java单机考试系统练习

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1、package考试系统；importjava.awt.BorderLayout;importjava.awt.GridLayout;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.awt.event.WindowEvent;importjava.awt.event.WindowListener;importjava.io.BufferedReader;importjava.io.File;importjava.io.FileNotFou

2、ndException;importjava.io.FileReader;importjava.io.IOException;importjava.io.Reader;importjava.util.ArrayList;importjava.util.HashMap;importjavci.util.Iterator;importjava.util.Set;importjavax.swing.ButtonGroup;importjavax.swing.JButton;importjavcix.swing.JComboBox;importjavax

3、.swing.JFrame;importjavax.swing.JOptionPane;importjavax.swing.JPanel;importjavax.swing.JRadioButton;importjavax.swing.JTextArea;importjavax.swing.JTextField;publicclassStart1extendsThreadimplementsActionListener,Runnable,WindowListener{JFramejf=newJFrame（n考试系统n）;JButtonjl=new

4、JButton（n倒计时"）；staticJTextFieldj3=newJTextField（"倒■时"）；JComboBoxj7=newJComboBox（）;JButtonj2=newJButton（"得分’’）；JTextFieldj4=newJTextField（*•得分.’）；JTextFieldj6=newJTextField（"答案"）；JButtonj5=newJButton（"答案n）;JTextAreaj=newJTextArea（"主界面•'）；Stringstr=Stringstrl=,,H;Stringstr2=,,M

5、;JButtonshang=newJButton（"上—题•’）；JButtonxia=newJButton（•’下一题"）；JButtonjiao=newJButton(n交卷")；Stringintscore=0;intflag=0;Stringl]ti;Readerfileln=null;BufferedReaderbis;Filef;Filep;JRadioButtonna=newJRadioButton(MAH);JRadioButtonnal=newJRadioButton(nB");JRadioButtonna2=newJRadio

6、Button('’C’’);JRadioButtonna3=newJRadioButton(’’Dn);JRadioButtonna4=newJRadioButton();ArrayListar=newAiTayList();HashMapmap=newHashMapO;inti=0;StringsiStrings2=Strings3=,,H;publicStart1()(jf.setSize(800,800);jf.setVisible(true);BorderLayoutbro=newBorderLayout();jf.setLayout(b

7、ro);JPanelofl=newJPanel();ofl.setSize(2,2);ofl.setVisible(true);jf.add(ofl,BorderLayout.NORTH);ofl.add(jl);ofl.add(j3);j7.addltem("请选择试题");j7.addltem(’’i式题一n);j7.addltem("试题二");ofl.add(j7);JPanelof4=newJPanel();of4.setLayout(newGridLayout(3,3));of1•setVisible(true);jf.add(of4

8、，BorderLayout.WEST);of4.add(j2);Of4.add(j4);of4.add(j5);of4.add(j6);