, String op) {double daan = 0;if (op.equals("+")) {daan = (double) x1 + x2;} else if (op.equals("-")) {daan = (double) x1 - x2;} else if (op.equals("×")) {daan = (double) x1 * x2;} else {daan = (double) x1 / (double) x2;}return String.format("%.2f", daan);}public test05() {initComponents();}/*** This method is called from within the constructor to initialize the form.* WARNING: Do NOT modify this code. The content of this method is always* regenerated by the Form Editor.*/@SuppressWarnings("unchecked")// <editor-fold defaultstate="collapsed" desc="Generated Code">private void initComponents() {jLabel1 = new javax.swing.JLabel();jLabel2 = new javax.swing.JLabel();namefiled = new javax.swing.JTextField();jLabel3 = new javax.swing.JLabel();idfiled = new javax.swing.JTextField();jLabel4 = new javax.swing.JLabel();jComboBox1 = new javax.swing.JComboBox<>();jLabel5 = new javax.swing.JLabel();dafiled = new javax.swing.JTextField();jButton1 = new javax.swing.JButton();jScrollPane1 = new javax.swing.JScrollPane();area = new javax.swing.JTextArea();shizifiled = new javax.swing.JTextField();jButton2 = new javax.swing.JButton();setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);setBackground(new java.awt.Color(204, 255, 255));jLabel1.setFont(new java.awt.Font("宋体", 1, 36)); // NOI18NjLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);jLabel1.setText("四则运算（测试版）");jLabel1.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);jLabel2.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18NjLabel2.setText(" 姓名：");namefiled.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18Nnamefiled.setToolTipText("");namefiled.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {namefiledActionPerformed(evt);}});jLabel3.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18NjLabel3.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);jLabel3.setText(" 学号：");idfiled.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18Nidfiled.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {idfiledActionPerformed(evt);}});jLabel4.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18NjLabel4.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);jLabel4.setText("难度：");jComboBox1.setFont(new java.awt.Font("宋体", 0, 28)); // NOI18NjComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "十以内", "百以内", "千以内", " " }));jComboBox1.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {jComboBox1ActionPerformed(evt);}});jLabel5.setFont(new java.awt.Font("宋体", 1, 36)); // NOI18NjLabel5.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);jLabel5.setText("＝");dafiled.setFont(new java.awt.Font("宋体", 0, 36)); // NOI18NjButton1.setFont(new java.awt.Font("宋体", 1, 28)); // NOI18NjButton1.setText("提交答案");jButton1.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {jButton1ActionPerformed(evt);}});area.setColumns(20);area.setFont(new java.awt.Font("Monospaced", 0, 36)); // NOI18Narea.setLineWrap(true);area.setRows(5);jScrollPane1.setViewportView(area);shizifiled.setFont(new java.awt.Font("宋体", 0, 36)); // NOI18Nshizifiled.setHorizontalAlignment(javax.swing.JTextField.CENTER);shizifiled.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {shizifiledActionPerformed(evt);}});jButton2.setFont(new java.awt.Font("宋体", 1, 36)); // NOI18NjButton2.setText("开始");jButton2.addActionListener(new java.awt.event.ActionListener() {public void actionPerformed(java.awt.event.ActionEvent evt) {jButton2ActionPerformed(evt);}});javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());getContentPane().setLayout(layout);layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addGroup(layout.createSequentialGroup().addContainerGap().addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false).addComponent(jScrollPane1).addGroup(layout.createSequentialGroup().addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING).addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 130, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 122, javax.swing.GroupLayout.PREFERRED_SIZE)).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addComponent(namefiled, javax.swing.GroupLayout.PREFERRED_SIZE, 195, javax.swing.GroupLayout.PREFERRED_SIZE).addGap(62, 62, 62).addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 114, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addComponent(idfiled, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE)).addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addComponent(shizifiled, javax.swing.GroupLayout.PREFERRED_SIZE, 235, javax.swing.GroupLayout.PREFERRED_SIZE).addGap(9, 9, 9).addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addComponent(dafiled, javax.swing.GroupLayout.PREFERRED_SIZE, 226, javax.swing.GroupLayout.PREFERRED_SIZE))).addGap(80, 80, 80).addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 106, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jButton1).addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 170, javax.swing.GroupLayout.PREFERRED_SIZE)))).addContainerGap(62, Short.MAX_VALUE)));layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false).addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(namefiled, javax.swing.GroupLayout.DEFAULT_SIZE, 62, Short.MAX_VALUE).addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(idfiled).addComponent(jLabel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(jComboBox1)).addGap(60, 60, 60).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false).addComponent(jLabel5).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(dafiled, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE)).addComponent(shizifiled).addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addGap(51, 51, 51).addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 394, javax.swing.GroupLayout.PREFERRED_SIZE).addGap(0, 62, Short.MAX_VALUE)));pack();}// </editor-fold>private void namefiledActionPerformed(java.awt.event.ActionEvent evt) {// TODO add your handling code here:}private void idfiledActionPerformed(java.awt.event.ActionEvent evt) {// TODO add your handling code here:}private void shizifiledActionPerformed(java.awt.event.ActionEvent evt) {// TODO add your handling code here:}private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {// TODO add your handling code here:for(int  i=0;i<10;i++){x1list.add(String.valueOf(Sui()));x2list.add(String.valueOf(Sui()));oplist.add(Op());}for(int i=0;i<10;i++){daanlist.add(Daan(Integer.parseInt(x1list.get(i)),Integer.parseInt(x2list.get(i)),oplist.get(i)));}}private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {// TODO add your handling code here:if(namefiled.getText().equals("")||idfiled.getText().equals("")){shizifiled.setText("请完善信息！");}else{namelist.add(namefiled.getText());idlist.add(idfiled.getText());shizifiled.setText(x1list.get(0)+oplist.get(0)+x2list.get(0));}}int i=1;int j =0;int score = 0;private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {if(i<=9){shizifiled.setText(x1list.get(i)+oplist.get(i)+x2list.get(i));}i+=1;if(Math.abs(Double.parseDouble(dafiled.getText())-Double.parseDouble(daanlist.get(j)))<=0.01){score += 10;}area.append(x1list.get(j)+oplist.get(j)+x2list.get(j)+"="+dafiled.getText()+"  "+"正确答案为："+daanlist.get(j)+"\n");dafiled.setText("");j+=1;if(j==10){area.append("总分为100分，您的得分为："+score);}}public static void main(String args[]) {java.awt.EventQueue.invokeLater(new Runnable() {public void run() {new test05().setVisible(true);}});}// Variables declaration - do not modifyprivate javax.swing.JTextArea area;private javax.swing.JTextField dafiled;private javax.swing.JTextField idfiled;private javax.swing.JButton jButton1;private javax.swing.JButton jButton2;private javax.swing.JComboBox<String> jComboBox1;private javax.swing.JLabel jLabel1;private javax.swing.JLabel jLabel2;private javax.swing.JLabel jLabel3;private javax.swing.JLabel jLabel4;private javax.swing.JLabel jLabel5;private javax.swing.JScrollPane jScrollPane1;private javax.swing.JTextField namefiled;private javax.swing.JTextField shizifiled;// End of variables declaration
}

