bjpjcj.java

采用Eclipse开发的学生成绩管理系统,可以添加班级,人员,数据没有采用数据库,后台采用文本文件的形式存储,可以很方便的改为数据库.

package vi;
import file.*;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JTextArea;
import javax.swing.JRadioButton;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.JButton;
public class Bjpjcj extends JFrame implements ItemListener,ActionListener{

	private JPanel jContentPane = null;
	private JTextField avgc = null;
	private JTextField avgm = null;
	private JTextField avge = null;
	private JTextField avga = null;
	private JTextField sum = null;
	private JLabel mesc = null;
	private JLabel mesm = null;
	private JLabel mese = null;
	private JLabel mesa = null;
	private JLabel mess = null;
	private JLabel mesSelect = null;
	private JRadioButton c1 = null;
	private JRadioButton c2 = null;
	private JRadioButton c3 = null;
	private JRadioButton c4 = null;
	private ButtonGroup bg=null;
	private int cno;
	private JButton back = null;
	/**
	 * This is the default constructor
	 */
	public Bjpjcj() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setContentPane(getJContentPane());
		this.setTitle("班级平均成绩");
		this.setResizable(false);
		this.setBounds(new java.awt.Rectangle(320,270,300,232));
		this.setVisible(true);
		back.addActionListener( this);
		bg=new ButtonGroup();
		c1.addItemListener( this);
		c2.addItemListener( this);
		c3.addItemListener( this);
		c4.addItemListener( this);
		bg.add(c1);
		bg.add(c2);
		bg.add( c3);
		bg.add(c4);
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			mesSelect = new JLabel();
			mesSelect.setBounds(new java.awt.Rectangle(12,12,52,18));
			mesSelect.setText("选择班级");
			mess = new JLabel();
			mess.setBounds(new java.awt.Rectangle(79,133,88,22));
			mess.setText("       总       分      ");
			mesa = new JLabel();
			mesa.setBounds(new java.awt.Rectangle(79,102,88,22));
			mesa.setText("     总   平   均");
			mese = new JLabel();
			mese.setBounds(new java.awt.Rectangle(79,71,88,22));
			mese.setText("  英  语  平  均");
			mesm = new JLabel();
			mesm.setBounds(new java.awt.Rectangle(79,40,88,22));
			mesm.setText("  数  学  平  均");
			mesc = new JLabel();
			mesc.setBounds(new java.awt.Rectangle(79,9,88,22));
			mesc.setText("  语  文  平  均");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(getAvgc(), null);
			jContentPane.add(getAvgm(), null);
			jContentPane.add(getAvge(), null);
			jContentPane.add(getAvga(), null);
			jContentPane.add(getSum(), null);
			jContentPane.add(mesc, null);
			jContentPane.add(mesm, null);
			jContentPane.add(mese, null);
			jContentPane.add(mesa, null);
			jContentPane.add(mess, null);
			jContentPane.add(mesSelect, null);
			jContentPane.add(getC1(), null);
			jContentPane.add(getC2(), null);
			jContentPane.add(getC3(), null);
			jContentPane.add(getC4(), null);
			jContentPane.add(getBack(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes avgc	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getAvgc() {
		if (avgc == null) {
			avgc = new JTextField();
			avgc.setBounds(new java.awt.Rectangle(193,9,88,22));
			avgc.setEditable(false);
		}
		return avgc;
	}

	/**
	 * This method initializes avgm	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getAvgm() {
		if (avgm == null) {
			avgm = new JTextField();
			avgm.setBounds(new java.awt.Rectangle(193,40,88,22));
			avgm.setEditable(false);
		}
		return avgm;
	}

	/**
	 * This method initializes avge	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getAvge() {
		if (avge == null) {
			avge = new JTextField();
			avge.setBounds(new java.awt.Rectangle(193,71,88,22));
			avge.setEditable(false);
		}
		return avge;
	}

	/**
	 * This method initializes avga	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getAvga() {
		if (avga == null) {
			avga = new JTextField();
			avga.setBounds(new java.awt.Rectangle(193,102,88,22));
			avga.setEditable(false);
		}
		return avga;
	}

	/**
	 * This method initializes sum	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getSum() {
		if (sum == null) {
			sum = new JTextField();
			sum.setBounds(new java.awt.Rectangle(193,133,88,22));
			sum.setEditable(false);
		}
		return sum;
	}

	/**
	 * This method initializes c1	
	 * 	
	 * @return javax.swing.JRadioButton	
	 */
	private JRadioButton getC1() {
		if (c1 == null) {
			c1 = new JRadioButton();
			c1.setBounds(new java.awt.Rectangle(12,42,52,18));
			c1.setText("1班");
		}
		return c1;
	}

	/**
	 * This method initializes c2	
	 * 	
	 * @return javax.swing.JRadioButton	
	 */
	private JRadioButton getC2() {
		if (c2 == null) {
			c2 = new JRadioButton();
			c2.setBounds(new java.awt.Rectangle(12,72,52,18));
			c2.setText("2班");
		}
		return c2;
	}

	/**
	 * This method initializes c3	
	 * 	
	 * @return javax.swing.JRadioButton	
	 */
	private JRadioButton getC3() {
		if (c3 == null) {
			c3 = new JRadioButton();
			c3.setBounds(new java.awt.Rectangle(12,102,52,18));
			c3.setText("3班");
		}
		return c3;
	}

	/**
	 * This method initializes c4	
	 * 	
	 * @return javax.swing.JRadioButton	
	 */
	private JRadioButton getC4() {
		if (c4 == null) {
			c4 = new JRadioButton();
			c4.setBounds(new java.awt.Rectangle(12,132,52,18));
			c4.setText("4班");
		}
		return c4;
	}
	public void itemStateChanged(ItemEvent e){
		if(e.getItemSelectable() ==c1)
			cno=1;
		else if(e.getItemSelectable() ==c2)
			cno=2;
		else if(e.getItemSelectable() ==c3)
			cno=3;
		else if(e.getItemSelectable() ==c4)
			cno=4;
	AvgOfClass aoc=new AvgOfClass();
	aoc.avgOfClass( cno);
	avgc.setText( new Float(aoc.getAvgChinese()).toString()  );
	avgm.setText( new Float(aoc.getAvgMath()).toString()  );
	avge.setText( new Float(aoc.getAvgEnglish() ).toString()  );
	avga.setText( new Float(aoc.getAvgSum() ).toString()  );
	sum.setText( new Float(aoc.getSum() ).toString()  );
	}

	/**
	 * This method initializes back	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getBack() {
		if (back == null) {
			back = new JButton();
			back.setBounds(new java.awt.Rectangle(118,168,66,27));
			back.setText("返回");
		}
		return back;
	}
	public void actionPerformed(ActionEvent e){
		if(e.getSource() ==back){
			this.dispose() ;
			Main main=new Main();
		}
	}

}  //  @jve:decl-index=0:visual-constraint="237,2"