本文實例為大家分享了java swing實現答題系統的具體代碼，供大家參考，具體內容如下
如上圖所示，代碼親測可用，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用來跳轉private int item1 = 0; private int item2 = 1; private int item3 = 2; private int item4 = 3; private JLabel[] FormulaLabels; // 用來存放表達式的各個項private List<String> allResult; // 用來存放隨機出來的結果private JTextField[] userResults; // 用來讓用戶輸入結果private JLabel[] judge; // 用來顯示圖標，以顯示用戶輸入的結果是否正確private List<String> inputResults = null; // 可以不要private JTextField scoreField = null; private int textCount = 1; // 用來記錄當前焦點的位置public static void main(String[] args){ sa s=new sa(); } public sa() { // TODO Auto-generated constructor stub inputResults = new ArrayList<String>(); // 實例化title = new JLabel("題目很簡單，認真答哦！~(每題1分，答對加1分，答錯不扣分！)"); submit = new JButton("提交"); submit.addActionListener(this); GridLayout layout = new GridLayout(21, 6); center = new JPanel(layout); // 調用方法實例化方法initLables(); initUserRestult(); initJudge(); // 將各項填入到center面板(GridLayout) int count = 1; int formulaCount = 0; int userResultsCount = 0; int judgeCount = 0; while (count <= 120) { // 判斷count%6,確定要填哪個組件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("總分：")); scoreField = new JTextField(); scoreField.setEditable(false); center.add(scoreField); center.add(new JLabel()); center.add(new JLabel()); this.add(center, BorderLayout.CENTER); // 添加組件this.add(submit, BorderLayout.SOUTH); this.add(title, BorderLayout.NORTH); // 顯示this.setLocation(400, 10); this.setVisible(true); this.setSize(500, 700); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setTitle("簡單測試系統"); try { Thread.sleep(500); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } userResults[0].requestFocus(); } /** * 這個方法用來初始化算式各項的數組*/ private void initLables() { int sum; int firstNumber; int secondNumber; allResult = new ArrayList<String>(); // 建立算式標籤this.FormulaLabels = new JLabel[80]; // 將數組中的每一個標籤都實例化for (int i = 0; i < 80; i++) { FormulaLabels[i] = new JLabel(); } // 將表達式各項賦值內容，並將隨機數的和算出結果存入Arraylist中,以便後期核對結果使用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()); // } } /** * 這個方法用來實例化userResults數組，並實例化里面的每一個JTextField */ private void initUserRestult() { userResults = new JTextField[20]; for (int i = 0; i < 20; i++) { userResults[i] = new JTextField(); userResults[i].setSize(20, 20); // 後加的監聽userResults[i].addKeyListener(this); } } /** * 這個方法用來實例化judge數組，並將裡面的每一個Label實例化*/ private void initJudge() { judge = new JLabel[20]; for (int i = 0; i < 20; i++) { judge[i] = new JLabel("好好算呦"); } } // 實現監聽方法，當用戶點擊提交後要做的事情@Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub int score = 0; for (int i = 0; i < 20; i++) { // 將用戶輸入的結果全部獲取，存入一個ArrayList中,可以不要inputResults.add(userResults[i].getText().toString().trim()); System.out.println(userResults[i].getText().toString()); // 取出來用戶輸入的答案和之前算好的結果去比較，不對就把後面的標籤設置為回答錯誤， // 如果正確就設置為回答正確String result = userResults[i].getText().toString().trim(); if (result.equals(allResult.get(i))) { judge[i].setText("回答正確"); judge[i].setForeground(Color.RED); score++; } else { judge[i].setText("回答錯誤"); 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 } }更多學習資料請關注專題《管理系統開發》。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。