锐客网

  1. 首页 > 睿知 > it技术 > >

没有数据库的Java Swing中的在线考试项目

javaIT知识

【没有数据库的Java Swing中的在线考试项目】在此项目中, 有10个问题要玩。用户可以在结果时将任何问题加为书签以供重新考虑。
我们在这里使用java数组存储问题, 选项和答案, 而不是数据库。你可以使用收集框架或数据库代替数组。

/*Online Java Paper Test*/import java.awt.*; import java.awt.event.*; import javax.swing.*; class OnlineTest extends JFrame implements ActionListener { JLabel l; JRadioButton jb[]=new JRadioButton[5]; JButton b1, b2; ButtonGroup bg; int count=0, current=0, x=1, y=1, now=0; int m[]=new int[10]; OnlineTest(String s) { super(s); l=new JLabel(); add(l); bg=new ButtonGroup(); for(int i=0; i< 5; i++) { jb[i]=new JRadioButton(); add(jb[i]); bg.add(jb[i]); } b1=new JButton("Next"); b2=new JButton("Bookmark"); b1.addActionListener(this); b2.addActionListener(this); add(b1); add(b2); set(); l.setBounds(30, 40, 450, 20); jb[0].setBounds(50, 80, 100, 20); jb[1].setBounds(50, 110, 100, 20); jb[2].setBounds(50, 140, 100, 20); jb[3].setBounds(50, 170, 100, 20); b1.setBounds(100, 240, 100, 30); b2.setBounds(270, 240, 100, 30); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(null); setLocation(250, 100); setVisible(true); setSize(600, 350); } public void actionPerformed(ActionEvent e) { if(e.getSource()==b1) { if(check()) count=count+1; current++; set(); if(current==9) { b1.setEnabled(false); b2.setText("Result"); } } if(e.getActionCommand().equals("Bookmark")) { JButton bk=new JButton("Bookmark"+x); bk.setBounds(480, 20+30*x, 100, 30); add(bk); bk.addActionListener(this); m[x]=current; x++; current++; set(); if(current==9) b2.setText("Result"); setVisible(false); setVisible(true); } for(int i=0, y=1; i< x; i++, y++) { if(e.getActionCommand().equals("Bookmark"+y)) { if(check()) count=count+1; now=current; current=m[y]; set(); ((JButton)e.getSource()).setEnabled(false); current=now; } } if(e.getActionCommand().equals("Result")) { if(check()) count=count+1; current++; //System.out.println("correct ans="+count); JOptionPane.showMessageDialog(this, "correct ans="+count); System.exit(0); } } void set() { jb[4].setSelected(true); if(current==0) { l.setText("Que1: Which one among these is not a primitive datatype?"); jb[0].setText("int"); jb[1].setText("Float"); jb[2].setText("boolean"); jb[3].setText("char"); } if(current==1) { l.setText("Que2: Which class is available to all the class automatically?"); jb[0].setText("Swing"); jb[1].setText("Applet"); jb[2].setText("Object"); jb[3].setText("ActionEvent"); } if(current==2) { l.setText("Que3: Which package is directly available to our class without importing it?"); jb[0].setText("swing"); jb[1].setText("applet"); jb[2].setText("net"); jb[3].setText("lang"); } if(current==3) { l.setText("Que4: String class is defined in which package?"); jb[0].setText("lang"); jb[1].setText("Swing"); jb[2].setText("Applet"); jb[3].setText("awt"); } if(current==4) { l.setText("Que5: Which institute is best for java coaching?"); jb[0].setText("Utek"); jb[1].setText("Aptech"); jb[2].setText("SSS IT"); jb[3].setText("jtek"); } if(current==5) { l.setText("Que6: Which one among these is not a keyword?"); jb[0].setText("class"); jb[1].setText("int"); jb[2].setText("get"); jb[3].setText("if"); } if(current==6) { l.setText("Que7: Which one among these is not a class? "); jb[0].setText("Swing"); jb[1].setText("Actionperformed"); jb[2].setText("ActionEvent"); jb[3].setText("Button"); } if(current==7) { l.setText("Que8: which one among these is not a function of Object class?"); jb[0].setText("toString"); jb[1].setText("finalize"); jb[2].setText("equals"); jb[3].setText("getDocumentBase"); } if(current==8) { l.setText("Que9: which function is not present in Applet class?"); jb[0].setText("init"); jb[1].setText("main"); jb[2].setText("start"); jb[3].setText("destroy"); } if(current==9) { l.setText("Que10: Which one among these is not a valid component?"); jb[0].setText("JButton"); jb[1].setText("JList"); jb[2].setText("JButtonGroup"); jb[3].setText("JTextArea"); } l.setBounds(30, 40, 450, 20); for(int i=0, j=0; i< =90; i+=30, j++) jb[j].setBounds(50, 80+i, 200, 20); } boolean check() { if(current==0) return(jb[1].isSelected()); if(current==1) return(jb[2].isSelected()); if(current==2) return(jb[3].isSelected()); if(current==3) return(jb[0].isSelected()); if(current==4) return(jb[2].isSelected()); if(current==5) return(jb[2].isSelected()); if(current==6) return(jb[1].isSelected()); if(current==7) return(jb[3].isSelected()); if(current==8) return(jb[1].isSelected()); if(current==9) return(jb[2].isSelected()); return false; } public static void main(String s[]) { new OnlineTest("Online Test Of Java"); } }

输出量
没有数据库的Java Swing中的在线考试项目

文章图片
没有数据库的Java Swing中的在线考试项目

文章图片

    推荐阅读


    上一篇：Java中的记事本以及源代码

    下一篇：图片拼图游戏的例子