基于java swing实现答题系统

本文实例为大家分享了java swing实现答题系统的具体代码,供大家参考,具体内容如下

如上图所示,代码亲测可用,如下:

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.util.ArrayList;

import java.util.List;

import java.util.Random;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

/**

* 2017-01-09

* @author Koow

*

*/

public class sa extends JFrame implements ActionListener, KeyListener {

private JLabel title = null;

private JButton submit = null;

private JPanel center = null;

// items用来跳转

private int item1 = 0;

private int item2 = 1;

private int item3 = 2;

private int item4 = 3;

private JLabel[] FormulaLabels; // 用来存放表达式的各个项

private List<String> allResult; // 用来存放随机出来的结果

private JTextField[] userResults; // 用来让用户输入结果

private JLabel[] judge; // 用来显示图标,以显示用户输入的结果是否正确

private List<String> inputResults = null; // 可以不要

private JTextField scoreField = null;

private int textCount = 1; // 用来记录当前焦点的位置

public static void main(String[] args){

sa s=new sa();

}

public sa() {

// TODO Auto-generated constructor stub

inputResults = new ArrayList<String>();

// 实例化

title = new JLabel("题目很简单,认真答哦!~(每题1分,答对加1分,答错不扣分!)");

submit = new JButton("提交");

submit.addActionListener(this);

GridLayout layout = new GridLayout(21, 6);

center = new JPanel(layout);

// 调用方法实例化方法

initLables();

initUserRestult();

initJudge();

// 将各项填入到center面板(GridLayout)

int count = 1;

int formulaCount = 0;

int userResultsCount = 0;

int judgeCount = 0;

while (count <= 120) {

// 判断count%6,确定要填哪个组件

if (count % 6 == 1 || count % 6 == 2 || count % 6 == 3 || count % 6 == 4) {

center.add(FormulaLabels[formulaCount]);

formulaCount++;

} else if (count % 6 == 5) {

center.add(userResults[userResultsCount]);

userResultsCount++;

} else if (count % 6 == 0) {

center.add(judge[judgeCount]);

judgeCount++;

}

count++;

}

center.add(new JLabel());

center.add(new JLabel());

center.add(new JLabel("总分:"));

scoreField = new JTextField();

scoreField.setEditable(false);

center.add(scoreField);

center.add(new JLabel());

center.add(new JLabel());

this.add(center, BorderLayout.CENTER);

// 添加组件

this.add(submit, BorderLayout.SOUTH);

this.add(title, BorderLayout.NORTH);

// 显示

this.setLocation(400, 10);

this.setVisible(true);

this.setSize(500, 700);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setTitle("简单测试系统");

try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

userResults[0].requestFocus();

}

/**

* 这个方法用来初始化算式各项的数组

*/

private void initLables() {

int sum;

int firstNumber;

int secondNumber;

allResult = new ArrayList<String>();

// 建立算式标签

this.FormulaLabels = new JLabel[80];

// 将数组中的每一个标签都实例化

for (int i = 0; i < 80; i++) {

FormulaLabels[i] = new JLabel();

}

// 将表达式各项赋值内容,并将随机数的和算出结果存入Arraylist中,以便后期核对结果使用

while (item4 < 80) {

firstNumber = new Random().nextInt(99) + 1;

FormulaLabels[item1].setText(String.valueOf(firstNumber));

FormulaLabels[item2].setText("+");

secondNumber = new Random().nextInt(99) + 1;

FormulaLabels[item3].setText(String.valueOf(secondNumber));

FormulaLabels[item4].setText("=");

sum = firstNumber + secondNumber;

allResult.add(String.valueOf(sum));

item1 += 4;

item2 += 4;

item3 += 4;

item4 += 4;

}

// for(int i=0;i<80;i++){

// System.out.println(FormulaLabels[i].getText());

// }

}

/**

* 这个方法用来实例化userResults数组,并实例化里面的每一个JTextField

*/

private void initUserRestult() {

userResults = new JTextField[20];

for (int i = 0; i < 20; i++) {

userResults[i] = new JTextField();

userResults[i].setSize(20, 20);

// 后加的监听

userResults[i].addKeyListener(this);

}

}

/**

* 这个方法用来实例化judge数组,并将里面的每一个Label实例化

*/

private void initJudge() {

judge = new JLabel[20];

for (int i = 0; i < 20; i++) {

judge[i] = new JLabel("好好算呦");

}

}

// 实现监听方法,当用户点击提交后要做的事情

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

int score = 0;

for (int i = 0; i < 20; i++) {

// 将用户输入的结果全部获取,存入一个ArrayList中,可以不要

inputResults.add(userResults[i].getText().toString().trim());

System.out.println(userResults[i].getText().toString());

// 取出来用户输入的答案和之前算好的结果去比较,不对就把后面的标签设置为回答错误,

// 如果正确就设置为回答正确

String result = userResults[i].getText().toString().trim();

if (result.equals(allResult.get(i))) {

judge[i].setText("回答正确");

judge[i].setForeground(Color.RED);

score++;

} else {

judge[i].setText("回答错误");

judge[i].setForeground(Color.GREEN);

}

}

scoreField.setText(String.valueOf(score));

}

@Override

public void keyPressed(KeyEvent e) {

// TODO Auto-generated method stub

if (e.getKeyCode() == KeyEvent.VK_ENTER) {

userResults[textCount].requestFocus();

if (textCount < 19) {

textCount++;

}

}

}

@Override

public void keyTyped(KeyEvent e) {

// TODO Auto-generated method stub

}

@Override

public void keyReleased(KeyEvent e) {

// TODO Auto-generated method stub

}

}

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