kaoshi.java

简单的考试系统,自动生成题目,用的电卡片布局管理

package gui01;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class KaoShi implements ActionListener{
	private JFrame frame;
	private Container contentPane;
	private JButton btnExit;
	private JButton btnStart;
	private JButton btnOk;
	private JButton btnAbdant;
	private JLabel lblTime;
	private JLabel lblstr1;
	private JLabel lblfh;
	private JLabel lblstr2;
	private JLabel lblequal;
	private JTextField txtjg;
	/**
	 * 
	 */
	private JLabel lblok;
	private JLabel lblerr;
	private JLabel lblabdant;
	private int time=1800;

	private JButton btnOkp1;
	private JButton btnCancelp1;
	
	private int countOk=0;
	private int countErr=0;
	private int countSkip=0;

	private JButton btnOkp2;
	private boolean hasp1=false;
	
	private Manage manage;

	private Timer t;
	
	
 	public void actionPerformed(ActionEvent e){
 		if (e.getSource()== t){
 			time--;
			lblTime.setText(time/60 +":" + time%60);
			if (time<=0){
				countSkip = 25 - countOk - countErr;
				selectPanel(2);
			}
 		}
		if (e.getSource() == btnStart){
			t.start();

			addQuestion();		
			
			lblequal.setVisible(true);
			txtjg.setVisible(true);
			btnStart.setEnabled(false);
			btnOk.setEnabled(true);
			btnAbdant.setEnabled(true);
		}
		if (e.getSource() ==btnOk || e.getSource()==txtjg){
			int jg;
			try{
				 jg = Integer.parseInt(txtjg.getText().trim());
			}catch(Exception e1){
				txtjg.setText("");
				txtjg.grabFocus();
				return;
			}
			int num1 = Integer.parseInt(lblstr1.getText().trim());
			int num2 = Integer.parseInt(lblstr2.getText().trim());
			String fh = lblfh.getText().trim();
			int jgsum=0;
			if (fh=="+")
				 jgsum = num1 + num2;
			else if (fh == "-")
				 jgsum = num1 - num2;
			else if (fh == "*")
				 jgsum = num1 * num2;
			else if (fh == "/")
				 jgsum = num1 / num2;
			
			if (jgsum == jg)
				countOk++;
			else
				countErr++;
			if ((countOk+countErr+countSkip)>=25)
				selectPanel(2);
			else
				setLabel();
				addQuestion();

		}
		if (e.getSource() == btnAbdant){
			countSkip++;
			if ((countOk+countErr+countSkip)>=25)
				selectPanel(2);
			else
				setLabel();
				addQuestion();
		}
		if (e.getSource() == btnExit){
			if (hasp1){
				CardLayout c = (CardLayout)contentPane.getLayout();
				c.show(contentPane,"p1");
			}
			else{
				hasp1=true;
				selectPanel(1);
			}
		}
		if (e.getSource() == btnOkp1)
			System.exit(0);
		if(e.getSource() == btnCancelp1){
			CardLayout c = (CardLayout)contentPane.getLayout();
			c.show(contentPane,"p0");
			
		}
		if(e.getSource() == btnOkp2)
			System.exit(0);
		
	}
	public void setLabel(){
		lblok.setText("答对了"+countOk);
		lblerr.setText("答错了"+countErr);
		lblabdant.setText("放弃了"+countSkip);
	}
	public void addQuestion(){
		String[] fh={"+","-","*","/"};
		int intfh = (int)(Math.random()*4);
		String strfh =fh[intfh];
		lblfh.setText(strfh);
		
		int num1 =(int)(Math.random()*100)+1;
		int num2 =(int)(Math.random()*100)+1;
		if (intfh==3)
			num1=num1*num2;
		lblstr1.setText(num1+"");
		lblstr2.setText(num2+"");
		txtjg.setText("");
		
	
			