代码较多，界面部分的代码系自动生成，不必过于关注。这里主要定义了三个方法，分别是获取随机运算符（+，-，*，÷），生成随机数（根据所做的选择来生成相应范围的随机数），获取正确答案。

//获取随机运算符

public static String Op() {String op = "";Random random = new Random();int i = random.nextInt(4);switch (i) {case 0:op = "+";break;case 1:op = "-";break;case 2:op = "×";break;case 3:op = "÷";break;}return op;
}

//生成随机数

public  int Sui() {Random random = new Random();/*0----十以内1-----百以内2-----千以内*/int i = jComboBox1.getSelectedIndex();int x = 0;switch (i) {case 0:x = random.nextInt(11);break;case 1:x = random.nextInt(101);break;case 2:x = random.nextInt(1001);break;default:x = random.nextInt(11);break;}return x;}

//获得正确答案 ---此处保留两位小数

public  String Daan(int x1, int x2, String op) {double daan = 0;if (op.equals("+")) {daan = (double) x1 + x2;} else if (op.equals("-")) {daan = (double) x1 - x2;} else if (op.equals("×")) {daan = (double) x1 * x2;} else {daan = (double) x1 / (double) x2;}return String.format("%.2f", daan);
}

运行界面如下：

填写姓名和学号后，选择难度点击开始就可以出现式子，提交答案后，会对式子进行一个展示

做够十道题后会对分数进行统计，计算出最后得分：

以上代码只是实现了最基础的功能，再复杂一点可以连接数据库，存储每个学生的学号，姓名，所选择的难度及最后的得分。

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