	}
	public KaoShi(){
		manage = Login.m;
		frame = new JFrame("kaoshi");
		frame.setBounds(350,250,330,170);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setResizable(false);
		contentPane = frame.getContentPane();
		
		initGUI();
	}
	
	public void initGUI(){
		contentPane.setLayout(new CardLayout());
		selectPanel(0);
	}
	public void selectPanel(int id){
		CardLayout c = (CardLayout)contentPane.getLayout();
		contentPane.add("p"+id,getPanel(id));
		c.next(contentPane);
		//c.addLayoutComponent(getPanel(id), "p"+id);
		//c.show(contentPane, "p"+id);
		
	
		//System.out.println(contentPane.countComponents());
	}

	public JPanel getPanel(int id){
		JPanel pAll = null;
		JPanel p,p1,p2,p3,p4;
		switch (id) {
		
			case 0:
				pAll = new JPanel(new BorderLayout());
				
									
				p1 = new JPanel(new FlowLayout(FlowLayout.RIGHT));
				btnStart = new JButton("start");
				btnOk = new JButton("ok");
				btnOk.setEnabled(false);
				btnAbdant = new JButton("Abdant");
				btnAbdant.setEnabled(false);
				btnExit = new JButton("Exit");
				p1.add(btnStart);
				p1.add(btnOk);
				p1.add(btnAbdant);
				p1.add(btnExit);
				pAll.add(p1,BorderLayout.SOUTH);

				p2 = new JPanel(new GridLayout(3,1,0,0));
				p3 = new JPanel(new FlowLayout(FlowLayout.CENTER));
				lblstr1 = new JLabel();
				lblfh = new JLabel();
				lblstr2 = new JLabel();
				lblequal = new JLabel("=");
				lblequal.setVisible(false);
				txtjg = new JTextField(10);
				txtjg.setVisible(false);
				p3.add(lblstr1);
				p3.add(lblfh);
				p3.add(lblstr2);
				p3.add(lblequal);
				
				p3.add(txtjg);	
				
				lblTime = new JLabel(time/60 +":" + time%60);
				p3.add(lblTime);
				
				pAll.add(p3,BorderLayout.NORTH);				
				
		
				lblok = new JLabel("答对了");
				lblerr = new JLabel("答错了");
				lblabdant = new JLabel("放弃了");
				p2.add(lblok);
				p2.add(lblerr);
				p2.add(lblabdant);
				pAll.add(p2,BorderLayout.CENTER);
				btnStart.addActionListener(this);
				btnOk.addActionListener(this);
				btnAbdant.addActionListener(this);
				btnExit.addActionListener(this);
				txtjg.addActionListener(this);
				t = new Timer(1000,this);
				
				break;
			case 1:
				pAll = new JPanel(new BorderLayout());
				p1 = new JPanel(new FlowLayout());
				p1.add(new JLabel("Are you sure to exit? Your cent will be Zero"));
				pAll.add(p1,BorderLayout.CENTER);
				btnOkp1 = new JButton("ok");
				btnCancelp1 = new JButton("Cancel");
				p2 = new JPanel(new FlowLayout());
				p2.add(btnOkp1);
				p2.add(btnCancelp1);
				pAll.add(p2,BorderLayout.SOUTH);
				btnOkp1.addActionListener(this);
				btnCancelp1.addActionListener(this);
				break;
			case 2:
				pAll = new JPanel(new GridLayout(4,1));
				p1 = new JPanel(new FlowLayout());
				p1.add(new JLabel("答对"+countOk+"题,获得"+countOk*4+"分"));
				p2 = new JPanel(new FlowLayout());
				p2.add(new JLabel("答错"+countErr+"题"));
				p3 = new JPanel(new FlowLayout());
				p3.add(new JLabel("放弃"+countSkip+"题"));
				pAll.add(p1);
				pAll.add(p2);
				pAll.add(p3);
				btnOkp2 = new JButton("ok"); 
				p4 = new JPanel(new FlowLayout());
				p4.add(btnOkp2);
				pAll.add(p4);
				btnOkp2.addActionListener(this);
		}
		return pAll;
	}
	public void go(){
		frame.setVisible(true);
	
	}

	public static void main(String[] args){
		(new KaoShi()).go();


	}
	
	
}